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  • ABoVE: Ecosystem Map, Great Slave Lake Area, Northwest Territories, Canada, 1997-2011

    https://cmr.earthdata.nasa.gov/search/concepts/C1657940496-ORNL_DAAC.xml
    Description:

    This dataset provides an ecosystem type map at 12.5 meter pixel spacing and 0.2 ha minimum mapping unit for the area surrounding Great Slave Lake, Northwest Territories, Canada for the time period 1997 to 2011. The map includes nine classes for peatland, wetland, and upland areas derived from a Random Forest classification trained on multi-date, multi-sensor remote sensing images across the study extent, and using field data and high-resolution Worldview-2 image interpretation for training and validation. The nine classes are: Water, Marsh, Swamp, Open Fen, Treed Fen, Bog, Upland Deciduous, Upland Conifer, and Sparsely Vegetated. A tenth map class identifies areas of historical fires (prior to 2011) that are currently undergoing post-fire successional revegetation. This dataset provides an ecosystem type map of the area before the large fire season of 2014 to better understand the effects of fires in the area.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: 58.51 -123.04 65.15 -109.46

    ORNL_DAAC Short Name: Great_Slave_Lake_Ecosystem_Map_1695 Version ID: 1 Unique ID: C1657940496-ORNL_DAAC

  • ABoVE: SAR-based Methane Ebullition Flux from Lakes, Five Regions, Alaska, 2007-2010

    https://cmr.earthdata.nasa.gov/search/concepts/C1906827740-ORNL_DAAC.xml
    Description:

    This dataset provides Synthetic Aperture Radar (SAR) estimates of lake-source methane ebullition flux in mg CH4/m2/d for thousands of lakes in five regions across Alaska. The study regions include the Atqasuk, Barrow Peninsula, Fairbanks, northern Seward Peninsula, and Toolik. L-band SAR backscatter values for early winter lake ice scenes were collected from 2007 to 2010 over 5,143 lakes using the Phased Array type L-band Synthetic Aperture Radar (PALSAR) instrument on the Advanced Land Observing Satellite (ALOS-1) satellite. The backscatter data were combined with field measurements of methane ebullition from 48 study lakes across the five regions to obtain a volumetric flux estimate for each lake. Mean methane gas-fractions from each region were applied to the SAR-based volumetric fluxes to obtain an estimate of methane ebullition mass flux per lake. The data files contain lake perimeters and the lake-specific attributes of lake area, SAR backscatter values and standard errors, volumetric flux with standard errors, mean percent of methane from gas samples, and methane ebullition mass flux.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: 64.44 -165.17 71.35 -147.37

    ORNL_DAAC Short Name: SAR_Methane_Ebullition_AK_1790 Version ID: 1 Unique ID: C1906827740-ORNL_DAAC

  • ALOS AVNIR-2 Data

    https://cmr.earthdata.nasa.gov/search/concepts/C1214560353-JAXA.xml
    Description:

    The Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) is a visible and near infrared radiometer for observing land and coastal zones. It provides better spatial land-coverage maps and land-use classification maps for monitoring regional environments. AVNIR-2 is a successor to AVNIR that was on board the Advanced Earth Observing Satellite (ADEOS), which was launched in August 1996. Its instantaneous field-of-view (IFOV) is the main improvement over AVNIR. AVNIR-2 also provides 10m spatial resolution images, an improvement over the 16m resolution of AVNIR in the multi-spectral region. Improved CCD detectors (AVNIR has 5,000 pixels per CCD; AVNIR-2 7,000 pixels per CCD) and electronics enable this higher resolution. A cross-track pointing function for prompt observation of disaster areas is another improvement. The pointing angle of AVNIR-2 is +44 and - 44 degree. --------------------------------- AVNIR-2 Characteristics --------------------------------- Number of Bands 4 Wavelength Band 1 : 0.42 to 0.50 micrometers Band 2 : 0.52 to 0.60 micrometers Band 3 : 0.61 to 0.69 micrometers Band 4 : 0.76 to 0.89 micrometers Spatial Resolution 10m (at Nadir) Swath Width 70km (at Nadir) S/N >200 MTF Band 1 through 3 : >0.25 Band 4 : >0.20 Number of Detectors 7000/band Pointing Angle - 44 to + 44 degree Bit Length 8 bits

