{"description":"All collections provided by OB_CLOUD","links":[{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json","title":"Root Catalog"},{"rel":"parent","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD","type":"application/json","title":"Provider Collections"},{"rel":"next","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections?cursor=eyJqc29uIjoiW1wiYXF1YSBtb2RpcyBsZXZlbC0yIHJlZ2lvbmFsIG9jZWFuIGNvbG9yIChvYykgLSBuZWFyIHJlYWwtdGltZSAobnJ0KSBkYXRhLCB2ZXJzaW9uIDIwMjIuMFwiLFwiT0JfQ0xPVURcIixcIk1PRElTQV9MMl9PQ19OUlRcIixcIjIwMjIuMFwiLDMzODA3MDg5NzgsNF0iLCJ1bW0iOiJbXCJhcXVhIG1vZGlzIGxldmVsLTIgcmVnaW9uYWwgb2NlYW4gY29sb3IgKG9jKSAtIG5lYXIgcmVhbC10aW1lIChucnQpIGRhdGEsIHZlcnNpb24gMjAyMi4wXCIsXCJPQl9DTE9VRFwiLFwiTU9ESVNBX0wyX09DX05SVFwiLFwiMjAyMi4wXCIsMzM4MDcwODk3OCw0XSJ9","type":"application/geo+json"}],"collections":[{"type":"Collection","id":"OCTS_L1_2","title":"ADEOS-I OCTS Level-1A  Data, version 2","description":"Level 1A (L1A) data are reconstructed, unprocessed instrument data at full resolution, time-referenced, and annotated with ancillary information. This ancillary information can include radiometric and geometric calibration coefficients and georeferencing parameters (e.g., platform ephemeris).","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-1A/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.xml","title":"CMR XML metadata for C3300834679-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834679-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L1_2","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L1_2/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["OCEANS","EARTH SCIENCE","OCEAN OPTICS","SPECTRAL/ENGINEERING","CALIBRATION","PLATFORM CHARACTERISTICS","SPECTRAL ENGINEERING","INFRARED WAVELENGTHS","SENSOR CHARACTERISTICS","VISIBLE WAVELENGTHS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L2_IOP_2022.0","title":"ADEOS-I OCTS Level-2 Regional Inherent Optical Properties (IOP) Data, version 2022.0","description":"The Inherent Optical Properties (IOP) suite provides per-pixel inherent optical properties - quantities that describe how seawater and its constituents absorb and scatter light, independent of illumination or viewing geometry. IOPs are retrieved from spectral Remote Sensing Reflectance (Rrs) using the default configuration of the Generalized Inherent Optical Properties (GIOP) model framework. These products support water-type classification, water-clarity assessment, biogeochemical studies, and forward/adjoint radiative-transfer applications, and they enable more robust cross-sensor comparisons than purely apparent (AOP) products.\n\n Geophysical variables in this suite include:\n  • a — Total absorption coefficient (sum of pure water + phytoplankton + CDOM/detritus, m⁻¹)\n  • bb — Total backscattering coefficient (m⁻¹)\n• l2_flags — Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings).\n• aph_443 — Phytoplankton absorption coefficient at 443 nm (m⁻¹)\n• aph_unc_443 — Uncertainty in absorption due to phytoplankton at 443 nm (m⁻¹)\n• adg_443 — Combined CDOM + non-algal detritus absorption coefficient at 443nm; accompanied by adg_s (spectral slope, units nm⁻¹).\n• adg_unc_443 — Uncertainty in absorption due to gelbstoff and detrital material at 443 nm (m⁻¹).\n• bbp_443 — Particulate backscattering coefficient at 443nm (m⁻¹); include bbp_s (power-law slope, unitless) describing spectral shape.\n• bbp_unc_443 — Uncertainty in particulate backscattering at 443 nm (m⁻¹).\n• rrsdiff — Fractional mean Rrs difference.\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.xml","title":"CMR XML metadata for C3300834690-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834690-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L2_IOP_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L2_IOP_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Absorption","Earth Science","Ocean Optics","Scattering","Gelbstoff","Plankton","Biosphere","Aquatic Ecosystems","Ecosystems","Phytoplankton"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L2_OC_2022.0","title":"ADEOS-I OCTS Level-2 Regional Ocean Color (OC) Data, version 2022.0","description":"The Ocean Color (OC) data suite provides calibrated, atmospherically corrected ocean-optics measurements and derived biogeophysical products. This data suite includes the Apparent Optical Properties (AOP) and provides satellite-derived measures of the interaction between solar radiation and the upper ocean. AOPs are “apparent” because they depend not only on the inherent optical properties (IOPs) of seawater and its constituents but also on the ambient light field. These variables are critical for studying light penetration, primary productivity, and biogeochemical cycling.