Combined MODIS BRDF Albedo Parameters 1-4-3 data from the MCD43A1 product over western United States June 7 - 22, 2020.
View full-size imageThe Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A1 Version 6.1 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset is produced daily using 16 days of Terra and Aqua MODIS data at 500 meter (m) resolution. Data are temporally weighted to the ninth day of the retrieval period which is reflected in the Julian date in the file name. MCD43A1 provides the three model weighting parameters (isotropic, volumetric, and geometric) used to derive the Albedo (MCD43A3) and Nadir BRDF-Adjusted Reflectance (NBAR) (MCD43A4) products.
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.
The MCD43A1 provides the three model weighting parameters for MODIS spectral bands 1 through 7 as well as the visible, near infrared (NIR), and shortwave bands. Along with the three-dimensional parameter layers for these bands are the simplified mandatory quality layers for each of the 10 bands. Essential quality information provided in the corresponding MCD43A2 data file should be consulted when using this product.
Validation at stage 4 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/MCD43A1.061 |
| File Size | ~55 MB |
| Temporal Resolution | Daily |
| Temporal Extent | 2000-02-16 to Present |
| Spatial Extent | Global |
| Coordinate System | Sinusoidal |
| Datum | N/A |
| File Format | HDF-EOS |
| Geographic Dimensions | ~1200 km x 1200 km |
| Characteristic | Description |
|---|---|
| Number of Science Dataset (SDS) Layers | 20 |
| Columns/Rows | 2400 x 2400 |
| Pixel Size | 500 m |
| SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|---|
| BRDF_Albedo_Band_Mandatory_Quality_Band1 | BRDF Albedo Mandatory Quality for Band 1 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band2 | BRDF Albedo Mandatory Quality for Band 2 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band3 | BRDF Albedo Mandatory Quality for Band 3 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band4 | BRDF Albedo Mandatory Quality for Band 4 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band5 | BRDF Albedo Mandatory Quality for Band 5 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band6 | BRDF Albedo Mandatory Quality for Band 6 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_Band7 | BRDF Albedo Mandatory Quality for Band 7 | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_vis | BRDF Albedo Mandatory Quality for vis broadband | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_nir | BRDF Albedo Mandatory Quality for NIR broadband | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Band_Mandatory_Quality_shortwave | BRDF Albedo Mandatory Quality for shortwave broadband | Bit Field | 8-bit unsigned integer | 255 | N/A | 0 to 254 | N/A |
| BRDF_Albedo_Parameters_Band1 | 3D Parameter (iso, vol, geo) for Band 1 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band2 | 3D Parameter (iso, vol, geo) for Band 2 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band3 | 3D Parameter (iso, vol, geo) for Band 3 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band4 | 3D Parameter (iso, vol, geo) for Band 4 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band5 | 3D Parameter (iso, vol, geo) for Band 5 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band6 | 3D Parameter (iso, vol, geo) for Band 6 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_Band7 | 3D Parameter (iso, vol, geo) for Band 7 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_vis | 3D Parameter (iso, vol, geo) for vis broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_nir | 3D Parameter (iso, vol, geo) for NIR broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| BRDF_Albedo_Parameters_shortwave | 3D Parameter (iso, vol, geo) for shortwave broadband | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.001 |
| Value | Description |
|---|---|
| 0 | Processed, good quality (full BRDF inversions) |
| 1 | Processed, see other QA (magnitude BRDF inversions) |
| 2 | Processed, good quality (full BRDF inversions, only Band 6 is fill value due to non-functional or noisy detectors) |
| 3 | Processed, see other QA (magnitude BRDF inversions, only Band 6 is fill value due to non-functional or noisy detectors) |
| 4 | Processed, good quality (full BRDF inversions, only Band 5 is fill value due to non-functional or noisy detectors) |
| 5 | Processed, see other QA (magnitude BRDF inversions, only Band 5 is fill value due to non-functional or noisy detectors) |
| 6 | Processed, good quality (full BRDF inversions, both Band 5 and Band 6 are fill value due to non-functional or noisy detectors) |
| 7 | Processed, see other QA (magnitude BRDF inversions, both Band 5 and Band 6 are fill value due to non-functional or noisy detectors) |
| 255 | Fill Value |
For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.