The NOAA Climate Data Record (CDR) of AVHRR Normalized Difference Vegetation
Index (NDVI) contains gridded daily NDVI derived from the NOAA AVHRR Surface
Reflectance product. It provides a measurement of surface vegetation
coverage activity, gridded at a resolution of 0.05° and computed globally
over land surfaces.
Known issues with this dataset include:
TIMEOFDAY variable contains values that are too large by 1 day
Latitude values are not correctly associated with the center of
the grid cell, error is < 0.002 degrees
Longitude values are not correctly associated with the center of
the grid cell, error is < 0.02 degrees
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
Name
Units
Min
Max
Scale
Pixel Size
Description
NDVI
-9998*
9998*
0.0001
meters
Normalized difference vegetation index
TIMEOFDAY
h
0*
2400*
0.01
meters
Hours since start of day
QA
meters
Quality control bit flags
Bitmask for QA
Bit 0: Unused
0: No
1: Yes
Bit 1: Pixel is cloudy
0: No
1: Yes
Bit 2: Pixel contains cloud shadow
0: No
1: Yes
Bit 3: Pixel is over water
0: No
1: Yes
Bit 4: Pixel is over sunglint
0: No
1: Yes
Bit 5: Pixel is over dense dark vegetation
0: No
1: Yes
Bit 6: Pixel is at night (high solar zenith)
0: No
1: Yes
Bit 7: Channels 1-5 are valid
0: No
1: Yes
Bit 8: Channel 1 value is invalid
0: No
1: Yes
Bit 9: Channel 2 value is invalid
0: No
1: Yes
Bit 10: Channel 3 value is invalid
0: No
1: Yes
Bit 11: Channel 4 value is invalid
0: No
1: Yes
Bit 12: Channel 5 value is invalid
0: No
1: Yes
Bit 13: RHO3 value is invalid
0: No
1: Yes
Bit 14: BRDF correction is invalid
0: No
1: Yes
Bit 15: Polar flag, latitude over 60 degrees (land) or 50 degrees (ocean)
0: No
1: Yes
* estimated min or max value
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
Citations:
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 Normalized Difference
Vegetation Index (NDVI), Version 4. [indicate subset used]. NOAA National
Climatic Data Center.
doi:10.7289/V5PZ56R6
The NOAA Climate Data Record (CDR) of AVHRR Normalized Difference Vegetation Index (NDVI) contains gridded daily NDVI derived from the NOAA AVHRR Surface Reflectance product. It provides a measurement of surface vegetation coverage activity, gridded at a resolution of 0.05° and computed globally over land surfaces. Known issues with this …
[null,null,[],[[["\u003cp\u003eThe NOAA CDR AVHRR NDVI dataset provides daily Normalized Difference Vegetation Index (NDVI) measurements from 1981 to 2013.\u003c/p\u003e\n"],["\u003cp\u003eIt offers global coverage of land surfaces with a spatial resolution of 0.05°.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is derived from the NOAA AVHRR Surface Reflectance product and measures surface vegetation coverage activity.\u003c/p\u003e\n"],["\u003cp\u003eKnown issues include slight inaccuracies in latitude and longitude values and potential errors in the TIMEOFDAY variable.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for research, education, and nonprofit use through Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# NOAA CDR AVHRR NDVI: Normalized Difference Vegetation Index, Version 5\n\nDataset Availability\n: 1981-06-24T00:00:00Z--2013-12-31T00:00:00Z\n\nDataset Provider\n:\n\n\n [NOAA](https://www.ncei.noaa.gov/products/climate-data-records/normalized-difference-vegetation-index)\n\nCadence\n: 1 Day\n\nTags\n:\n[avhrr](/earth-engine/datasets/tags/avhrr) [cdr](/earth-engine/datasets/tags/cdr) [daily](/earth-engine/datasets/tags/daily) [land](/earth-engine/datasets/tags/land) [ndvi](/earth-engine/datasets/tags/ndvi) [noaa](/earth-engine/datasets/tags/noaa) [vegetation-indices](/earth-engine/datasets/tags/vegetation-indices) \n\n#### Description\n\nThe NOAA Climate Data Record (CDR) of AVHRR Normalized Difference Vegetation\nIndex (NDVI) contains gridded daily NDVI derived from the NOAA AVHRR Surface\nReflectance product. It provides a measurement of surface vegetation\ncoverage activity, gridded at a resolution of 0.05° and computed globally\nover land surfaces.\n\nKnown issues with this dataset include:\n\n- TIMEOFDAY variable contains values that are too large by 1 day\n\n- Latitude values are not correctly associated with the center of\n the grid cell, error is \\\u003c 0.002 degrees\n\n- Longitude values are not correctly associated with the center of\n the grid cell, error is \\\u003c 0.02 degrees\n\nSee [technical note from the data provider](https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Normalized_Difference_Vegetation_Index/AVHRR/AlgorithmDescriptionAVHRR_01B-20b.pdf).