\n\n Geophysical variables in this suite include:\n  • Kd_490 - Diffuse attenuation coefficient at 490 nm, KD2 algorithm (m⁻¹)\n  • Rrs - Remote sensing reflectance (sr⁻¹)\n  • angstrom - Aerosol Angstrom exponent, 443 to 865 nm\n  • chlor_a - Chlorophyll Concentration, OCI Algorithm (mg m⁻³)\n• l2_flags - Level-2 Processing Flags\n• aot_862 - Aerosol optical thickness at 862 nm\n• par - Photosynthetically Available Radiation, R. Frouin (mol m⁻² day⁻¹)\n• pic - Calcite Concentration, Balch and Gordon (mol m⁻³)\n• poc - Particulate Organic Carbon, D. Stramski, 2007 (443/555 version) (mg m⁻³)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.xml","title":"CMR XML metadata for C3300834711-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834711-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L2_OC_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L2_OC_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Ocean Color","Earth Science","Ocean Optics","Reflectance","Atmosphere","Aerosols","Aerosol Optical Depth/Thickness","Angstrom Exponent","Chlorophyll Concentration","Chlorophyll","Attenuation/Transmission","Organic Carbon","Ocean Chemistry","Inorganic Carbon","Fluorescence","Photosynthetically Active Radiation"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_CHL_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Chlorophyll (CHL) Data, version 2022.0","description":"The Chlorophyll-a data suite provides global, gridded composites of surface chlorophyll-a concentration (a proxy for phytoplankton biomass). CHL supports time-series and climatologies, anomaly detection, ecosystem and fisheries applications, and teaching/training, and pairs well with AVW, PAR, Kd(490), SST, and winds for environmental context. Note: retrievals in optically complex coastal/inland waters may carry higher uncertainty—refer to the mission/algorithm documentation (e.g., OCx/OCI) for details.\n\n Geophysical variables in this suite include:\n  • chlor_a — Chlorophyll-a concentration (mg m⁻³)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.xml","title":"CMR XML metadata for C3300834719-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834719-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_CHL_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_CHL_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Chlorophyll Concentration","Ocean Optics","Oceans","Chlorophyll","Earth Science","EARTH SCIENCE","BIOSPHERE","CHLOROPHYLL","VEGETATION","OCEANS","OCEAN CHEMISTRY","PIGMENTS","WATER QUALITY/WATER CHEMISTRY","CHLOROPHYLL CONCENTRATIONS","TERRESTRIAL HYDROSPHERE","WATER CHARACTERISTICS","AQUATIC ECOSYSTEMS","PHYTOPLANKTON","PLANKTON","ECOSYSTEMS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_KD_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Diffuse Attenuation Coefficient of Downwelling Irradiance (KD) Data, version 2022.0","description":"The KD data suite provides diffuse attenuation coefficient of downwelling irradiance at 490 nm, Kd_490, which quantifies how quickly blue-green light diminishes with depth—an indicator of water clarity and the depth to which sunlight penetrates. Kd_490 is generated from ocean-color reflectance using the KD2 algorithm. Lower values indicate clearer water (deeper light penetration); users commonly apply Kd_490 to estimate euphotic depth, track coastal water quality and turbidity, interpret bloom/light environments, and supply inputs to biogeochemical and ecosystem models. As with all ocean-color products, uncertainties can be larger in optically complex coastal or inland waters; refer to the file metadata and algorithm documentation for quality flags and usage notes.