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).
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| Spatial Extent: | Bounding Rectangle: N: 90.0 S: -90.0 E: 180.0 W: -180.0 |
Data Format(s): | Distribution: HDF-EOS2 |
| Temporal Extent: | Platform(s): | Terra, Aqua | |
| Data Center(s): | LP DAAC | Instrument(s): | MODIS |
| Version: | 061 | ||
- 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
10.5067/MODIS/MCD43A4.061
https://doi.org
- 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.
- SCIENCE DATA PRODUCT VALIDATION: https://modis-land.gsfc.nasa.gov/MODLAND_val.html, Validation at stage 3 has been achieved for all MODIS BRDF/Albedo products.
- SCIENCE DATA PRODUCT VALIDATION: https://modis-land.gsfc.nasa.gov/ValStatus.php?ProductID=MCD43, Further details regarding MODIS land product validation for the MCD43 data products are available from the MODIS Land Team Validation site.
Collection Information
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Purpose
Science Research -
Version Description
Collection Version 6.1 Processing and Reprocessing - Search for granules from this collection
Data Identification
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Processing Level
3
Sensor Measurements
- Quality
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Collection Progress
Active
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Access Constraints
None
Data Dates
| Creation | |
| Last Revision |
Related URLs
Other Descriptive Keywords
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
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
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| Terra |
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No dates provided. |
| Aqua |
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No dates provided. |
Temporal Information
Spatial Information
Gridded Resolutions
Gridded Resolution 1
X Dimension500.0 Meters
Y Dimension500.0 Meters
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | MODIS Sinusoidal Tiling System | CARTESIAN | GEODETIC |
Resolution and Coordinate System
Horizontal Data Resolution
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
Data Centers
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LP DAAC
ARCHIVERLand Processes Distributed Active Archive Center
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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
Contact DetailsLP 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
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NASA/GSFC/SED/ESD/TISL/MODAPS
PROCESSORMODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
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NASA/GSFC Code 922
GREENBELT, Maryland 20771
301-614-5515
Contact DetailsContact for data content concerns
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Data Contacts
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LP DAAC User Services
User ServicesLP 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
Contact DetailsLP 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
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Archive And Distribution Information
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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
File Distribution Information
There is no direct distribution information for this collection.