Combined MODIS Bidirectional Reflectance Factor Band 1-4-3 data from the MCD19A1CMGL product across the globe, July 9, 2009.
View full-size imageThe MCD19A1CMGL Version 6.1 data product is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Multi-Angle Implementation of Atmospheric Correction (MAIAC) Surface Reflectance Level 3 (Bands 1-7) product produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG). The MCD19A1CMGL product is corrected for atmospheric gases and aerosols using a new MAIAC algorithm that is based on a time series analysis and a combination of pixel- and image-based processing. The MODIS MAIAC products provide an estimate of the surface spectral reflectance, also referred to as Bidirectional Reflectance Factor (BRF), as it would be measured at ground-level in the absence of atmospheric scattering or absorption. The Surface Reflectance dataset includes BRF, BRF normalized to a fixed geometry of solar zenith angle at 45° and nadir view, and Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) normalized to the nadir view and local sun angle at 1:30 pm.
The MCD19A1CMGL MAIAC Surface Reflectance product for land bands includes 25 Science Dataset (SDS) layers: BRF for bands 1-7, BRF normalized to a fixed geometry for bands 1-7, NBAR for bands 1-7, Quality Assessment (QA) bits, cosine of solar zenith angle, cosine of view zenith angle, and relative azimuth angle. A low-resolution browse is also included.
No previous versions.
Validation at stage1 has been achieved for the MODIS Surface Reflectance product. Further details regarding MODIS land product validation for MCD19 data products are available from the MODIS Land Team Validation site.
Characteristic | Description |
---|---|
Collection | Combined MODIS |
DOI | 10.5067/MODIS/MCD19A1CMGL.061 |
File Size | ~90 MB |
Temporal Resolution | Daily |
Temporal Extent | 2000-02-24 to Present |
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 | 25 |
Columns/Rows | 7200 x 3600 |
Pixel Size | 5600 m |
SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
---|---|---|---|---|---|---|---|
BRF_B01 | Bidirectional Reflectance Factor, Band01 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B02 | Bidirectional Reflectance Factor, Band02 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B03 | Bidirectional Reflectance Factor, Band03 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B04 | Bidirectional Reflectance Factor, Band04 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B05 | Bidirectional Reflectance Factor, Band05 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B06 | Bidirectional Reflectance Factor, Band06 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRF_B07 | Bidirectional Reflectance Factor, Band07 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B01 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band01 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B02 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band02 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B03 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band03 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B04 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band04 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B05 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band05 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B06 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band06 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
BRFn_B07 | Bidirectional Reflectance Factor normalized to SZA=45° and nadir view, Band07 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B01 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band01 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B02 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band02 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B03 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band03 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B04 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band04 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B05 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band05 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B06 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band06 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
NBAR_B07 | Nadir BRDF adjusted Reflectance (NBAR), normalized to 1:30pm local time sun angle, Band07 | N/A | 16-bit signed integer | -28672 | N/A | 0 to 16000 | 0.0001 |
QA | QA bits | N/A | 8-bit unsigned integer | 255 | N/A | 0 to 3 | N/A |
cSZA | Cosine of Solar zenith angle | N/A | 16-bit signed integer | -28672 | N/A | 0 to 10000 | 0.0001 |
cVZA | Cosine View zenith angle | N/A | 16-bit signed integer | -28672 | N/A | 0 to 10000 | 0.0001 |
Rel_AZ | Relative azimuth angle | N/A | 16-bit signed integer | -28672 | N/A | -18000 to 18000 | 0.01 |
Product quality information is described in Section 5.8 in the User Guide.
Known issues are described in Section 6 of the User Guide.