Combined MODIS BRDF Albedo parameters 1 band 1 data from the MCD43C1 product across the globe, August 2, 2018.
View full-size imageThe Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43C1 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters 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.
MCD43C1 provides the three model weighting parameters (isotropic, volumetric, and geometric) used to derive the Albedo (MCD43C3) and BRDF (MCD43C4) products. Each model parameter is 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 30 parameter layers there are ancillary layers for quality, local solar noon, percent finer resolution inputs, snow cover, and uncertainty.
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.
Characteristic | Description |
---|---|
Collection | Combined MODIS |
DOI | 10.5067/MODIS/MCD43C1.006 |
File Size | ~243.71 MB |
Temporal Resolution | Daily |
Temporal Extent | 2000-02-16 to 2023-02-17 |
Spatial Extent | Global |
Coordinate System | Geographic Latitude and Longitude |
Datum | N/A |
File Format | HDF-EOS |
Geographic Dimensions | Global |
Characteristic | Description |
---|---|
Number of Science Dataset (SDS) Layers | 35 |
Columns/Rows | 7200 x 3600 |
Pixel Size | 5600 m |
SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
---|---|---|---|---|---|---|---|
BRDF_Albedo_Parameter1_Band1 | BRDF Albedo isotropic weight for band 1 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band2 | BRDF Albedo isotropic weight for band 2 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band3 | BRDF Albedo isotropic weight for band 3 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band4 | BRDF Albedo isotropic weight for band 4 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band5 | BRDF Albedo isotropic weight for band 5 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band6 | BRDF Albedo isotropic weight for band 6 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_Band7 | BRDF Albedo isotropic weight for band 7 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_vis | BRDF Albedo isotropic weight for vis broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_nir | BRDF Albedo isotropic weight for NIR broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter1_shortwave | BRDF Albedo isotropic weight for shortwave broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band1 | BRDF Albedo volumeteric weight for band 1 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band2 | BRDF Albedo volumeteric weight for band 2 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band3 | BRDF Albedo volumeteric weight for band 3 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band4 | BRDF Albedo volumeteric weight for band 4 | N/A | 16-bit unsigned integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band5 | BRDF Albedo volumeteric weight for band 5 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band6 | BRDF Albedo volumeteric weight for band 6 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_Band7 | BRDF Albedo volumeteric weight for band 7 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_vis | BRDF Albedo volumeteric weight for vis broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_nir | BRDF Albedo volumeteric weight for NIR broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter2_shortwave | BRDF Albedo volumeteric weight for shortwave broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band1 | BRDF Albedo geometric weight for band 1 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band2 | BRDF Albedo geometric weight for band 2 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band3 | BRDF Albedo geometric weight for band 3 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band4 | BRDF Albedo geometric weight for band 4 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band5 | BRDF Albedo geometric weight for band 5 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band6 | BRDF Albedo geometric weight for band 6 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_Band7 | BRDF Albedo geometric weight for band 7 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_vis | BRDF Albedo geometric weight for vis broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_nir | BRDF Albedo geometric weight for NIR broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Albedo_Parameter3_shortwave | BRDF Albedo geometric weight for shortwave broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
BRDF_Quality | BRDF and albedo quality informatiom | 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 | Percent finer resolution data which contributed to the CMG | Percent | 8-bit unsigned integer | 255 | N/A | 0 to 100 | N/A |
Percent_Snow | Percent of 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 |
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 |
The incorrect representation of the aerosol quantities (low average high) in the C6 MYD09 and MOD09 surface reflectance products may have impacted downstream products particularly over arid bright surfaces. This (and a few other issues) have been corrected for C6.1. Therefore users should avoid substantive use of the C6 MCD43 products and wait for the C6.1 products. In any event, users are always strongly encouraged to download and use the extensive QA data provided in MCD43A2, in addition to the briefer mandatory QAs provided as part of the MCD43A1, 3, and 4 products.
Corrections were implemented in Collection 6.1 reprocessing.
For complete information about the MCD43C1 known issues refer to the MODIS Land Quality Assessment website.