NOAA CDR GRIDSAT-B1: Geostationary IR Channel Brightness Temperature (NOAA/CDR/GRIDSAT-B1/V2)

Version V2

This dataset provides a high quality Climate Data
Record (CDR) of global infrared measurements from geostationary satellites.

The geostationary satellite data (GridSat-B1) provides data from 3
channels: the CDR-quality infrared window (IRWIN) channel (near 11μm),
the visible channel (near 0.6μm) and the infrared water vapor (IRWVP)
channel (near 6.7μm). The GridSat-B1 data is projected onto a global
0.07 degree latitude equal-angle grid with date coverage spanning from
1980-present. This data is sourced from the 3-hourly International Satellite
Cloud Climatology Project (ISCCP) B1 data. The satellites included in this
dataset with their longitudinal coverage over time can be seen here.
In regions of overlap the CDR methodology merges satellites by selecting
the nadir-most observations for each grid point.

NameDescriptionGee UnitGee ScaleGee Offset
irwin_cdrBrightness temperature near 11μm, nadir-most observationK0.01200
irwin_2Brightness temperature near 11μm, second-best observation (based on view zenith angle)K0.01200
irwin_3Brightness temperature, third-best observation based on view zenith angleK0.01200
irwvpBrightness temperature near 6.7μm, nadir-most observationK0.01200
irwvp_2Brightness temperature near 6.7μm, second-best observation based on view zenith angleK0.01200
vschnVisible reflectance near 0.6μm, nadir-most observation0.000041
vschn_2Visible reflectance near 0.6μm, second-best observation based on view zenith angle0.000041
irwin_vza_adjAdjustment made to all IRWIN channels. Provided to allow users to reverse the view zenith correction for the irwin_cdr variable.K0.25-10
satid_ir1satid values for irwin_cdr. For this and other satid bands, the mappings of satid to satellite name are given in the properties for each image
satid_ir2satid values per pixel for irwin_2
satid_ir3satid values per pixel for irwin_3
satid_wv1satid values per pixel for irwvp
satid_wv2satid values per pixel for irwvp2
satid_vs1satid values per pixel for vischn
satid_vs2satid values per pixel for vischn2


NOAA (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords ISCCP, brightness, cdr, fundamental, geostationary, infrared, noaa, reflectance, sr
License proprietary
Temporal Extent 12/31/1979, 4:00:00 PM - now
Citation Kenneth R. Knapp, and NOAA CDR Program (2014): NOAA Climate Data Record (CDR) of Gridded Satellite Data from ISCCP B1 (GridSat-B1) 11 micron Brightness Temperature, Version 2. [indicate subset used]. NOAA National Climatic Data Center. [doi:10.7289/V59P2ZKR]( [access date].
Type image_collection
GSD arc degreesm
Cadence hours
Asset schema {"name":"satid_0","description":"Satellite name (see notes)","type":"STRING"},{"name":"satid_1","description":"Satellite name (see notes)","type":"STRING"},{"name":"satid_2","description":"Satellite name (see notes)","type":"STRING"},{"name":"satid_3","description":"Satellite name (see notes)","type":"STRING"},{"name":"satid_4","description":"Satellite name (see notes)","type":"STRING"},{"name":"satid_5","description":"Satellite name (see notes)","type":"STRING"}