Characterization of Aerosol Data Quality from MODIS for Coastal Locations
Abstract
The Moderate Resolution Imaging Spectroradiometer (MODIS) sensor is on board both Terra and Aqua satellites. It uses two independent algorithms to retrieve Aerosol Optical Depth (AOD) based on the surface it is viewing: Ocean or Land. A combination parameter is also created by processing the Land and Ocean retrievals into a single data set, Land_And_Ocean. In coastal areas, retrievals from both algorithms are reported. The primary objective of this research is to identify the data quality of the different algorithms and determine which performs better for coastal areas. The secondary objective is to determine if the distance from the coast affects MODIS retrieval accuracy. AeroStat Giovanni provides an online tool, through the NASA webpage, to analyze collocated satellite and ground based measurements. Analysis was performed using the collocated MODIS and Global Aerosol Robotic Network (AERONET) data for both coastal and non-coastal regions. Preliminary results show that the Ocean algorithm generally underestimate AOD near the coast and overestimates for non-coastal locations. It is also visible that the Land algorithm performs better than the Ocean algorithm for coastal locations.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2011
- Bibcode:
- 2011AGUFM.A53C0373A
- Keywords:
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- 0305 ATMOSPHERIC COMPOSITION AND STRUCTURE / Aerosols and particles;
- 3360 ATMOSPHERIC PROCESSES / Remote sensing