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Topic Frequently Asked Questions / Data Products & Algorithms FAQ / Data Format Information about MODIS Level 1A/1B files (locked)
How and why are the Level 1A and Level 1B files modified by the Ocean Biology Processing Group (OBPG)?
The MODIS Level 1A data files that we produce and distribute are reduced (or subsetted) in a process where excess bands and data that are not utilized by Oceans are removed. The MODIS Level 1B data contains calibrated and geolocated at-aperture radiances generated from the subsetted Level 1A sensor files and GEO files. The Level 1A subsetting allows us to archive and distribute the entire mission online, while still retaining the information needed in the Level 1A subset to derive all higher-level MODIS Aqu Ocean products as well as true color imagery.
Complete details about the modifications to the Level 1A and 1B data formats:
http://oceancolor.gsfc.nasa.gov/PRODUCTS/Level_1A.html
http://oceancolor.gsfc.nasa.gov/PRODUCTS/Level_1B.html
A full description of the OBPG data processing is available http://oceancolor.gsfc.nasa.gov/DOCS/MODISA_processing.htm
The MODIS Level 1A data files that we produce and distribute are reduced (or subsetted) in a process where excess bands and data that are not utilized by Oceans are removed. The MODIS Level 1B data contains calibrated and geolocated at-aperture radiances generated from the subsetted Level 1A sensor files and GEO files. The Level 1A subsetting allows us to archive and distribute the entire mission online, while still retaining the information needed in the Level 1A subset to derive all higher-level MODIS Aqu Ocean products as well as true color imagery.
Complete details about the modifications to the Level 1A and 1B data formats:
http://oceancolor.gsfc.nasa.gov/PRODUCTS/Level_1A.html
http://oceancolor.gsfc.nasa.gov/PRODUCTS/Level_1B.html
A full description of the OBPG data processing is available http://oceancolor.gsfc.nasa.gov/DOCS/MODISA_processing.htm
Topic Frequently Asked Questions / Data Products & Algorithms FAQ / Data Format Information about MODIS Level 1A/1B files (locked)