NOAA CDR AVHRR LAI FAPAR: Leaf Area Index and Fraction of Absorbed Photosynthetically Active Radiation, Version 4

NOAA/CDR/AVHRR/LAI_FAPAR/V4
Dataset Availability
1981-06-24T00:00:00 - Present
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NOAA/CDR/AVHRR/LAI_FAPAR/V4")
Tags
land daily lai fapar noaa cdr avhrr

Description

The NOAA Climate Data Record (CDR) of AVHRR Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) dataset contains dervied values that characterize the canopy and photosynthetic activity of plants. This dataset is derived from the NOAA AVHRR Surface Reflectance product and is gridded at a resolution of 0.05° on a daily basis. The values are computed globally over land surfaces, but not over bare or very sparsely vegetated areas, permanent ice or snow, permanent wetland, urban areas, or water bodies.

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
See technical note from the data provider.

Bands

Resolution
0.05 arc degrees

Bands

Name Min Max Scale Description
LAI 0* 6205* 0.001

Leaf area index

FAPAR 0* 896* 0.001

Fraction of absorbed photosynthetic active radiation

QA

Quality control bit flags

* 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:
  • Martin Claverie, Eric Vermote, and NOAA CDR Program (2014): NOAA Climate Data Record (CDR) of Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), Version 4. [indicate subset used]. NOAA National Climatic Data Center. doi:10.7289/V5M043BX

DOI(s)

Explore in Earth Engine

var dataset = ee.ImageCollection('NOAA/CDR/AVHRR/LAI_FAPAR/V4')
                  .filter(ee.Filter.date('2018-02-01', '2018-03-01'));
var leafAreaIndex = dataset.select('LAI');
var leafAreaIndexVis = {
  min: 0.0,
  max: 4000.0,
  palette: ['3b0200', '977705', 'ca9f06', 'ffca09', '006a03', '003b02'],
};
Map.setCenter(20, 24.5, 2);
Map.addLayer(leafAreaIndex, leafAreaIndexVis, 'Leaf Area Index');