Assessing the use of VIIRS Aerosol Intermediate Product for AOD retrieval and PM25 concentrations.

Abstract:

In previous work, it was shown that MODIS AOD retreivals over urban areas have overbiases that can be removed if proper account is made of the surface land classification. In fact, both direct methods where improvements to urban model albedos were implemented as well as post processing approaches using Neural Networks (NN's) were shown to be useful in reducing biases and retreival uncertainty. In this paper, we make a preliminary study of these approaches to the VIIRS Intermediate Aerosol Optical Depth Product and demonstrate that VIIRS Biases can also be substantially reduced. Comparisons with MODIS will be made and direct use of the high resolution product will be used to assess potential PM25 estimation.