NOAA CDR AVHRR: Surface Reflectance, Version 4 (NOAA/CDR/AVHRR/SR/V4)

Version V4

The NOAA Climate Data Record (CDR) of AVHRR Surface Reflectance contains
gridded daily surface reflectance and brightness temperatures derived from
the Advanced Very High Resolution Radiometer (AVHRR) sensors onboard seven
NOAA polar orbiting satellites. The data are gridded at a
resolution of 0.05° and computed globally over land surfaces.

NameDescriptionGee WavelengthGee Scale
SREFL_CH1Bidirectional surface reflectance640nm0.0001
SREFL_CH2Bidirectional surface reflectance860nm0.0001
SREFL_CH3Bidirectional surface reflectance3.75μm0.0001
BT_CH3Brightness temperature3.75μm0.1
BT_CH4Brightness temperature11.0μm0.1
BT_CH5Brightness temperature12.0μm0.1
TIMEOFDAYHours since start of day0.01
RELAZRelative sensor azimuth angle0.01
SZENSolar zenith angle0.01
VZENView zenith angle, scale 0.010.01
QAQuality control bit flags


NOAA (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords avhrr, cdr, daily, land, noaa, reflectance, sr
License proprietary
Temporal Extent 6/23/1981, 5:00:00 PM - now
Citation Eric Vermote, Chris Justice, Ivan Csiszar, Jeff Eidenshink, Ranga Myneni, Frederic Baret, Ed Masuoka, Robert Wolfe, Martin Claverie and NOAA CDR Program (2014): NOAA Climate Data Record (CDR) of AVHRR Surface Reflectance, Version 4. [indicate subset used]. NOAA National Climatic Data Center.
Type image_collection
GSD arc degreesm
Platform NOAA-7
Instrument AVHRR
Cadence day
Asset schema {"name":"status","description":"'provisional' or 'permanent'\n","type":"STRING"}