\n\n Geophysical variables in this suite include:\n  • Kd_490 — Diffuse attenuation coefficient of downwelling irradiance at 490 nm, KD2 algorithm (m⁻¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.xml","title":"CMR XML metadata for C3300834737-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834737-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_KD_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_KD_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Earth Science","Oceans","Ocean Optics","Attenuation/Transmission"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_IOP_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Inherent Optical Properties (IOP) Data, version 2022.0","description":"The Inherent Optical Properties (IOP) suite provides per-pixel inherent optical properties - quantities that describe how seawater and its constituents absorb and scatter light, independent of illumination or viewing geometry. IOPs are retrieved from spectral Remote Sensing Reflectance (Rrs) using the default configuration of the Generalized Inherent Optical Properties (GIOP) model framework. These products support water-type classification, water-clarity assessment, biogeochemical studies, and forward/adjoint radiative-transfer applications, and they enable more robust cross-sensor comparisons than purely apparent (AOP) products.\n\n Geophysical variables in this suite include:\n  • a — Total absorption coefficient (sum of pure water + phytoplankton + CDOM/detritus, m⁻¹)\n  • bb — Total backscattering coefficient (m⁻¹)\n\n• aph_443 — Phytoplankton absorption coefficient at 443 nm (m⁻¹)\n• aph_unc_443 — Uncertainty in absorption due to phytoplankton at 443 nm (m⁻¹)\n• adg_443 — Combined CDOM + non-algal detritus absorption coefficient at 443nm; accompanied by adg_s (spectral slope, units nm⁻¹).\n• adg_unc_443 — Uncertainty in absorption due to gelbstoff and detrital material at 443 nm (m⁻¹).\n• bbp_443 — Particulate backscattering coefficient at 443nm (m⁻¹); include bbp_s (power-law slope, unitless) describing spectral shape.\n• bbp_unc_443 — Uncertainty in particulate backscattering at 443 nm (m⁻¹).\n• rrsdiff — Fractional mean Rrs difference.\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.xml","title":"CMR XML metadata for C3300834731-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834731-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_IOP_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_IOP_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Absorption","Earth Science","Ocean Optics","Scattering","Gelbstoff","Plankton","Phytoplankton","Biosphere","Aquatic Ecosystems","Ecosystems"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_PIC_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Particulate Inorganic Carbon (PIC) Data, version 2022.0","description":"The Particulate Inorganic Carbon (PIC) data suite includes product of particulate inorganic carbon (calcite, typically from coccolithophores) from ocean-color reflectance using the Balch & Gordon algorithm. PIC is used to detect and quantify coccolithophore blooms, assess carbonate cycling and optical backscatter, and provide biogeochemical context alongside chlor_a, Kd_490, PAR, and SST. As with all ocean-color retrievals, uncertainties increase in optically complex coastal/inland waters or under high aerosol/glint; users should refer to per-mission algorithm notes and quality flags before analysis.\n \n Geophysical variables in this suite include:\n  • pic — Particulate Inorganic Carbon (Calcite concentration, Balch and Gordon) (mol m⁻³)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.xml","title":"CMR XML metadata for C3300834762-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834762-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_PIC_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_PIC_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Inorganic Carbon","Ocean Chemistry","Earth Science","Oceans","CARBON","OCEAN CHEMISTRY","EARTH SCIENCE","OCEANS","OCEAN OPTICS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_POC_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Particulate Organic Carbon (POC) Data, version 2022.0","description":"The Particulate Organic Carbon (POC) data suite includes product of particulate organic carbon concentration from ocean-color reflectance. POC is widely used to quantify surface carbon stocks, support biogeochemical and export-flux studies, and provide ecological context alongside chlor_a, bbp, Kd_490, and SST. \n Geophysical variables in this suite include:\n  • poc — Particulate Organic Carbon (mg C m⁻³), D. Stramski, 2007 (443/555 version)/ Stramski et al. 2022 for PACE) \n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.xml","title":"CMR XML metadata for C3300834780-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834780-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_POC_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_POC_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Ocean