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MODIS Collection 5

The MODIS Aerosol Product monitors the ambient aerosol optical thickness over the oceans globally and over a portion of the continents. The additional Deep Blue product fills in some of the missing continental areas in Collection 5.1. Further, the aerosol size distribution is derived over the oceans. Daily Level 2 data are produced at the spatial resolution of a 1010 1-km (at nadir)-pixel array. There are two MODIS Aerosol data product files: MOD04_L2, containing data collected from the Terra platform; and MYD04_L2, containing data collected from the Aqua platform.

Example result / latest result (if near-real time)


Satellite: EOS Terra / EOS Aqua
Instrument(s): MODIS
Instrument/algorithm PI: Lorraine Remer, NASA
Contact details: lorraine.a.remer[at]
Parameter(s): AOD, ngstrm exponent, fine mode ratio (over ocean)
Aerosol algorithm: MOD04_L2
Cloud screening: internal cloud mask
Aerosol model: from AERONET
Retrieval assumptions: bimodal aerosol model from one fine mode and one coarse mode
Retrieval limitations: different retrievals over land and ocean, no retrieval over bright surfaces except for Deep Blue
Spatial, temporal coverage: 2000-present / NRT, global
Spatial, temporal resolution: 1km / 2330km swath / 16 days repeat cycle
Operations status: operational / reprocessing
Validation status: 2000-present online access to validation results
Quality control: pixel-wise quality flag
last algorithm version: collection 5 (04/2006) / collection 5.1 (05/2008)
last validation: 2000-present