{"feed":{"updated":"2026-08-05T13:44:32.400Z","id":"https://cmr.earthdata.nasa.gov:443/search/collections.json?sort_key=-usage_score","title":"ECHO dataset metadata","entry":[{"processing_level_id":"2","cloud_hosted":true,"boxes":["-90 -180 90 180"],"has_combine":false,"time_start":"2018-04-30T00:41:24.000Z","version_id":"1","updated":"2021-08-02T00:00:00.000Z","dataset_id":"TROPOMI/Sentinel-5P Near UV Aerosol Optical Depth and Single Scattering Albedo L2 1-Orbit Snapshot 7.5 km x 3 km","entry_id":"TROPOMAER_1","has_spatial_subsetting":false,"has_transforms":false,"associations":{"services":["S2874702816-XYZ_PROV"],"citations":["CIT3804180531-ESDIS","CIT3857556905-ESDIS","CIT3804318477-ESDIS","CIT4181359955-ESDIS","CIT4181354600-ESDIS","CIT4076038805-ESDIS","CIT3804284758-ESDIS","CIT3804285705-ESDIS","CIT4181383027-ESDIS","CIT4181374302-ESDIS","CIT4181376868-ESDIS","CIT3804165286-ESDIS","CIT4181377717-ESDIS"]},"has_variables":true,"data_center":"GES_DISC","short_name":"TROPOMAER","organizations":["NASA/GSFC/SED/ESD/TISL/GESDISC"],"title":"TROPOMI/Sentinel-5P Near UV Aerosol Optical Depth and Single Scattering Albedo L2 1-Orbit Snapshot 7.5 km x 3 km","coordinate_system":"CARTESIAN","summary":"As part of the NASA's Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, this projects describes a multi-decadal Fundamental Climate Data Record (FCDR) of calibrated radiances as well as an Earth System Data Record (ESDR) of aerosol properties over the continents derived from a 32-year record of satellite near-UV observations by three sensors.  \n\nThe Corpenicus Sentinel-5P TROPOMI Near UV (version 1) Aerosol Optical Depth and Single Scattering Albedo data product consists of aerosol absorption optical depth, aerosol total optical depth, aerosol layer height, aerosol UV index, and aerosol single scattering albedo at approximately 7.5kmx3km. This product also contains ancillary data for ocean corrected surface albedo and terrain pressure.\n\nData since July 19, 2022 (orbit 24688) has been processed with the most recent calibrated L1B radiance data (version 2.0.1). Data prior to July 19, 2022, data was processed with version 2.0.0 L1B radiances. Soon, the entire record will be reprocessed using version 2.0.1 L1B data. Any upgrades will be posted here. \n\nThese Level-2 data are stored in the NetCDF-4 format and are available from the Goddard Earth Sciences (GES) Data and Information Services Center (DISC).","service_features":{"opendap":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"esi":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"harmony":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false}},"orbit_parameters":{},"id":"C2152047233-GES_DISC","has_formats":false,"consortiums":["EOSDIS","GEOSS"],"original_format":"UMM_JSON","collection_data_type":"SCIENCE_QUALITY","archive_center":"NASA/GSFC/SED/ESD/TISL/GESDISC","has_temporal_subsetting":false,"browse_flag":true,"platforms":["Sentinel-5P"],"association_details":{"services":[{"concept_id":"S2874702816-XYZ_PROV"}],"citations":[{"concept_id":"CIT3804180531-ESDIS"},{"concept_id":"CIT3857556905-ESDIS"},{"concept_id":"CIT3804318477-ESDIS"},{"concept_id":"CIT4181359955-ESDIS"},{"concept_id":"CIT4181354600-ESDIS"},{"concept_id":"CIT4076038805-ESDIS"},{"concept_id":"CIT3804284758-ESDIS"},{"concept_id":"CIT3804285705-ESDIS"},{"concept_id":"CIT4181383027-ESDIS"},{"concept_id":"CIT4181374302-ESDIS"},{"concept_id":"CIT4181376868-ESDIS"},{"concept_id":"CIT3804165286-ESDIS"},{"concept_id":"CIT4181377717-ESDIS"}]},"online_access_flag":true,"links":[{"rel":"http://esipfed.org/ns/fedsearch/1.1/browse#","hreflang":"en-US","href":"https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/TROPOMAER_1.png"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/metadata#","hreflang":"en-US","href":"https://disc.gsfc.nasa.gov/datacollection/TROPOMAER_1.html"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/AER/TROPOMAER.1/"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/service#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/opendap/AER/TROPOMAER.1/contents.html"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/documentation#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/AER/TROPOMAER.1/doc/TropOMAER_README_C001_V1.1.1.pdf"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/metadata#","hreflang":"en-US","href":"https://earthdata.nasa.gov/about/competitive-programs/measures"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://search.earthdata.nasa.gov/search/granules?p=C2152047233-GES_DISC"}]},{"processing_level_id":"2","cloud_hosted":true,"boxes":["-90 -180 90 180"],"has_combine":false,"time_start":"1979-01-02T01:08:00.000Z","version_id":"1","updated":"2021-06-10T00:00:00.000Z","dataset_id":"NASA MEASURES Precipitation Ensemble based on SMMR Nimbus-7 NSIDC L1B Tbs 1-orbit L2 Swath 25x25km V1 (PRECIP_SMMR_NIMBUS7)","entry_id":"PRECIP_SMMR_NIMBUS7_1","has_spatial_subsetting":false,"has_transforms":false,"associations":{"services":["S2874702816-XYZ_PROV"]},"has_variables":true,"data_center":"GES_DISC","short_name":"PRECIP_SMMR_NIMBUS7","organizations":["NASA/GSFC/SED/ESD/TISL/GESDISC"],"title":"NASA MEASURES Precipitation Ensemble based on SMMR Nimbus-7 NSIDC L1B Tbs 1-orbit L2 Swath 25x25km V1 (PRECIP_SMMR_NIMBUS7)","coordinate_system":"CARTESIAN","summary":"The data presented in this level 2 orbital product are rain rate estimates expressed as mm/hour determined from brightness temperatures (Tbs) obtained from the Scanning Multichannel Microwave Radiometer (SMMR) flown on the Nimbus-7 satellite. Most of the products generated in this data set are based upon the algorithms developed for the 3rd Algorithm Intercomparison Project (AIP-3) of the Global Precipitation Climatology Project (GPCP).  Details of these 15 algorithms and development of a quality score which is a measure of confidence in the estimate, along with processing and algorithmic flags, can be found in the Algorithm Theoretical Basis Document  (ATBD).  The data in this product cover the period from 1979 to 1987 with one file per orbit.","time_end":"1987-08-20T14:02:00.000Z","service_features":{"opendap":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"esi":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"harmony":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false}},"orbit_parameters":{"swath_width":"780","period":"104","inclination_angle":"99.15","number_of_orbits":"1","start_circular_latitude":"-90"},"id":"C2368307664-GES_DISC","has_formats":false,"consortiums":["EOSDIS","GEOSS"],"original_format":"UMM_JSON","archive_center":"NASA/GSFC/SED/ESD/TISL/GESDISC","has_temporal_subsetting":false,"browse_flag":true,"platforms":["Nimbus-7"],"association_details":{"services":[{"concept_id":"S2874702816-XYZ_PROV"}]},"online_access_flag":true,"links":[{"rel":"http://esipfed.org/ns/fedsearch/1.1/browse#","hreflang":"en-US","href":"https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/PRECIP_SMMR_NIMBUS7.png"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/metadata#","hreflang":"en-US","href":"https://disc.gsfc.nasa.gov/datasets/PRECIP_SMMR_NIMBUS7_1/summary?keywords=PRECIP_SMMR_NIMBUS7_1"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/documentation#","hreflang":"en-US","href":"https://docserver.gesdisc.eosdis.nasa.gov/public/project/MEaSUREs/Kidd/20220601_P-FCDR_ATBD.pdf"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/documentation#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/Precipitation/PRECIP_SMMR_NIMBUS7.1/doc/Readme_FCDR.pdf"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/Precipitation/PRECIP_SMMR_NIMBUS7.1/"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/service#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/opendap/Precipitation/PRECIP_SMMR_NIMBUS7.1/contents.html"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://search.earthdata.nasa.gov/search/granules?p=C2368307664-GES_DISC"}]},{"processing_level_id":"2","cloud_hosted":true,"boxes":["-90 -180 90 180"],"has_combine":false,"time_start":"2002-08-31T00:00:00.000Z","version_id":"1","updated":"2026-04-29T00:00:00.000Z","dataset_id":"Aqua AIRS-MODIS 1-km Matchup Indexes V1 (Aqua_AIRS_MODIS1km_IND) at GES_DISC","entry_id":"Aqua_AIRS_MODIS1km_IND_1","has_spatial_subsetting":false,"has_transforms":false,"has_variables":false,"data_center":"GES_DISC","short_name":"Aqua_AIRS_MODIS1km_IND","organizations":["NASA/GSFC/SED/ESD/TISL/GESDISC"],"title":"Aqua AIRS-MODIS 1-km Matchup Indexes V1 (Aqua_AIRS_MODIS1km_IND) at GES_DISC","coordinate_system":"CARTESIAN","summary":" This dataset includes Aqua AIRS to MODIS 1-km collocation index product, within the framework of the Multidecadal Satellite Record of Water Vapor, Temperature, and Clouds (PI: Eric Fetzer) funded by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, 2017. The dataset is built upon work by Wang et al. 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Most of the products generated in this data set are based upon the algorithms developed for the 3rd Algorithm Intercomparison Project (AIP-3) of the Global Precipitation Climatology Project (GPCP).  