Home	About	Products	Data Tools	Order Data	News	Help/Edu	Links	Contact Us

EDG Data Set Name	Granule Shortname
MODIS/Terra+Aqua Nadir BRDF-Adjusted Reflectance 16-Day L3 Global 0.05Deg CMG	MCD43C3

Version	Acquisition Range	Science Quality Status
V004	July 4 2002 (2002185)	Validated

Global Nadir BRDF-Adjusted Reflectance for February 2, 2004.

Data Set Characteristics
Area = Global
Image Dimensions = 3 (3600x7200x7 row/column/band)
Average File Size = ~460 MB
Resolution = 0.05 degree (~5 km)
Projection = Latitude/Longitude Grid
Data Format = HDF-EOS
Science Data Sets (SDS) = 3

Product Description
The 16-day 0.05 degree global Nadir BRDF-Adjusted Reflectance (NBAR) product (MCD43C3) is a Level 3 Climate Modeling Grid that provides two measures of nadir surface reflectance: one at the mean solar zenith angle of Terra overpasses during the 16-day period and the other at the mean solar zenith angle of the Aqua overpasses. These measures are derived averages that are computed from the 16-day 1-km global NBAR (MCD43B4) product over all land surfaces. The 1-km global NBAR is computed by using the Bi-directional Reflectance Distribution Function (BRDF), which describes the characteristic anisotropy of the land surface.  The MODIS BRDF parameters are modeled by inverting multi-date, multi-angular, cloud-free, atmospherically corrected surface reflectance observations acquired by MODIS over a 16-day period.

MCD products are generated using a combination of Terra and Aqua acquisitions to optimize data quality.

NOTE: These products are validated, meaning that product uncertainties are well defined over a range of representative conditions. Although there may be later improved versions, these data are ready for use in scientific publications.

SDS	UNITS	DATA TYPE -bit	FILL VALUE	VALID RANGE	SCALING FACTOR	DIMENSIONS
Nadir_Reflectance	Reflectance	16-bit signed integer	32767	0 - 32766	0.0001	1D X-Dim 2D Y-Dim 3D#Land Bands
*Nadir_Reflectance _Quality	Concatenated Flags	32-bit unsigned integer	4294967295	0-4294967294	na	1D X-Dim 2D Y-Dim 3D # QC Words

*MODIS BRDF/Albedo QA Science Data Sets

View a Version Formatted for Printing

Order These Data through the EOS Data Gateway

EOS Data Gateway Search Tips

Source:	Terra or Aqua
Sensor:	MODIS
Dataset:	MODIS/Terra+Aqua Nadir BRDF-Adjusted Reflectance 16-Day L3 Global 0.05Deg CMG
Geographic Extent:	Global
Temporal Extent:	2002-07-04 to present

Product Information

Product Description (http://landval.gsfc.nasa.gov/MODLAND/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/land_atbd.php)

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

EOS Data Products Handbook Volume 2 (2000) (http://eospso.gsfc.nasa.gov/eos_homepage/for_scientists/data_products/vol2.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

This site is hosted by the USGS - NASA Distributed Active Archive Center U.S. Government: Public Information Exchange Resource NASA: Privacy Policy and Important Notices USGS: Privacy Statement, Disclaimer, Accessibility, FOIA DOI: Privacy Statement, Privacy Disclaimer, No FEAR Act, FOIA, Performance Plan, Children's Privacy URL: http://LPDAAC.usgs.gov/modis/mcd43c4v4.asp Technical Contact: LPDAAC@eos.nasa.gov Last Update: Monday, March 12, 2007 Download Adobe Acrobat Reader