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  2. EOSDIS Data News - 02/24/2017

EOSDIS Data News - 02/24/2017

NSIDC DAAC

  • NASA's National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) also announced that, due to a problem with the Antenna Azimuth file used to process the half-orbit 01966_A, the Soil Moisture Active Passive (SMAP) Science Data Systems (SDS) team has replaced the following files:
    • SMAP_L1B_TB_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-11)
    • SMAP_L1C_TB_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L1C_TB_E_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L2_SM_P_E_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L2_SM_P_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-16)

SMAP SDS has corrected the Antenna Azimuth file and regenerated these half-orbits. Users are advised to download the replacement data files soon.

  • The Application for Extracting and Exploring Analysis Ready Samples (AppEEARS), a web-based data extraction and visualization tool, can now be used to explore Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover datasets. Point samples can be ordered in AppEEARS by submitting a list of geographic coordinates for the desired location(s). The complete collections of MOD10A1, MYD10A1, MOD10A2, and MYD10A2 are available for extraction in AppEEARS, providing over 16 years’ worth of snow cover data.
  • The MEaSUREs Greenland Ice Mapping Project (GIMP) Land Ice and Ocean Classification Mask dataset is now available at NSIDC DAAC. This dataset, part of the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, provides a complete land ice and ocean classification mask for the Greenland ice sheet that was mapped using a combination of Landsat 7 ETM+ panchromatic band imagery, and RADARSAT-1 synthetic aperture radar (SAR) amplitude images
  • The Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis Data dataset at NSIDC DAAC has been updated with snow depth analysis data for 2016

  • Due to a problem involving the atmospheric correction algorithm used to process SMAP Level-1B (L1B) brightness temperatures, some half-orbit data files contain invalid brightness temperature values. The errors occur infrequently, about one-half orbit per month, and affected files have been removed from the following datasets:

The SMAP SDS team is working to correct the issue in forward processing. Until that time, files will continue to be affected with a frequency of approximately one-half orbit per month. NSIDC DAAC will continue to identify and remove all affected files. Files currently affected are documented in a missing files spreadsheet, which will be updated and posted to the following How To article approximately once per month.

  • NSIDC DAAC also announced that, due to a problem with the Antenna Azimuth file used to process the half-orbit 01966_A, the SMAP SDS team has replaced the following files:
    • SMAP_L1B_TB_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-11)
    • SMAP_L1C_TB_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L1C_TB_E_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L2_SM_P_E_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-14)
    • SMAP_L2_SM_P_01966_A_20150614T231537_R14010_001.h5 (Regenerated 2017-02-16)

SMAP SDS has corrected the Antenna Azimuth file and regenerated these half-orbits. Users are advised to download the replacement data files soon.

Suomi-NPP OMPS / GES DISC

  • The Suomi National Polar-orbiting Partnership (Suomi-NPP) Ozone Mapping and Profiler Suite (OMPS) Limb Profiler (LP) Science Team and NASA's Goddard Earth Sciences Data and Information Services Center (GES DISC) released the Version 1 AER675 aerosol profile data product from NASA's OMPS LP instrument on the joint NASA/NOAA Suomi-NPP satellite. This product consists of daily files containing individual aerosol extinction coefficient profiles retrieved at 675 nm (10-40 km altitude range). Cloud height detection information is also reported for each profile for the altitude range 5-35 km. Regular OMPS LP measurements began in April 2012 and continue to the present. See OMPS LP Data News for additional information on these data including dataset documentation and access to the data.


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Last Updated: May 7, 2019 at 3:13 PM EDT