Details of these 15 algorithms and development of a quality score which is a measure of confidence in the estimate, along with processing and algorithmic flags, can be found in the Algorithm Theoretical Basis Document  (ATBD).  The data in this product cover the period from 1995 to 2009 with one file per orbit.","time_end":"2009-11-20T01:09:01.000Z","service_features":{"opendap":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"esi":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"harmony":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false}},"orbit_parameters":{"swath_width":"1700","period":"98.8","inclination_angle":"102","number_of_orbits":"1","start_circular_latitude":"-90"},"id":"C2368309102-GES_DISC","has_formats":false,"consortiums":["EOSDIS","GEOSS"],"original_format":"UMM_JSON","archive_center":"NASA/GSFC/SED/ESD/TISL/GESDISC","has_temporal_subsetting":false,"browse_flag":true,"platforms":["DMSP 5D-2/F13"],"association_details":{"services":[{"concept_id":"S2874702816-XYZ_PROV"}]},"online_access_flag":true,"links":[{"rel":"http://esipfed.org/ns/fedsearch/1.1/browse#","hreflang":"en-US","href":"https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/PRECIP_SSMI_F13.png"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/metadata#","hreflang":"en-US","href":"https://disc.gsfc.nasa.gov/datasets/PRECIP_SSMI_F13_1/summary"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/documentation#","hreflang":"en-US","href":"https://docserver.gesdisc.eosdis.nasa.gov/public/project/MEaSUREs/Kidd/20220601_P-FCDR_ATBD.pdf"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/documentation#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/Precipitation/PRECIP_SSMI_F13.1/doc/Readme_FCDR.pdf"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/data/Precipitation/PRECIP_SSMI_F13.1/"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/service#","hreflang":"en-US","href":"https://measures.gesdisc.eosdis.nasa.gov/opendap/Precipitation/PRECIP_SSMI_F13.1/contents.html"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://search.earthdata.nasa.gov/search/granules?p=C2368309102-GES_DISC"}]},{"cloud_hosted":false,"boxes":["-90 -180 90 180"],"has_combine":false,"time_start":"2015-12-06T00:00:00.000Z","dif_ids":["MYD00F_6NRT"],"version_id":"6NRT","updated":"2016-02-04T00:00:00.000Z","dataset_id":"MODIS/Aqua Near Real Time (NRT) L0 PDS Data, 5-Min Swath","entry_id":"MYD00F_6NRT","has_spatial_subsetting":false,"has_transforms":false,"has_variables":false,"data_center":"LANCEMODIS","short_name":"MYD00F","organizations":["NASA/GSFC/EOS/ESDIS/LANCEMODIS"],"title":"MODIS/Aqua Near Real Time (NRT) L0 PDS Data, 5-Min Swath","coordinate_system":"CARTESIAN","summary":"MODIS/Aqua Near Real Time (NRT) L0 PDS Data 5-Min Swath.","service_features":{"opendap":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"esi":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false},"harmony":{"has_formats":false,"has_variables":false,"has_transforms":false,"has_combine":false,"has_spatial_subsetting":false,"has_temporal_subsetting":false}},"orbit_parameters":{},"id":"C1219032677-LANCEMODIS","has_formats":false,"consortiums":["EOSDIS","GEOSS"],"original_format":"DIF10","collection_data_type":"NEAR_REAL_TIME","archive_center":"NASA/GSFC/EOS/ESDIS/LANCEMODIS","has_temporal_subsetting":false,"browse_flag":false,"platforms":["Aqua"],"online_access_flag":true,"links":[{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/modis-nrt"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"http://lance3.modaps.eosdis.nasa.gov/data_products/"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/data#","hreflang":"en-US","href":"ftp://nrt3.modaps.eosdis.nasa.gov/allData/6/MYD00F/"},{"rel":"http://esipfed.org/ns/fedsearch/1.1/metadata#","hreflang":"en-US","href":"http://modis.gsfc.nasa.gov/sci_team/"}]},{"processing_level_id":"0","cloud_hosted":false,"boxes":["-90 -180 90 180"],"has_combine":false,"time_start":"2017-10-12T00:00:00.000Z","version_id":"6.1NRT","dataset_id":"MODIS/Aqua L0 PDS Data, 5-Min Swath - 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There are about 15 Level 2 data files produced per day.  Each contains retrieved aerosol properties averaged to a resolution of 3x3 SeaWiFS pixels (13.5x13.5 km at the center of the swath given 4.5km SeaWiFS pixels). \n\n The primary data parameters are aerosol optical thickness, and Angstrom 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