1. EOSDIS Data News - 4/21/2017

EOSDIS Data News - 4/21/2017


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.


Global Imagery Browse Services (GIBS) and Worldview recently released the following products:

  • Multi-angle Imaging SpectroRadiometer Aerosol Optical Depth (monthly)
  • Measurement of Pollution in the Troposphere Carbon Monoxide (monthly)
  • Advanced Microwave Scanning Radiometer-2 Soil Moisture Single Channel Algorithm
  • Making Earth System data records for Use in Research Environments Ice Velocity for Greenland and Antarctica
  • Visible/Infrared Imager Radiometer Suite 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.


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:


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 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).

Last Updated: Apr 21, 2017 at 9:27 AM EDT