MODIS/Aqua Thermal Bands Daily L2G-Lite Global 1 km SIN Grid

PI: Eric Vermote

The MYDTBGA Version 6 data product was decommissioned on July 31, 2023.


The MYDTBGA Version 6 Moderate Resolution Imaging Spectroradiometer (MODIS) Level 2 Gridded Lite (L2G-lite) Thermal Band product consists of brightness temperature data from Aqua MODIS bands 20, 31, and 32 and albedo data from band 20 along with the orbit and granule pointer fields. MYDTBGA is a daily product with a pixel size of 1 kilometer (km). The MYDTBGA, 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.

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Improvements/Changes from Previous Versions

  • New product for MODIS Version 6.

Product Maturity

The MODTBGA data product is categorized with the Surface Reflectance products and has therefore attained stage 3 validation. Further details regarding MODIS land product validation for the Surface Reflectance data product are available from the MODIS Land Team Validation site.

Collection and Granule


Characteristic Description
CollectionAqua MODIS
File Size~11.54 MB
Temporal ResolutionDaily
Temporal Extent2002-07-04 to 2023-02-26
Spatial ExtentGlobal
Coordinate SystemSinusoidal
File FormatHDF-EOS
Geographic Dimensions1200 km x 1200 km


Characteristic Description
Number of Science Dataset (SDS) Layers7
Columns/Rows1200 x 1200
Pixel Size1000 m

Layers / Variables

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 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”.

Product Quality

A Quality Assurance layer is not included with this product.

Known Issues

MODTBGA does not have a specific Known Issues page. Pleae see the general Aqua Known Issues page for further details.

About the image

Aqua MODIS thermal band 20 data from the MYDTBGA product over the Iberian Peninsula, Portugal on August 19, 2018.

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User Guide
Algorithm Theoretical Basis Document (ATBD)
File Specification

Using the Data

Access Data


DOI: 10.5067/MODIS/MYDTBGA.006