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    JAXA Short Name: alos_avnir-2_Latest Version Version ID: Latest Version Unique ID: C1214560353-JAXA

  • ALOS Data (JAXA/EOC)

    https://cmr.earthdata.nasa.gov/search/concepts/C1214560381-JAXA.xml
    Description:

    ALOS is a comprehensive earth observing satellite system which includes optical sensors for high resolution observation, wide area observation, and fine accuracy DEM production, and SAR with adjustable off-nadir observation function. Objectives of the ALOS system development and operation are (1) Development and update of maps for Japan and other countries - including those in the Asia-Pacific region (Cartography), (2) Regional observation for sustainable development (Regional Observation), (3) Timely disaster monitoring around the world (Disaster Monitoring), and (4) Survey of natural resources (Resource Survey). ALOS has three sensors for Earth observations, Panchromatic Remote-Sensing Instrument for Stereo Mapping (PRISM), Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2), and Phased Array type L-band Synthetic Aperture Radar (PALSAR). ----------------------------------------------- ALOS ----------------------------------------------- Launch Vehicle H-IIA Launch Date January 24, 2006 Launch Site Tanegashima Space Center, Kagoshima Weight Approx. 4,000 kg Designed Life Span 3-5 years Orbit Sun-Synchronous Subrecurrent Local Time at Desending Node 10:30 AM ? 15min. Altitude 691.65km (above equator) Inclination 98.16 degree Orbital Period 98.7 min. Revolutions per day 14+27/46rev./day Recurrent Period 46 days Longitude Repeatability +/-2.5km (above equator)

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    JAXA Short Name: ALOS_Data_JAXA_EOC Version ID: Latest Version Unique ID: C1214560381-JAXA

  • ALOS Images(ROSCOSMOS)

    https://cmr.earthdata.nasa.gov/search/concepts/C1965336815-ESA.xml
    Description:

    This collection provides access to images archived at ROSCOSMOS for ALOS mission.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    ESA Short Name: ALOS Version ID: NA Unique ID: C1965336815-ESA

  • ALOS PALSAR Data

    https://cmr.earthdata.nasa.gov/search/concepts/C1214560405-JAXA.xml
    Description:

    The Phased Array type L-band Synthetic Aperture Radar (PALSAR) is an active microwave sensor using L-band frequency to achieve cloud-free and day-and-night land observation. It provides higher performance than theJERS-1's synthetic aperture radar (SAR). Fine resolution in a conventional mode, but PALSAR will have another advantageous observation mode. ScanSAR, which will enable us to acquire a 250 to 350km width of SAR images (depending on the number of scans) at the expense of spatial resolution. This swath is three to five times wider than conventional SAR images. The development of the PALSAR is a joint project between JAXA and the Japan Resources Observation System Organization (JAROS).

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    JAXA Short Name: alos_palsar_Latest Version Version ID: Latest Version Unique ID: C1214560405-JAXA

  • ALOS PALSAR International Polar Year Antarctica

    https://cmr.earthdata.nasa.gov/search/concepts/C1965336817-ESA.xml
    Description:

    International Polar Year (IPY), focusing on the north and south polar regions, aimed to investigate the impact of how changes to the ice sheets affect ocean and climate change to the habitats in these regions. IPY was a collaborative project involving over sixty countries for two years from March 2007 to March 2009. To meet the project goal, world space agencies observed these regions intensively using their own Earth observation satellites.One of these satellites, ALOS - with the PALSAR (Phased Array type L-band Synthetic Aperture Radar) sensor - observed these regions independently from day-night conditions or weather conditions. >Carrying on this initiative, ESA is providing the ALOS PALSAR IPY Antarctica dataset, which consists of full resolution ALOS PALSAR ScanSAR WB1 products (Level L1.5, 100m spatial resolution, 250-350Km swath) over Antarctica from 2008 to 2010 (Cycles 21 - 24, from Jul to Dec 2008; cycles 27 – 31, from May 2009 to Mar 2010) . The extension of this dataset by more recent acquisitions over Antarctica is currently on going.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    ESA Short Name: ALOSIPY Version ID: NA Unique ID: C1965336817-ESA

