Page Summary
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The NOAA Climate Data Record (CDR) of AVHRR Surface Reflectance provides daily gridded surface reflectance and brightness temperatures from AVHRR sensors on NOAA satellites from 1981 to 2013.
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The dataset includes bands for surface reflectance at different wavelengths and brightness temperatures, along with quality control flags and angles.
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Known issues with the dataset include incorrect values in the TIMEOFDAY variable and slight inaccuracies in latitude and longitude values.
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This dataset is nonproprietary, publicly available, and has no restrictions on use.
- Dataset Availability
- 1981-06-24T00:00:00Z–2013-12-31T00:00:00Z
- Dataset Provider
- NOAA
- Cadence
- 1 Day
- Tags
Description
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.
Known issues with this dataset include:
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TIMEOFDAY variable contains values that are too large by 1 day
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Latitude values are not correctly associated with the center of the grid cell, error is < 0.002 degrees
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Longitude values are not correctly associated with the center of the grid cell, error is < 0.02 degrees
See technical note from the data provider .
Provider's note: the orbital drift of N-19 (the last NOAA satellite carrying the AVHRR sensor) began to severely degrade the retrieved product quality. Therefore, VIIRS is now the primary sensor being used for these products from 2014-present.
Bands
Pixel Size 5566 meters
Bands
SREFL_CH1
Bidirectional surface reflectance
SREFL_CH2
Bidirectional surface reflectance
SREFL_CH3
Bidirectional surface reflectance
BT_CH3
Brightness temperature
BT_CH4
Brightness temperature
BT_CH5
Brightness temperature
TIMEOFDAY
Hours since start of day
RELAZ
Relative sensor azimuth angle
SZEN
Solar zenith angle
VZEN
View zenith angle, scale 0.01
QA
Quality control bit flags
Image Properties
Image Properties
| Name | Type | Description |
|---|---|---|
|
status
|
STRING | 'provisional' or 'permanent' |
Terms of Use
Terms of Use
The NOAA CDR Program's official distribution point for CDRs is NOAA's National Climatic Data Center which provides sustained, open access and active data management of the CDR packages and related information in keeping with the United States' open data policies and practices as described in the President's Memorandum on "Open Data Policy" and pursuant to the Executive Order of May 9, 2013, "Making Open and Machine Readable the New Default for Government Information". In line with these policies, the CDR data sets are nonproprietary, publicly available, and no restrictions are placed upon their use. For more information, see the Fair Use of NOAA's CDR Data Sets, Algorithms and Documentation pdf.
Citations
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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.
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee . ImageCollection ( 'NOAA/CDR/AVHRR/SR/V5' ) . filter ( ee . Filter . date ( '2018-05-01' , '2018-06-01' )); var surfaceReflectance = dataset . select ( 'SREFL_CH1' ); var surfaceReflectanceVis = { min : - 1000.0 , max : 9000.0 , palette : [ '003b02' , '006a03' , '008d05' , '01be07' , '01ff09' , 'ffffff' ], }; Map . setCenter ( 52.48 , 71.72 , 1 ); Map . addLayer ( surfaceReflectance , surfaceReflectanceVis , 'Surface Reflectance' );
