The MODTBGA Version 6 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 2 Gridded Lite (L2G-lite) Thermal Band product consists of brightness temperature data from MODIS bands 20, 31, and 32 and albedo data from band 20 along with the orbit and granule pointer fields. MODTBGA is a daily product with a pixel size of 1 kilometer (km). The MODTBGA, as with other L2G data sets, stores the “best available pixel” from all the qualifying observations in the first layer and any subsequent observations are stored in either full or a compact layers within the Hierarchical Data Format (HDF) file.
The MODOCGA data product is categorized with the Surface Reflectance products and has therefore attained stage 3 validation.
|File Size||~12 MB|
|Temporal Extent||2000-02-24 to Present|
|Geographic Dimensions||1200 km x 1200 km|
|Number of Science Dataset (SDS) Layers||7|
|Columns/Rows||1200 x 1200|
|Pixel Size||1000 m|
|SDS Name||Description||Units||Data Type||Fill Value||No Data Value||Valid Range||Scale Factor|
|num_observations||Number of observations per pixel||N/A||8-bit signed integer||-1||N/A||0 to 127||N/A|
|BAND20_1||Brightness Temperature Band 20 (3.66-3.84 μm)||Kelvin||16-bit unsigned integer||0||N/A||0 to 33300||0.01|
|BAND31_1||Brightness Temperature Band 31 (10.78-11.284 μm)||Kelvin||16-bit unsigned integer||0||N/A||0 to 37800||0.01|
|BAND32_1||Brightness Temperature Band 32 (11.77-12.27 μm)||Kelvin||16-bit unsigned integer||0||N/A||0 to 41900||0.01|
|BAND20ALBEDO_1||Albedo Band 20||N/A||16-bit signed integer||-28672||N/A||0 to 5000||0.0001|
|orbit_pnt_1||Orbit Pointer||N/A||8-bit signed integer||-1||N/A||0 to 15||N/A|
|granule_pnt_1||Granule Pointer||N/A||8-bit unsigned integer||255||N/A||0 to 254||N/A|
If the "L2GStorageFormat" metadata value is "full" additional data layers will be present with the suffix “_f”. If the "L2GStorageFormat" metadata value is "compact" the suffix will be “_c”.
A Quality Assurance layer is not included with this product.
MODTBGA does not have a specific Known Issues page. Pleae see the general Terra Known Issues page for further details.