MCD43C3 v061

MODIS/Terra+Aqua BRDF/Albedo Albedo Daily L3 Global 0.05 Deg CMG


PI: Crystal Schaaf

Historic processing continues for MODIS V6.1 data products for years 2011 through 2018. It is the intent to complete processing of the archive by the end of the 2021 calendar year. The V6 land products will be available until the V6.1 processing is completed, upon which time the MODIS V6 products will be decommissioned.

Description

The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43C3 Version 6.1 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Albedo dataset is produced daily using 16 days of Terra and Aqua MODIS data in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG). Data are temporally weighted to the ninth day of the retrieval period which is reflected in the Julian date in the file name. This CMG product covers the entire globe for use in climate simulation models.

Users are urged to use the band specific quality flags to isolate the highest quality full inversion results for their own science applications as described in the User Guide.

MCD43C3 provides black-sky albedo (directional hemispherical reflectance) and white-sky albedo (bihemispherical reflectance) at local solar noon. Black-sky albedo and white-sky albedo values are available as a separate layer for MODIS spectral bands 1 through 7 as well as the visible, near infrared (NIR), and shortwave bands. Along with the 20 albedo layers are ancillary layers for quality, local solar noon, percent finer resolution inputs, snow cover, and uncertainty.

read more

Characteristics

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).

Product Maturity

Validation at stage 3 has been achieved for all MODIS BRDF/Albedo products. Further details regarding MODIS land product validation for the MCD43 data products are available from the MODIS Land Team Validation site.

Collection and Granule

Collection

Characteristic Description
CollectionCombined MODIS
DOI10.5067/MODIS/MCD43C3.061
File Size~181 MB
Temporal ResolutionDaily
Temporal Extent2000-02-16 to Present
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumN/A
File FormatHDF-EOS
Geographic DimensionsGlobal

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers25
Columns/Rows7200 x 3600
Pixel Size5600 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
Albedo_BSA_Band1 Black-sky albedo for MODIS land band 1 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band2 Black-sky albedo for MODIS land band 2 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band3 Black-sky albedo for MODIS land band 3 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band4 Black-sky albedo for MODIS land band 4 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band5 Black-sky albedo for MODIS land band 5 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band6 Black-sky albedo for MODIS land band 6 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_Band7 Black-sky albedo for MODIS land band 7 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_vis Black-sky albedo for MODIS vis broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_nir Black-sky albedo for MODIS NIR broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_BSA_shortwave Black-sky albedo for MODIS shortwave broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band1 White-sky albedo for MODIS land band 1 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band2 White-sky albedo for MODIS land band 2 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band3 White-sky albedo for MODIS land band 3 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band4 White-sky albedo for MODIS land band 4 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band5 White-sky albedo for MODIS land band 5 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band6 White-sky albedo for MODIS land band 6 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_Band7 White-sky albedo for MODIS land band 7 N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_vis White-sky albedo for MODIS vis broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_nir White-sky albedo for MODIS NIR broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_WSA_shortwave White-sky albedo for MODIS shortwave broadband N/A 16-bit signed integer 32767 N/A 0 to 32766 0.001
Albedo_Quality Global albedo quality N/A 8-bit unsigned integer 255 N/A 0 to 254 N/A
Local_Solar_Noon Local solar noon zenith angle Degree 8-bit unsigned integer 255 N/A 0 to 90 N/A
Percent_Inputs Processed finer resolution data that contributed to this CMG pixel Percent 8-bit unsigned integer 255 N/A 0 to 100 N/A
Percent_Snow Underlying data flagged as snow Percent 8-bit unsigned integer 255 N/A 0 to 100 N/A
BRDF_Albedo_Uncertainty BRDF inversion information N/A 16-bit unsigned integer 32767 N/A 0 to 32766 0.001

Quality bit index

Value Description
0 Best quality, 100% with full inversions
1 Good quality, 75% or more with best full inversions and 90% or more with full inversions
2 Relative good quality, 75% or more with full inversions
3 Mixed, 75% or less full inversions and 25% or less fill values
4 All magnitude inversions or 50% or less fill values
5 50% or more fill values
255 Fill Value

Known Issues

For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.


About the image

Combined MODIS BRDF Albedo black-sky albedo band 1 data from the MCD43C3 product across the globe, August 2 - 17, 2020.

View full-size image

Documentation

User Guide
Algorithm Theoretical Basis Document (ATBD)
File Specification

Using the Data

Access Data

Citation

DOI: 10.5067/MODIS/MCD43C3.061