MCD19A3CMG v061

MODIS/Terra+Aqua Vegetation Index from MAIAC, Daily L3 Global 0.05 Deg CMG


PI: Alexei Lyapustin

The MAIAC data products have been released with the caveat that the reprocessing for the full mission is expected to continue through spring 2023.

Description

The MCD19A3CMG Version 6.1 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Multi-Angle Implementation of Atmospheric Correction (MAIAC) Vegetation Index Level 3 product produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG). The MCD19A3CMG product provides Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) at ground level in the absence of atmospheric scattering or absorption.

The MCD19A3CMG Vegetation Index data product contains the following Science Dataset (SDS) layers: NDVI, NDVI normalized to a fixed geometry of solar zenith angle at 45° and nadir view, gap-filled NDVI, EVI, and EVI normalized to a fixed geometry of solar zenith angle at 45° and nadir view. A low-resolution browse image is also included showing NDVI created using a composite of all available orbits.

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Characteristics

Improvements/Changes from Previous Versions

No previous versions.

Product Maturity

Validation at stage1 has been achieved for the MODIS AOD product. Further details regarding MODIS land product validation for MCD19 data products are available from the MODIS Land Team Validation site.

Collection and Granule

Collection

Characteristic Description
CollectionCombined MODIS
DOI10.5067/MODIS/MCD19A3CMG.061
File Size~30 MB
Temporal ResolutionDaily
Temporal Extent2000-02-24 to Present
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumN/A
File FormatHDF-EOS
Geographic DimensionsGlobal

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers5
Columns/Rows7200 x 3600
Pixel Size5600 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
NDVI Daily Normalized DifferenceVegetation Index at surface N/A 16-bit signed integer -28672 N/A 0 to 10000 0.0001
NDVI_n Daily NDVI normalized to SZA=45° and nadir view N/A 16-bit signed integer -28672 N/A 0 to 10000 0.0001
EVI Daily Enhanced VegetationIndex at surface N/A 16-bit signed integer -28672 N/A 0 to 10000 0.0001
EVI_n Daily EVI normalized to SZA=45° and nadir view N/A 16-bit signed integer -28672 N/A 0 to 10000 0.0001
NDVI_gapfill Gap-filled NDVI N/A 16-bit signed integer -28672 N/A 0 to 10000 0.0001

Product Quality

Product quality information is not available for MCD19A3CMG.

Known Issues

Known issues are described in Section 6 of the User Guide.


About the image

Combined MODIS gap-filled Normalized Difference Vegetation Index data from the MCD19A3CMG product across the globe, May 3, 2010.

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Documentation

User Guide
Algorithm Theoretical Basis Document (ATBD)

Using the Data

Access Data

Citation

DOI: 10.5067/MODIS/MCD19A3CMG.061