Chemistry","Oceans","Organic Carbon","Earth Science","OCEAN CHEMISTRY","OCEANS","EARTH SCIENCE","CARBON","OCEAN OPTICS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_PAR_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Photosynthetically Available Radiation (PAR) Data, version 2022.0","description":"The Photosynthetically Available Radiation (PAR) data suite provides satellite-based estimates of the downwelling solar radiation in the 400–700 nm range that is available for photosynthesis at the ocean surface. These products quantify the daily or instantaneous amount of usable light energy, expressed in moles of photons m⁻² (commonly noted as “Einstein m⁻²”), and are widely used to estimate marine primary production, interpret phytoplankton bloom dynamics, provide context for optical and biogeochemical measurements,and support ecosystem models and education on light–biology interactions.\n\nGeophysical variables in this suite include:\n ?~@? par ?~@~T Daily photosynthetically available radiation (mol photons m?~A?² d?~A?¹)?~\n\nThe following variables are also included in PACE L2/L3 files:\n ?~@? l2_flags ?~@~T Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings)\n ?~@? ipar ?~@~T Instantaneous photosynthetically available radiation (mol photons m?~A?² s?~A?¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.xml","title":"CMR XML metadata for C3300834749-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834749-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_PAR_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_PAR_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Photosynthetically Active Radiation","Earth Science","Oceans","Ocean Optics"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3b_RRS_2022.0","title":"ADEOS-I OCTS Level-3 Global Binned Remote-Sensing Reflectance (RRS) Data, version 2022.0","description":"The Remote Sensing Reflectance (RRS) suite provides the remote sensing reflectance at wavelength λ (nm)—the ratio of water-leaving radiance to downwelling irradiance just above the surface (units sr⁻¹). Variables are named by their band center (e.g., Rrs_412, Rrs_443). Rrs_λ is the foundational observable used to retrieve products such as chlor_a, Kd_490, IOPs, and to support algorithm development, validation, water-quality, and ecosystem applications. Users should review per-file quality flags (e.g., land, cloud, sun glint, high aerosol) and mission documentation—especially in optically complex coastal/inland waters.\n  \n Geophysical variables in this suite include:\n  • Rrs — Remote sensing reflectance (sr⁻¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3 Binned/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.xml","title":"CMR XML metadata for C3300834794-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834794-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_RRS_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3b_RRS_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Earth Science","Reflectance","Oceans","Ocean Optics"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_CHL_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Chlorophyll (CHL) Data, version 2022.0","description":"The Chlorophyll-a data suite provides global, gridded composites of surface chlorophyll-a concentration (a proxy for phytoplankton biomass). CHL supports time-series and climatologies, anomaly detection, ecosystem and fisheries applications, and teaching/training, and pairs well with AVW, PAR, Kd(490), SST, and winds for environmental context. Note: retrievals in optically complex coastal/inland waters may carry higher uncertainty—refer to the mission/algorithm documentation (e.g., OCx/OCI) for details.\n\n Geophysical variables in this suite include:\n  • chlor_a — Chlorophyll-a concentration (mg m⁻³)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.xml","title":"CMR XML metadata for C3300834809-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834809-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_CHL_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_CHL_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Ocean Optics","Chlorophyll","Earth Science","Chlorophyll Concentration","Oceans","BIOSPHERE","CHLOROPHYLL","EARTH SCIENCE","VEGETATION","OCEAN CHEMISTRY","OCEANS","PIGMENTS","CHLOROPHYLL CONCENTRATIONS","TERRESTRIAL HYDROSPHERE","WATER QUALITY/WATER CHEMISTRY","WATER CHARACTERISTICS","AQUATIC