Short Name:

MCD43A4

MODIS/Terra+Aqua BRDF/Albedo Nadir BRDF-Adjusted Ref Daily L3 Global - 500m V061

The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A4 Version 6.1 Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) dataset is produced daily using 16 days of Terra and Aqua MODIS data at 500 meter (m) resolution. The view angle effects are removed from the directional reflectances, resulting in a stable and consistent NBAR product. Data are temporally weighted to the ninth day which is reflected in the Julian date in the file name. The MCD43A4 provides NBAR and quality layers for MODIS bands 1 through 7. The MODIS BRDF/ALBEDO products have achieved stage 3 (https://modis-land.gsfc.nasa.gov/MODLAND_val.html) validation. Improvements/Changes from Previous Versions * The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017. * A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Overview Download Data Services Tools Citation Information Documentation Additional Information

Science Keywords:

Spatial Extent:

Bounding Rectangle:

N: 90.0 S: -90.0 E: 180.0 W: -180.0

Data Format(s):

Distribution: HDF-EOS2

Temporal Extent:

2000-02-16 to now

Platform(s):

Terra, Aqua

Data Center(s):

LP DAAC

Instrument(s):

MODIS

Version:

061

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Title: MODIS/Terra+Aqua BRDF/Albedo Nadir BRDF Adjusted Ref Daily L3 Global - 500m V061
Creator: Crystal Schaaf, Zhuosen Wang
Publisher: NASA EOSDIS Land Processes DAAC
Release Date: 2021-02-22T00:00:00.000Z
Other Citation Details: The DOI landing page provides citations in APA and Chicago styles.
Linkage: https://doi.org/10.5067/MODIS/MCD43A4.061

USER'S GUIDE: https://www.umb.edu/spectralmass/terra_aqua_modis/v006, The technical information in the User's Guide enables users to interpret and use the data products.
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD): https://lpdaac.usgs.gov/documents/97/MCD43_ATBD.pdf, The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products.
GENERAL DOCUMENTATION: https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MCD43A4, The File Specification provides a description of the product file including Scientific Data Sets and their attributes.

Purpose
Science Research
Version Description
Collection Version 6.1 Processing and Reprocessing
DOI
10.5067/MODIS/MCD43A4.061

https://doi.org
Search for granules from this collection

Data Dates

Creation	2010-10-13T07:39:33.626Z
Last Revision	2015-09-30T10:46:36.220Z

Processing Level

Sensor Measurements

Quality

Collection Progress
Active
Access Constraints

None

Related URLs

Additional Attributes

Name: ALBEDOFILEID STRING Description: ID of the kernel albedo table used.
Name: BRDFCODEID STRING Description: ID of the BRDF/albedo code used.
Name: HORIZONTALTILENUMBER INT Description: Horizontal tile number of a grid, which increases from left to right.
Name: AVERAGENUMBEROBS STRING Description: Average number of observations in pixels and tiles that are to be processed.
Name: PERCENTLANDINTILE STRING Description: Percentage of land pixels in tile.
Name: BRDFDATABASEVERSION STRING Description: ID of ancillary BRDF database used.
Name: PERCENTNEWBRDFS STRING Description: Percentage of pixels and bands in tile with new full BRDF inversions.
Name: PERCENTSHAPEFIXEDBRDFS STRING Description: Percentage of pixels and bands in tile with BRDFs derived from the ancillary database BRDF fitted to the available observations.
Name: PERCENTSUBSTITUTEBRDFS STRING Description: Percentage of pixels and bands in tile with BRDFs taken from the ancillary BRDF database.
Name: QAPERCENTGOODQUALITY INT Description: Percent of pixels with good quality
Name: QAPERCENTNOTPRODUCEDCLOUD INT Description: Percent of pixels under cloud
Name: QAPERCENTNOTPRODUCEDOTHER INT Description: Percent of pixels not produced due to some reason other than cloud
Name: QAPERCENTOTHERQUALITY INT Description: Percent of pixels with not so good quality
Name: VERTICALTILENUMBER INT Description: Vertical tile number of a grid, which increases from top to bottom.
Name: PERCENTPROCESSEDINTILE STRING Description: Percentage of pixels and bands in tile that were processed.
Name: SETUPFILEID STRING Description: ID of the BRDF/albedo model definition file used.
Name: PROCESSVERSION STRING Description: Version of the process software that generated the product.
Name: TileID INT Description: MODIS Land tile identification number which represents a geographical area on the surface of the Earth bounded by latitude and longitude coordinates.
Name: identifier_product_doi STRING Description: Digital object identifier that uniquely identifies this data product
Name: identifier_product_doi_authority STRING Description: URL of the digital object identifier resolving authority

Projects

Project Short Name	Campaigns	Project Dates
Terra	Terra	No dates provided.
Aqua	Aqua	No dates provided.

Coverage Type	Zone Identifier	Geometry	Granule Representation
HORIZONTAL	MODIS Sinusoidal Tiling System	CARTESIAN	GEODETIC

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Resolutions
- Gridded Resolution 1
  X Dimension
  500.0 Meters
  Y Dimension
  500.0 Meters

Tiling Identification Systems

System Name	Coordinate 1 Min	Coordinate 1 Max	Coordinate 2 Min	Coordinate 2 Max
MODIS Tile SIN	0.0	35.0	0.0	17.0

Location Keywords

- GEOGRAPHIC REGION
- GLOBAL

LP DAAC
ARCHIVER

Land Processes Distributed Active Archive Center
- U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
  Sioux Falls, Maryland 57198
M-F, 8 a.m. to 4 p.m. Central Time

605-594-6116

866-573-3222

Email
Contact Details
LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/

Home Page
NASA/GSFC/SED/ESD/TISL/MODAPS
PROCESSOR

MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
- NASA/GSFC Code 922
  GREENBELT, Maryland 20771
301-614-5515

Email
Contact Details
Contact for data content concerns
https://modaps.modaps.eosdis.nasa.gov/

Home Page

LP DAAC User Services
User Services

LP DAAC User Services
LP DAAC
- U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
  Sioux Falls, South Dakota 57198
M-F, 8 a.m. to 4 p.m. Central Time

605-594-6116

866-573-3222

Email
Contact Details
LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/

Home Page

Metadata Dates

Creation	2019-06-20T17:01:00.000Z
Last Revision	2021-06-17T18:59:00.000Z

File Distribution Information

Format: HDF-EOS2

Format Type: Native

Format Description: Hierarchical Data Format - Earth Observing System Version 2

Media: HTTP

Average File Size: 21.0 MB

Total Collection File Size Begin Date: 2000-02-16T00:00:00.000Z

CMR Search

MODIS/Terra+Aqua BRDF/Albedo Nadir BRDF-Adjusted Ref Daily L3 Global - 500m V061

Collection Information

Data Identification

Data Dates

Related URLs

Other Descriptive Keywords

Additional Attributes

Acquisition Information

Projects

Temporal Information

Spatial Information

Resolution and Coordinate System

Horizontal Data Resolution

Gridded Resolutions

Gridded Resolution 1

Tiling Identification Systems

Location Keywords

Data Centers

LP DAAC

Land Processes Distributed Active Archive Center

NASA/GSFC/SED/ESD/TISL/MODAPS

MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Contacts

LP DAAC User Services

LP DAAC User Services

Metadata Dates

Archive And Distribution Information

File Distribution Information