VNP15A2H: LAI/FPAR 8-Day L4 Global 500m SIN Grid

Dataset Availability: 2012-01-17T00:00:00Z–2024-12-10T00:00:00Z
Dataset Provider: NASA LP DAAC at the USGS EROS Center
Earth Engine Snippet: ee.ImageCollection("NASA/VIIRS/002/VNP15A2H")

Cadence: 8 Days
Tags: land nasa noaa surface viirs

Description

The Visible Infrared Imaging Radiometer Suite (VIIRS) Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) Version 1 data product provides information about the vegetative canopy layer at 500 meter resolution (VNP15A2H). The VIIRS sensor is located onboard the NOAA/NASA joint Suomi National Polar-Orbiting Partnership (Suomi NPP) satellite. LAI is an index that quantifies the one-sided leaf area of a canopy, while FPAR is the fraction of incoming solar energy absorbed through photosynthesis at 400 to 700 nanometers. This product is intentionally designed after the Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) LAI/FPAR operational algorithm to promote the continuity of the Earth Observation System (EOS) mission.

Documentation:

Bands

Resolution
500 meters

Bands

Name	Units	Description
`Fpar`		Fraction of Photosynthetically Active Radiation.
`FparExtra_QC`		Pass-through Quality Control (QC) for FPAR
Bitmask for FparExtra_QC Bits 0-1: Cloud detection and confidence 0: Confident clear 1: Probably clear 2: Probably cloudy 3: Confident cloudy Bit 2: Cloud shadow 0: No cloud shadow 1: Shadow Bit 3: Thin cirrus 0: No 1: Yes Bits 4-5: Aerosol quantity 0: Climatology 1: Low 2: Average 3: High Bit 6: Snow/Ice 0: No 1: Yes
`FparLai_QC`		Quality for LAI and FPAR
Bitmask for FparLai_QC Bits 0-2: SCF_QC 0: Main (RT) method used, best result possible (no saturation) 1: Main (RT) method used with saturation. Good, very usable. 2: Main (RT) method failed due to bad geometry, empirical algorithm used 3: Main (RT) method failed due to problems other than geometry, empirical algorithm used 4: Pixel not produced at all, value couldn't be retrieved Bit 3: DeadDetector 0: Both red and NIR detectors are fine 1: At least one band has dead detector Bits 4-7: BiomeType 0: Water 1: Grasses/cereal crops 2: Shrubs 3: Broadleaf crops 4: Savanna 5: Evergreen broadleaf forest 6: Deciduous broadleaf forest 7: Evergreen needleleaf forest 8: Deciduous needleleaf forest 9: Non-vegetated 10: Urban 11: Unclassified 12: Filled Value
`FparStdDev`		Standard deviation of FPAR
`Lai`	Area fraction	Leaf Area Index
`LaiStdDev`	Area fraction	Standard deviation for LAI

Terms of Use

Terms of Use

LP DAAC NASA data are freely accessible; however, when an author publishes these data or works based on the data, it is requested that the author cite the datasets within the text of the publication and include a reference to them in the reference list.

Citations

Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

DOIs

https://doi.org/10.5067/VIIRS/VNP15A2H.002

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/VIIRS/002/VNP15A2H')
                  .filter(ee.Filter.date('2022-11-01', '2022-12-01'));

var visualization = {
  bands: ['Lai'],
  min: [0],
  max: [4],
  palette: [
    'a50026',
    'd73027',
    'f46d43',
    'fdae61',
    'fee08b',
    'ffffbf',
    'd9ef8b',
    'a6d96a',
    '66bd63',
    '1a9850',
    '006837',
  ]
};
Map.setCenter(41.2, 38.84, 3);
Map.addLayer(dataset, visualization, 'Leaf Area Index (LAI)');

Open in Code Editor

VNP15A2H: LAI/FPAR 8-Day L4 Global 500m SIN Grid

NASA/VIIRS/002/VNP15A2H, land,nasa,noaa,surface,viirs

2012-01-17T00:00:00Z/2024-12-10T00:00:00Z

Google Earth Engine

https://developers.google.com/earth-engine/datasets

https://doi.org/10.5067/VIIRS/VNP15A2H.002