ECOSYSTEMS","PLANKTON","PHYTOPLANKTON","ECOSYSTEMS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_KD_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Diffuse Attenuation Coefficient of Downwelling Irradiance (KD) Data, version 2022.0","description":"The KD data suite provides diffuse attenuation coefficient of downwelling irradiance at 490 nm, Kd_490, which quantifies how quickly blue-green light diminishes with depth—an indicator of water clarity and the depth to which sunlight penetrates. Kd_490 is generated from ocean-color reflectance using the KD2 algorithm. Lower values indicate clearer water (deeper light penetration); users commonly apply Kd_490 to estimate euphotic depth, track coastal water quality and turbidity, interpret bloom/light environments, and supply inputs to biogeochemical and ecosystem models. As with all ocean-color products, uncertainties can be larger in optically complex coastal or inland waters; refer to the file metadata and algorithm documentation for quality flags and usage notes.\n\n Geophysical variables in this suite include:\n  • Kd_490 — Diffuse attenuation coefficient of downwelling irradiance at 490 nm, KD2 algorithm (m⁻¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.xml","title":"CMR XML metadata for C3300834825-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834825-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_KD_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_KD_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Ocean Optics","Earth Science","Oceans","Attenuation/Transmission"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_IOP_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Inherent Optical Properties (IOP) Data, version 2022.0","description":"The Inherent Optical Properties (IOP) suite provides per-pixel inherent optical properties - quantities that describe how seawater and its constituents absorb and scatter light, independent of illumination or viewing geometry. IOPs are retrieved from spectral Remote Sensing Reflectance (Rrs) using the default configuration of the Generalized Inherent Optical Properties (GIOP) model framework. These products support water-type classification, water-clarity assessment, biogeochemical studies, and forward/adjoint radiative-transfer applications, and they enable more robust cross-sensor comparisons than purely apparent (AOP) products.\n\n Geophysical variables in this suite include:\n  • a — Total absorption coefficient (sum of pure water + phytoplankton + CDOM/detritus, m⁻¹)\n  • bb — Total backscattering coefficient (m⁻¹)\n\n• aph_443 — Phytoplankton absorption coefficient at 443 nm (m⁻¹)\n• aph_unc_443 — Uncertainty in absorption due to phytoplankton at 443 nm (m⁻¹)\n• adg_443 — Combined CDOM + non-algal detritus absorption coefficient at 443nm; accompanied by adg_s (spectral slope, units nm⁻¹).\n• adg_unc_443 — Uncertainty in absorption due to gelbstoff and detrital material at 443 nm (m⁻¹).\n• bbp_443 — Particulate backscattering coefficient at 443nm (m⁻¹); include bbp_s (power-law slope, unitless) describing spectral shape.\n• bbp_unc_443 — Uncertainty in particulate backscattering at 443 nm (m⁻¹).\n• rrsdiff — Fractional mean Rrs difference.\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.xml","title":"CMR XML metadata for C3300834819-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834819-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_IOP_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_IOP_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Earth Science","Ocean Optics","Absorption","Oceans","Scattering","Gelbstoff","Ecosystems","Plankton","Biosphere","Phytoplankton","Aquatic Ecosystems"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_PIC_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Particulate Inorganic Carbon (PIC) Data, version 2022.0","description":"The Particulate Inorganic Carbon (PIC) data suite includes product of particulate inorganic carbon (calcite, typically from coccolithophores) from ocean-color reflectance using the Balch & Gordon algorithm. PIC is used to detect and quantify coccolithophore blooms, assess carbonate cycling and optical backscatter, and provide biogeochemical context alongside chlor_a, Kd_490, PAR, and SST. As with all ocean-color retrievals, uncertainties increase in optically complex coastal/inland waters or under high aerosol/glint; users should refer to per-mission algorithm notes and quality flags before analysis.