Aerosol optical depth modulations by lower tropospheric meteorological fields

Marina Aloysius; M. Mohan; K. Parameswaran

doi:10.1117/12.694082

8 December 2006 Aerosol optical depth modulations by lower tropospheric meteorological fields

Marina Aloysius, M. Mohan, K. Parameswaran

Proceedings Volume 6408, Remote Sensing of the Atmosphere and Clouds; 640815 (2006) https://doi.org/10.1117/12.694082
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

Abstract

The role of local production and transport in governing the spatial distribution of aerosol loading over the Indian subcontinent and adjoining oceanic regions are examined using satellite derived aerosol optical depth (AOD) and wind speed obtained from National Centre for Environmental Prediction (NCEP) reanalysis for the year 2004 (study domain: 20S°-40°N, 40°-120°N). The association of AOD with wind speed, wind convergence, vorticity and vertical velocity are examined for the Arabian Sea, Bay of Bengal, equatorial Indian Ocean as well as over the land surface in central India for different seasons. This analysis shows that the AOD dependence on these dynamical variables are significantly different for different seasons. Introducing MODIS derived AOD and the NCEP winds into an aerosol flux continuity equation, the locations of aerosol generation are identified and their strengths estimated for different months.

Citation Download Citation

Marina Aloysius, M. Mohan, and K. Parameswaran "Aerosol optical depth modulations by lower tropospheric meteorological fields", Proc. SPIE 6408, Remote Sensing of the Atmosphere and Clouds, 640815 (8 December 2006); https://doi.org/10.1117/12.694082

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