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EDG Data Set Name	Granule Shortname
MODIS/Terra+Aqua Burned Area Monthly L3 Global 500m SIN Grid V005	MCD45A1

Version	Acquisition Range	Science Quality Status
005	April 1, 2000 -	Provisional

V005 MCD45A1 Science Data Sets
V005 MCD45A1 Quality Information

The above image is the "Burn Date" Science Data Set layer, which provides a thematic depiction of the burned area pixels. The image date is October 1, 2007. Red color indicates the approximate Julian day of burning; the dates spans from September 25, 2007 and November 6, 2007. Orange color indicates either areas that are snow-covered or areas with high aerosol. The blue and cyan colors relate to external and internal water bodies. The larger thistle-colored background indicates unburned areas.

Data Characteristics
Single Gridded Tile Area: ~1200 x 1200 km (~10° x 10° at the equator)
Image Dimensions: 2400 x 2400 rows/columns
File Size: 0.25 – 8.25 MB
Resolution: 500 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Science Data Sets (HDF SDS Layers): 8

Product Description
MCD45A1 is a monthly Level-3 gridded 500-meter product, which contains burning and quality information on a per-pixel basis.  Produced from both the Terra and Aqua MODIS-derived daily surface reflectance inputs, the algorithm analyzes the daily surface reflectance dynamics to locate rapid changes, uses that information to detect the approximate date of burning, and maps the spatial extent of recent fires only.  It provides varied quality assessment information and a single summary quality assessment score for each pixel.

The MCD45A1 algorithm improves on previous methods by using a bidirectional reflectance distribution function (BRDF) model-based change detection approach to handle angular variations in the data.  It further uses a statistical measure to identify change probability from a previously observed state.  A monthly MCD45A1 product is based on three months of atmospherically and geometrically corrected, cloud-screened daily reflectance data.

MCD45A1 product access through the LP DAAC Data Pool
Via Search Tool: http://e4eil01u.ecs.nasa.gov:22000/WebAccess/drill?attrib=esdt&esdt=MCD45A1.5&group=MOTA
Via FTP Directory: ftp://e4ftl01u.ecs.nasa.gov/MOTA/MCD45A1.005/

Product Information
Product Description
http://modis-fire.umd.edu/MCD45A1.asp

User Guide
http://modis-fire.umd.edu/documents/MODIS_Burned_Area_Users_Guide_1.1.pdf

Algorithm Theoretical Basis Document
http://modis.gsfc.nasa.gov/data/atbd/atbd_mod14.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

LP DAAC User Services U.S. Geological Survey (USGS) Earth Resources Observation and Science Center (EROS) 47914 252nd Street Sioux Falls, SD 57198-0001
Phone:	605-594-6116
Toll Free:	866-573-3222
	866-LPE-DAAC
Fax:	605-594-6963
Email:	LPDAAC@eos.nasa.gov
Web:	http://LPDAAC.usgs.gov

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