\n \n Geophysical variables in this suite include:\n  • pic — Particulate Inorganic Carbon (Calcite concentration, Balch and Gordon) (mol m⁻³)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.xml","title":"CMR XML metadata for C3300834831-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834831-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_PIC_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_PIC_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Earth Science","Inorganic Carbon","Ocean Chemistry","CARBON","OCEAN CHEMISTRY","EARTH SCIENCE","OCEANS","OCEAN OPTICS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_POC_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Particulate Organic Carbon (POC) Data, version 2022.0","description":"The Particulate Organic Carbon (POC) data suite includes product of particulate organic carbon concentration from ocean-color reflectance. POC is widely used to quantify surface carbon stocks, support biogeochemical and export-flux studies, and provide ecological context alongside chlor_a, bbp, Kd_490, and SST. \n Geophysical variables in this suite include:\n  • poc — Particulate Organic Carbon (mg C m⁻³), D. Stramski, 2007 (443/555 version)/ Stramski et al. 2022 for PACE) \n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.xml","title":"CMR XML metadata for C3300834842-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834842-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_POC_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_POC_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Ocean Chemistry","Earth Science","Oceans","Organic Carbon","OCEAN CHEMISTRY","EARTH SCIENCE","OCEANS","CARBON","OCEAN OPTICS"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_PAR_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Photosynthetically Available Radiation (PAR) Data, version 2022.0","description":"The Photosynthetically Available Radiation (PAR) data suite provides satellite-based estimates of the downwelling solar radiation in the 400–700 nm range that is available for photosynthesis at the ocean surface. These products quantify the daily or instantaneous amount of usable light energy, expressed in moles of photons m⁻² (commonly noted as “Einstein m⁻²”), and are widely used to estimate marine primary production, interpret phytoplankton bloom dynamics, provide context for optical and biogeochemical measurements,and support ecosystem models and education on light–biology interactions.\n\nGeophysical variables in this suite include:\n ?~@? par ?~@~T Daily photosynthetically available radiation (mol photons m?~A?² d?~A?¹)?~\n\nThe following variables are also included in PACE L2/L3 files:\n ?~@? l2_flags ?~@~T Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings)\n ?~@? ipar ?~@~T Instantaneous photosynthetically available radiation (mol photons m?~A?² s?~A?¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.xml","title":"CMR XML metadata for C3300834829-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834829-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_PAR_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_PAR_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Earth Science","Ocean Optics","Photosynthetically Active Radiation"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"OCTS_L3m_RRS_2022.0","title":"ADEOS-I OCTS Level-3 Global Mapped Remote-Sensing Reflectance (RRS) Data, version 2022.0","description":"The Remote Sensing Reflectance (RRS) suite provides the remote sensing reflectance at wavelength λ (nm)—the ratio of water-leaving radiance to downwelling irradiance just above the surface (units sr⁻¹). Variables are named by their band center (e.g., Rrs_412, Rrs_443). Rrs_λ is the foundational observable used to retrieve products such as chlor_a, Kd_490, IOPs, and to support algorithm development, validation, water-quality, and ecosystem applications. Users should review per-file quality flags (e.g., land, cloud, sun glint, high aerosol) and mission documentation—especially in optically complex coastal/inland waters.