\n\nProvider's note: the orbital drift of N-19 (the last NOAA satellite\ncarrying the AVHRR sensor) began to severely degrade the retrieved\nproduct quality. Therefore, VIIRS is now the primary sensor being used for\nthese products from 2014-present.\n\n### Bands\n\n\n**Pixel Size**\n\n5566 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|-------------|-------|---------|--------|--------|------------|----------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `NDVI` | | -9998\\* | 9998\\* | 0.0001 | meters | Normalized difference vegetation index |\n| `TIMEOFDAY` | h | 0\\* | 2400\\* | 0.01 | meters | Hours since start of day |\n| `QA` | | | | | meters | Quality control bit flags |\n| Bitmask for QA - Bit 0: Unused - 0: No - 1: Yes - Bit 1: Pixel is cloudy - 0: No - 1: Yes - Bit 2: Pixel contains cloud shadow - 0: No - 1: Yes - Bit 3: Pixel is over water - 0: No - 1: Yes - Bit 4: Pixel is over sunglint - 0: No - 1: Yes - Bit 5: Pixel is over dense dark vegetation - 0: No - 1: Yes - Bit 6: Pixel is at night (high solar zenith) - 0: No - 1: Yes - Bit 7: Channels 1-5 are valid - 0: No - 1: Yes - Bit 8: Channel 1 value is invalid - 0: No - 1: Yes - Bit 9: Channel 2 value is invalid - 0: No - 1: Yes - Bit 10: Channel 3 value is invalid - 0: No - 1: Yes - Bit 11: Channel 4 value is invalid - 0: No - 1: Yes - Bit 12: Channel 5 value is invalid - 0: No - 1: Yes - Bit 13: RHO3 value is invalid - 0: No - 1: Yes - Bit 14: BRDF correction is invalid - 0: No - 1: Yes - Bit 15: Polar flag, latitude over 60 degrees (land) or 50 degrees (ocean) - 0: No - 1: Yes ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\n\\* estimated min or max value\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|--------|--------|------------------------------|\n| status | STRING | 'provisional' or 'permanent' |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe NOAA CDR Program's official distribution point for CDRs is NOAA's\nNational Climatic Data Center which provides sustained, open access and\nactive data management of the CDR packages and related information in\nkeeping with the United States' open data policies and practices as\ndescribed in the President's Memorandum on \"Open Data Policy\" and pursuant\nto the Executive Order of May 9, 2013, \"Making Open and Machine Readable\nthe New Default for Government Information\". In line with these policies,\nthe CDR data sets are nonproprietary, publicly available, and no\nrestrictions are placed upon their use. For more information, see the\n[Fair Use of NOAA's CDR Data Sets, Algorithms and Documentation](https://www1.ncdc.noaa.gov/pub/data/sds/cdr/CDRs/Aerosol_Optical_Thickness/UseAgreement_01B-04.pdf)\npdf.\n\n### Citations\n\nCitations:\n\n- Eric Vermote, Chris Justice, Ivan Csiszar, Jeff Eidenshink, Ranga Myneni,\n Frederic Baret, Ed Masuoka, Robert Wolfe, Martin Claverie and NOAA CDR\n Program (2014): NOAA Climate Data Record (CDR) of Normalized Difference\n Vegetation Index (NDVI), Version 4. \\[indicate subset used\\]. NOAA National\n Climatic Data Center.\n [doi:10.7289/V5PZ56R6](https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.ncdc:C00813)\n\n### DOIs\n\n- \u003chttps://doi.org/10.7289/V5PZ56R6\u003e\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('NOAA/CDR/AVHRR/NDVI/V5')\n .filter(ee.Filter.date('2018-05-01', '2018-06-01'));\nvar ndvi = dataset.select('NDVI');\nvar ndviVis = {\n min: -1000.0,\n max: 5000.0,\n palette: [\n 'ffffff', 'ce7e45', 'fcd163', 'c6ca02', '22cc04', '99b718', '207401',\n '012e01'\n ],\n};\nMap.setCenter(7.71, 17.93, 2);\nMap.addLayer(ndvi, ndviVis, 'NDVI');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NOAA/NOAA_CDR_AVHRR_NDVI_V5) \n[NOAA CDR AVHRR NDVI: Normalized Difference Vegetation Index, Version 5](/earth-engine/datasets/catalog/NOAA_CDR_AVHRR_NDVI_V5) \nThe NOAA Climate Data Record (CDR) of AVHRR Normalized Difference Vegetation Index (NDVI) contains gridded daily NDVI derived from the NOAA AVHRR Surface Reflectance product. It provides a measurement of surface vegetation coverage activity, gridded at a resolution of 0.05° and computed globally over land surfaces. Known issues with this ... \nNOAA/CDR/AVHRR/NDVI/V5, avhrr,cdr,daily,land,ndvi,noaa,vegetation-indices \n1981-06-24T00:00:00Z/2013-12-31T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.7289/V5PZ56R6](https://doi.org/https://www.ncei.noaa.gov/products/climate-data-records/normalized-difference-vegetation-index)\n- [https://doi.org/10.7289/V5PZ56R6](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NOAA_CDR_AVHRR_NDVI_V5)"]]
