NASA's Atmospheric Science Data Center (ASDC) added datasets from the entire Deriving Information on Surface conditions from Column and VERtically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) Campaign (including Maryland, Texas, California, and Colorado) to the Toolsets for Airborne Data. The overarching objective of the DISCOVER-AQ investigation was to improve the interpretation of satellite observations to diagnose near-surface conditions relating to air quality. DISCOVER-AQ provides an integrated dataset of airborne and surface observations relevant to the diagnosis of surface air quality conditions from space. See https://tad.larc.nasa.gov to order and download DISCOVER-AQ data.
NASA's Goddard Earth Sciences Data and Information Services Center (GES DISC) completed ingest of the joint NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Cross-track Infrared Sounder (CrIS) Level 1B (L1B) Full Spectral Resolution product, which was produced by the Atmospheres Science Investigator-led Processing Systems and provided to GES DISC for distribution to the wider user community, albeit as a provisional release. In addition, Suomi NPP CrIS and Advanced Technology Microwave Sounder (ATMS) L1 data have been produced for 2014 to present and are ready for release pending receipt of dataset documentation from the provider. Data production for the entire record (2012-2016) continues.
Global Imagery Browse Services (GIBS)/Worldview
NASA's Global Imagery Browse Services (GIBS) and Worldview recently released the following products:
- Multi-angle Imaging SpectroRadiometer (MISR) Aerosol Optical Depth (AOD) (monthly)
- Measurement of Pollution in the Troposphere (MOPITT) Carbon Monoxide (monthly)
- Advanced Microwave Scanning Radiometer-2 (AMSR-2) Soil Moisture Single Channel Algorithm
- Making Earth System data records for Use in Research Environments (MEaSUREs) Ice Velocity for Greenland and Antarctica
- Visible Infrared Imager Radiometer Suite (VIIRS) Black Marble Nighttime Lights 2012 and 2016 (see examples of the use of the Black Marble products at https://earthobservatory.nasa.gov/NaturalHazards/view.php?id=90008).
For more details about these new products, refer to https://wiki.earthdata.nasa.gov/pages/viewpage.action?pageId=81068647.
NASA's National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) released the Making Earth System Data Records for Use in Research Environments (MEaSUREs) Greenland Ice Mapping Project (GIMP) Digital Elevation Model from GeoEye and Worldview Imagery dataset.
This dataset consists of an enhanced resolution digital elevation model for the Greenland Ice Sheet.
NSIDC DAAC released a new version of datasets from the MEaSUREs program. The new version, 1.1, corrects the location of the upper left pixel in each GeoTIFF file. The corrected location of the upper left pixel is the distance in meters from the North Pole to the upper left corner of the upper left pixel, effectively shifting the location by one-half pixel to the upper left relative to their positions in the previous version. Only the geolocation metadata in each GeoTIFF has changed; the data array is the same as in the previous version. To download these data, see the following:
- MEaSUREs Greenland Ice Mapping Project (GIMP) Digital Elevation Model (DEM)
- MEaSUREs GIMP 2000 Image Mosaic
- MEaSUREs GIMP Land Ice and Ocean Classification Mask
NSIDC DAAC has released Version 2 of MEaSUREs Interferometric Synthetic Aperture Radar (InSAR)-Based Antarctica Ice Velocity Map. Major updates to the dataset include data from 2011-2016 acquired from multiple International satellites. Landsat-8 optical imagery also was integrated into the data to improve coverage. The mosaicking method was updated to make best use of the large number of scenes used for the mosaic. In addition, several new parameters are included for assessing the quality of the data: the standard deviation of vx and vy for each pixel and count of scenes used for each pixel. Coverage increased from 95.1% to 99.6% and a reduction in error was achieved due to the utilization of more data.
The Defense Meteorological Satellite Program (DMSP) Special Sensor Microwave Imager/Sounder (SSM/I-SSMIS) Daily Polar Gridded Brightness Temperatures dataset, available at NSIDC DAAC has been updated through 31 March 2017.
- CARVE: L4 Gridded Particle Trajectories for WRF-STILT model, 2012-2016
- CARVE: L4 Gridded Footprints from WRF-STILT model, 2012-2016
- US Regional Climate Reference Network (USCRN) (83 sites)
- Snow Climate Analysis Network (SCAN) (227 sites)
- Snow Telemetry (SNOTEL) Data Collection Network (454 sites)
- AmeriFlux (AMERIFLUX2015, 123 sites)
- Soil Moisture Conditions from the Gravity Recovery and Climate Experiment Data Assimilation for Drought Monitor (GRACE DA DM)
ORNL DAAC released the collection 6 version of the Moderate Resolution Imaging Spectroradiometer (MODIS) subsetting and visualization tools https://modis.ornl.gov/cgi-bin/MODIS/global/subset.pl. Several new features have been added to this version of the tool:
- 14 MODIS Collection 6 land products offered
- Earthdata login implemented
- User order history (with Earthdata login)
- Improved performance
- Updated visualizations
ORNL DAAC released the Pre-Arctic-Boreal Vulnerability Experiment (Pre-ABoVE): Vegetation Types and Physiographic Features, Toolik Lake Area, Alaska dataset.
NASA's Physical Oceanography DAAC (PO.DAAC) informed its users that NOAA’s National Centers for Environmental Information stopped production of its Group for High Resolution Sea Surface Temperature (GHRSST) Data Specification (GDS) 1 Level 4 Sea Surface Temperature dataset (see https://podaac.jpl.nasa.gov/announcements/2017-03-22_GHRSST_GDS1_L4_NCDC_AVHRR_OI_SST_Dataset). Users are encouraged to switch to the GDS2 version of this dataset, which is already in full production.
NASA's Physical Oceanography DAAC (PO.DAAC) announced the release of the version 7.0.1 WindSat Level 3U (uncollated) Sea Surface Temperature dataset from Remote Sensing Systems. This dataset contains global near daily-coverage Level 3U SST with 25 km spatial resolution.
NASA's Socioeconomic Data and Applications Center (SEDAC) released the Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Settlement Points, Revision 01 and Urban Extent Polygons, Revision 01 on 14 March. These revisions incorporate improved geospatial location information, new settlement points, and new urban extents identified from multiple sources. The Urban Extent Polygons revision now includes polygons in ESRI shapefile format (.shp) with the settlement name (or name of the largest city in the case of multi-city agglomerations). Polygons are defined by the extent of night-time lights and approximated urban extents (circles) based on buffered settlement points (see http://sedac.ciesin.columbia.edu/data/set/grump-v1-settlement-points-rev01/ and http://sedac.ciesin.columbia.edu/data/set/grump-v1-urban-ext-polygons-rev01).