\n  \n Geophysical variables in this suite include:\n  • Rrs — Remote sensing reflectance (sr⁻¹)\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["1996-10-31T00:00:00.000Z","1997-06-30T23:59:59.000Z"]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/OCTS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.xml","title":"CMR XML metadata for C3300834849-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3300834849-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_RRS_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/OCTS_L3m_RRS_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Oceans","Reflectance","Earth Science","Ocean Optics"],"summaries":{"platform":["ADEOS-I"],"instruments":["OCTS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"MODISA_L2_IOP_NRT_2022.0","title":"Aqua MODIS Level-2 Regional Inherent Optical Properties (IOP) - Near Real-time (NRT) Data, version 2022.0","description":"The Inherent Optical Properties (IOP) suite provides per-pixel inherent optical properties - quantities that describe how seawater and its constituents absorb and scatter light, independent of illumination or viewing geometry. IOPs are retrieved from spectral Remote Sensing Reflectance (Rrs) using the default configuration of the Generalized Inherent Optical Properties (GIOP) model framework. These products support water-type classification, water-clarity assessment, biogeochemical studies, and forward/adjoint radiative-transfer applications, and they enable more robust cross-sensor comparisons than purely apparent (AOP) products.\n\n Geophysical variables in this suite include:\n  ?~@? a ?~@~T Total absorption coefficient (sum of pure water + phytoplankton + CDOM/detritus, m?~A?¹)\n  ?~@? bb ?~@~T Total backscattering coefficient (m?~A?¹)\n?~@? l2_flags ?~@~T Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings).\n?~@? aph_443 ?~@~T Phytoplankton absorption coefficient at 443 nm (m?~A?¹)\n?~@? aph_unc_443 ?~@~T Uncertainty in absorption due to phytoplankton at 443 nm (m?~A?¹)\n?~@? adg_443 ?~@~T Combined CDOM + non-algal detritus absorption coefficient at 443nm; accompanied by adg_s (spectral slope, units nm?~A?¹).\n?~@? adg_unc_443 ?~@~T Uncertainty in absorption due to gelbstoff and detrital material at 443 nm (m?~A?¹).\n?~@? bbp_443 ?~@~T Particulate backscattering coefficient at 443nm (m?~A?¹); include bbp_s (power-law slope, unitless) describing spectral shape.\n?~@? bbp_unc_443 ?~@~T Uncertainty in particulate backscattering at 443 nm (m?~A?¹).\n?~@? rrsdiff ?~@~T Fractional mean Rrs difference.\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["2002-07-04T00:00:00.000Z",null]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/Aqua-MODIS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.xml","title":"CMR XML metadata for C3380708971-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708971-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/MODISA_L2_IOP_NRT_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/MODISA_L2_IOP_NRT_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Earth Science","Ocean Optics","Oceans","Absorption","Scattering","Gelbstoff","Biosphere","Plankton","Ecosystems","Phytoplankton","Aquatic Ecosystems"],"summaries":{"platform":["Aqua"],"instruments":["MODIS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"MODISA_L2_IOP_2022.0","title":"Aqua MODIS Level-2 Regional Inherent Optical Properties (IOP) Data, version 2022.0","description":"The Inherent Optical Properties (IOP) suite provides per-pixel inherent optical properties - quantities that describe how seawater and its constituents absorb and scatter light, independent of illumination or viewing geometry. IOPs are retrieved from spectral Remote Sensing Reflectance (Rrs) using the default configuration of the Generalized Inherent Optical Properties (GIOP) model framework. These products support water-type classification, water-clarity assessment, biogeochemical studies, and forward/adjoint radiative-transfer applications, and they enable more robust cross-sensor comparisons than purely apparent (AOP) products.\n\n Geophysical variables in this suite include:\n  • a — Total absorption coefficient (sum of pure water + phytoplankton + CDOM/detritus, m⁻¹)\n  • bb — Total backscattering coefficient (m⁻¹)\n• l2_flags — Level-2 processing flags (bitmask; see per-variable attributes for flag_masks and flag_meanings).\n• aph_443 — Phytoplankton absorption coefficient at 443 nm (m⁻¹)\n• aph_unc_443 — Uncertainty in absorption due to phytoplankton at 443 nm (m⁻¹)\n• adg_443 — Combined CDOM + non-algal detritus absorption coefficient at 443nm; accompanied by adg_s (spectral slope, units nm⁻¹).\n• adg_unc_443 — Uncertainty in absorption due to gelbstoff and detrital material at 443 nm (m⁻¹).\n• bbp_443 — Particulate backscattering coefficient at 443nm (m⁻¹); include bbp_s (power-law slope, unitless) describing spectral shape.