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MCD15A2H V006

10.5067/MODIS/MCD15A2H.006
MODIS/Terra+Aqua Leaf Area Index/FPAR 8-Day L4 Global 500 m SIN Grid
MCD15A2H

The MCD15A2H version 6 MODIS Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), and Leaf Area Index (LAI) product is an 8-day composite dataset with 500 meter pixel size.  The algorithm chooses the “best” pixel available from all the acquisitions of both MODIS sensors located on NASA’s Terra and Aqua satellites from within the 8-day period.
LAI is defined as the one-sided green leaf area per unit ground area in broadleaf canopies and as one-half the total needle surface area per unit ground area in coniferous canopies.  FPAR is defined as the fraction of incident photosynthetically active radiation (400-700nm) absorbed by the green elements of a vegetation canopy.
The LAI product has attained stage 2 validation and the FPAR product has attained stage 1 Validation.
Improvements/Changes from Previous Versions

  • The version 6 product uses the daily L2G-lite surface reflectance as input as opposed to MODAGAGG used in C5
  • Products are generated at native resolution of 500 meters rather than the 1000 meters of the version 5.
  • Version 6 uses an improved multi-year land cover product.

Collection

Characteristic

Description

Temporal Granularity

8-day

Temporal Extent

July 2002 - Present

Spatial Extent

Global

File Size

~0.37 MB

Coordinate System

Sinusoidal

Datum

N/A

File Format

HDF-EOS

Geographic Dimensions

1200 km x 1200 km

 

Granule

Characteristic

Description

Number of Science Dataset (SDS) Layers

6

Rows/Columns

2400 cols x 2400 rows

Pixel Size

500 m

 

Data Layer Characteristics

SDS Layer Name

Description

Units

Data Type

Fill Value

Valid Range

Scaling Factor

Additional Offset

Fpar_500m

Fraction of photosynthetically active radiation

Dimensionless

8-bit unsigned integer

249 - 255

0 to 100

0.01

N/A

Lai_500m

Leaf area index

Dimensionless

8-bit unsigned integer

249 - 255

0 to 100

0.1

N/A

FparLai_QC

Quality for Lai and Fpar

Class-flag

8-bit unsigned integer

255

0 to 254

N/A

N/A

FparExtra_QC

Extra detail Quality for Lai and Fpar

Class-flag

8-bit unsigned integer

255

0 to 254

N/A

-65.0

FparStdDev_500m

Standard deviation of Fpar

Dimensionless

8-bit unsigned integer

248 - 255

0 to 100

0.01

N/A

LaiStdDev_500m

Standard deviation for Lai

Dimensionless

8-bit unsigned integer

248 - 255

0 to 100

0.1

N/A

 

Product Quality
The QC layer is bit encoded. We recommend the unpack_sds_bits executable from the LDOPE tools to unpack these layers.
The QC bitmap for the QC layer is given in the User Guide on pages 8 and 9.
 

Known Issues
For complete information about the MCD15A2H known issues please refer to the MODIS Land Quality Assessment website.

MCD15A2H V006 image

MCD15A2H. Acquired June 18, 2011. Tile H11V04. North Central US.

PI Name: 
Ranga Myneni
Other Tools: 
Decommissioned: 
False