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NASA NTRS · 20140010902

Enhanced Deep Blue Aerosol Retrieval Algorithm: The Second Generation

Hsu, N. C.·Jeong, M.-J.·Bettenhausen, C.·Sayer, A. M.·Hansell, R.·Seftor, C. S.·Huang, J.·Tsay, S.-C.
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Abstract

The aerosol products retrieved using the MODIS collection 5.1 Deep Blue algorithm have provided useful information about aerosol properties over bright-reflecting land surfaces, such as desert, semi-arid, and urban regions. However, many components of the C5.1 retrieval algorithm needed to be improved; for example, the use of a static surface database to estimate surface reflectances. This is particularly important over regions of mixed vegetated and non- vegetated surfaces, which may undergo strong seasonal changes in land cover. In order to address this issue, we develop a hybrid approach, which takes advantage of the combination of pre-calculated surface reflectance database and normalized difference vegetation index in determining the surface reflectance for aerosol retrievals. As a result, the spatial coverage of aerosol data generated by the enhanced Deep Blue algorithm has been extended from the arid and semi-arid regions to the entire land areas.

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Hsu, N. C., Jeong, M.-J., Bettenhausen, C., Sayer, A. M., Hansell, R., Seftor, C. S., Huang, J., Tsay, S.-C.. 2013-08-30. Enhanced Deep Blue Aerosol Retrieval Algorithm: The Second Generation. https://ntrs.nasa.gov/citations/20140010902

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