\n• bbp_unc_443 — Uncertainty in particulate backscattering at 443 nm (m⁻¹).\n• rrsdiff — Fractional mean Rrs difference.\n","stac_version":"1.0.0","stac_extensions":["https://stac-extensions.github.io/storage/v2.0.0/schema.json"],"extent":{"spatial":{"bbox":[[-180,-90,180,90]]},"temporal":{"interval":[["2002-07-04T00:00:00.000Z",null]]}},"assets":{"nasa":{"href":"https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/Aqua-MODIS/","title":"Direct Download [1]","description":"NASA's Ocean Color Web - Data Distribution Site","roles":["data"]},"s3_ob_cumulus_prod_public_":{"href":"s3://ob-cumulus-prod-public/","roles":["data"],"title":"ob_cumulus_prod_public_","storage:refs":["aws"]},"s3_credentials":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentials","title":"S3 credentials API endpoint","roles":["metadata"]},"s3_credentials_documentation":{"href":"https://obdaac-tea.earthdatacloud.nasa.gov/s3credentialsREADME","title":"S3 credentials API endpoint documentation","roles":["metadata"]},"metadata":{"href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.xml","title":"CMR XML metadata for C3380708974-OB_CLOUD","type":"application/xml","roles":["metadata"]}},"providers":[{"name":"OB_CLOUD","roles":["producer"]},{"name":"NASA EOSDIS","roles":["host"]}],"links":[{"rel":"license","href":"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy","title":"EOSDIS Data Use Policy","type":"text/html"},{"rel":"about","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.html","title":"HTML metadata for collection","type":"text/html"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.native","title":"Native metadata for collection","type":"application/xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.echo10","title":"ECHO10 metadata for collection","type":"application/echo10+xml"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.json","title":"CMR JSON metadata for collection","type":"application/json"},{"rel":"via","href":"https://cmr.earthdata.nasa.gov/search/concepts/C3380708974-OB_CLOUD.umm_json","title":"CMR UMM_JSON metadata for collection","type":"application/vnd.nasa.cmr.umm+json"},{"rel":"self","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/MODISA_L2_IOP_2022.0","type":"application/json"},{"rel":"root","href":"https://cmr.earthdata.nasa.gov/stac","type":"application/json"},{"rel":"items","href":"https://cmr.earthdata.nasa.gov/stac/OB_CLOUD/collections/MODISA_L2_IOP_2022.0/items","type":"application/geo+json","title":"Collection Items"}],"license":"proprietary","keywords":["Ocean Optics","Earth Science","Oceans","Absorption","Scattering","Gelbstoff","Plankton","Aquatic Ecosystems","Biosphere","Ecosystems","Phytoplankton"],"summaries":{"platform":["Aqua"],"instruments":["MODIS"]},"storage:schemes":{"aws":{"type":"aws-s3","platform":"https://{bucket}.s3.{region}.amazonaws.com","bucket":"ob-cumulus-prod-public","region":"us-west-2"}}},{"type":"Collection","id":"MODISA_L2_OC_NRT_2022.0","title":"Aqua MODIS Level-2 Regional Ocean Color (OC) - Near Real-time (NRT) Data, version 2022.0","description":"The Ocean Color (OC) data suite provides calibrated, atmospherically corrected ocean-optics measurements and derived biogeophysical products. This data suite includes the Apparent Optical Properties (AOP) and provides satellite-derived measures of the interaction between solar radiation and the upper ocean. AOPs are “apparent” because they depend not only on the inherent optical properties (IOPs) of seawater and its constituents but also on the ambient light field. These variables are critical for studying light penetration, primary productivity, and biogeochemical cycling.\n\n Geophysical variables in this suite include:\n  • Kd_490 - Diffuse attenuation coefficient at 490 nm, KD2 algorithm (m⁻¹)\n  • Rrs - Remote sensing reflectance (sr⁻¹)\n  • angstrom - Aerosol Angstrom exponent, 443 to 865 nm\n  • chlor_a - Chlorophyll Concentration, OCI Algorithm (mg m⁻³)\n• l2_flags - Level-2 Processing Flags\n?~@? aot_869 - Aerosol optical thickness at 869 nm\n?~@? ipar - Instantaneous Photosynthetically Available Radiation (einstein m?~A?² s?~A?¹)\n?~@? nflh - Normalized Fluorescence Line Height (W m?~A?² um?~A?¹ sr?~A?¹)\n?~@? par - Photosynthetically Available Radiation, R. Frouin (einstein m?~A?² day?~A?¹)\n?~@? pic - Calcite Concentration, Balch and Gordon (mol m?~A?³)\n?~@? poc - Particulate Organic Carbon, D. 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