Combined MODIS nadir reflectance bands 1-4-3 data from the MCD43A4 product over western United States June 7 - 22, 2020.
View full-size imageThe 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.
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 MCD43A4 provides NBAR and simplified mandatory quality layers for MODIS bands 1 through 7. Essential quality information provided in the corresponding MCD43A2 data file should be consulted when using this product.
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/MCD43A4.061 |
| File Size | ~21 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 | 14 |
| 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 |
| Nadir_Reflectance_Band1 | NBAR at local solar noon for Band 1 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band2 | NBAR at local solar noon for Band 2 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band3 | NBAR at local solar noon for Band 3 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band4 | NBAR at local solar noon for Band 4 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band5 | NBAR at local solar noon for Band 5 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band6 | NBAR at local solar noon for Band 6 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Nadir_Reflectance_Band7 | NBAR at local solar noon for Band 7 | N/A | 16-bit signed integer | 32767 | N/A | 0 to 32766 | 0.0001 |
| Value | Description |
|---|---|
| 0 | Processed, good quality (full BRDF inversions) |
| 1 | Processed, see other QA (magnitude BRDF inversions) |
| 255 | Fill Value |
For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.