MODIS/Terra+Aqua BRDF/Albedo Model Parameters 16-Day L3 Global 1km SIN Grid V005

EDG Data Set Name	ShortName
MODIS/Terra+Aqua BRDF/Albedo Model Parameters 16-Day L3 Global 1km SIN Grid V005	MCD43B1

Unlike MODIS V004 MOD43, the V005 BRDF, Albedo, and NBAR products are known as MCD43. Whenever possible, both Terra and Aqua data are used in the generation of the new V005 products, providing the highest probability for quality input data and designating them as "MCD," meaning "Combined," products.

Version	Acquisition Range	Science Quality Status
004	July 4, 2002 - December 31, 2006	Validated Stage 1 from 07/04/2002
005	February 24, 2000 -	Validated Stage 1 from 02/24/2000

V005 MCD43B1 Changes (abbreviated Points of Interest below)

V005 MCD43B1 Science Data Sets (specifications for data layers)

V005 MCD43B1 Quality Information

MODIS Image

0...0.02...0.04...0.06...0.08...0.10

Data Set Characteristics

Area: ~10 degrees x 10 degrees lat/long
File Size: ~11 MB
Projection: Sinusoidal
Data Format: HDF-EOS
Dimensions: 1200 x 1200 rows/columns
Resolution: 1 kilometer
Science Data Sets (SDS HDF Layers): 11

The image above is a representation of the second of the three model parameters used to reconstruct surface anisotropic effects and thus correct directional reflectances to a common view geometry, or to compute integrated albedos. The colors describe the volumetric Ross Thick (fvol) weighting parameters for data acquired between January 17 and February 1, 2007 over the Adriatic Sea, including Italy, Croatia, Bosnia, Serbia, and Albania (h19v04).

V005 Change Points of Interest

1-km and 500-m products now available: the 1-km are averages of the 500-m values (if any of the input 500-m pixels were snow-covered the 1-km is flagged as snowy)

Quality information stored as a separate product (MCD43B2)

4D Science Data Sets simplified to 3D BIP structure

Number of Shape Indicators reduced from 8 to 4

Reduced file volume: internal compression

Phased production strategy: Produced every 8 days with 16-days of acquisition (ie., production period 2001001 includes acquisition between Days 001 and 016, production period 2001009 includes acquisition between Days 009 and 024)

Product Description

The MODerate-resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo Model Parameters product (MCD43B1) contains three-dimensional (3D) data sets providing users with weighting parameters for the anisotropy models used to derive the Albedo and NBAR products (MCD43B3 and MCD43B4). The models support the spatial relationship and parameter characterization best describing the differences in radiation due to the scattering (anisotropy) of each pixel, relying on multi-date, atmospherically corrected, cloud-cleared input data measured over 16-day periods.

The BRDF/Albedo Model Parameters can be used with a simple polynomial to easily estimate the black-sky albedo with good accuracy for any desired solar zenith angle. BRDF shape and properties are further described by the Shape Indicators included in the product.

Both Terra and Aqua data are used in the generation of this product, providing the highest probability for quality input data and designating it as an "MCD," meaning "Combined," product.

Version-5 MODIS/Terra+Aqua BRDF/Albedo products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts. Although there may be later improved versions, these data are ready for use in scientific publications.

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Retrieve the MCD43B1.5 MODIS product through the LP DAAC Data Pool
Via Search Tool: http://e4eil01u.ecs.nasa.gov:22000/WebAccess/drill?attrib=esdt&esdt=MCD43B1.5&group=MOTA
Via FTP Directory:

ftp://e4ftl01u.ecs.nasa.gov/MOTA/MCD43B1.005/Order Data through the EOS Data Gateway
(http://edcimswww.cr.usgs.gov/pub/imswelcome/)

EOS Data Gateway Search Tips

Data Center:	LPDAAC
Sensor:	MODIS
Dataset:	MODIS/Terra+Aqua BRDF/Albedo Model Parameters 16-Day L3 Global 1km SIN Grid V005
Spatial:	HORIZONTALTILENUMBER Max/Min VERTICALTILENUMBER Max/Min
Geographic Extent:	Type Lat/Long Range or Draw on Map
Temporal Extent:	2000-02-24 to present

Product Information

Product Description
http://modis-land.gsfc.nasa.gov/brdf.htm

User Guide
http://www-modis.bu.edu/brdf/userguide/index.html

Algorithm Theoretical Basis Document (ATBD)
http://modis.gsfc.nasa.gov/data/atbd/atbd_mod09.pdf

MODIS Standard Data Products Catalog
http://modis.gsfc.nasa.gov/data/dataprod/index.php

EOS Data Products Handbook Volume 1 (2000)
http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/data_products/vol1.php

Contact Information

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URL: http://LPDAAC.usgs.gov/modis/MCD43B1v5.asp
Technical Contact: LPDAAC@eos.nasa.gov
Last Update: Wednesday, September 26, 2007
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