  • ALOS PALSAR products

    https://cmr.earthdata.nasa.gov/search/concepts/C1965336814-ESA.xml
    Description:

    ALOS PALSAR products are available in following modes:.• Fine Beam Single polarisation(FBS), single polarisation (HH or VV)• Fine Beam Double polarisation (FBD), double polarisation (HH/HV or VV/VH)• Polarimetry mode (PLR), with four polarisations simultaneously• ScanSAR Burst mode 1 (WB1), single polarisation [currently not available, will be included soon]Following processing levels are available:• RAW( level 1.0): Raw data generated by every downlink segment and every band. Divided into an equivalent size to one scene.• SLC (level 1.1): Slant range single look complex product. Not available for WB1• GDH (level 1.5):Ground range Detected, Normal resolution product• GEC (level 1.5): Geocoded productDataset content:The dataset contains all ESA acquisitions over the ADEN zone (Europe, Africa and the Middle East) plus some worldwide products received from JAXA. Further information on ADEN zones can be found in this technical note.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    ESA Short Name: ALOS.PALSAR.FBS.FBD.PLR.products Version ID: NA Unique ID: C1965336814-ESA

  • ALOS PRISM Data

    https://cmr.earthdata.nasa.gov/search/concepts/C1214560379-JAXA.xml
    Description:

    The Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) is a panchromatic radiometer with 2.5m spatial resolution at nadir. Its extracted data will provide a highly accurate digital surface model (DSM). PRISM has three independent optical systems for viewing nadir, forward and backward producing a stereoscopic image along the satellite's track. Each telescope consists of three mirrors and several CCD detectors for push-broom scanning. The nadir-viewing telescope covers a width of 70km; forward and backward telescopes cover 35km each. The telescopes are installed on the sides of the optical bench with precise temperature control. Forward and backward telescopes are inclined +24 and -24 degrees from nadir to realize a base-to-height ratio of 1.0. PRISM's wide field of view (FOV) provides three fully overlapped stereo (triplet) images of a 35km width without mechanical scanning or yaw steering of the satellite. Without this wide FOV, forward, nadir, and backward images would not overlap each other due to the Earth's rotation.--------------------------------PRISM Characteristics --------------------------------Number of Bands 1 (Panchromatic) Wavelength 0.52 to 0.77 micrometers Number of Optics 3 (Nadir; Forward; Backward) Base-to-Height ratio 1.0 (between Forward and Backward view) Spatial Resolution 2.5m (at Nadir) Swath Width 70km (Nadir only) / 35km (Triplet mode) S/N >70 MTF >0.2 Number of Detectors 28000 / band (Swath Width 70km)14000 / band (Swath Width 35km) Pointing Angle -1.5 to +1.5 degrees(Triplet Mode, Cross-track direction) Bit Length 8 bits Observation Modes: Mode 1 Triplet observation mode using Forward, Nadir, and Backwardviews (Swath width is 35km)Mode 2 Nadir (70km) + Backward (35km) Mode 3 Nadir (70km) Mode 4 Nadir (35km) + Forward (35km) Mode 5 Nadir (35km) + Backward (35km) Mode 6 Forward (35km) + Backward (35km) Mode 7 Nadir (35km) Mode 8 Forward (35km) Mode 9 Backward (35km)

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    JAXA Short Name: alos_prism_Latest Version Version ID: Latest Version Unique ID: C1214560379-JAXA

  • ALOS_PALSAR_KMZ

    https://cmr.earthdata.nasa.gov/search/concepts/C1206156901-ASF.xml
    Description:

    ALOS PALSAR KMZ

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    ASF Short Name: ALOS_PSR_KMZ Version ID: 1 Unique ID: C1206156901-ASF