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dc.contributor.authorBadarinath, K.V.S.
dc.contributor.authorKharol, S.K.
dc.contributor.authorSharma, A.R.
dc.contributor.authorRamaswamy, V.
dc.contributor.authorKaskaoutis, D.G.
dc.contributor.authorKambezidis, H.D.
dc.date.accessioned2009-12-21T06:43:10Z
dc.date.available2009-12-21T06:43:10Z
dc.date.issued2009
dc.identifier.citationAtmospheric Environment, vol.43(24); 3708-3716
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3486
dc.description.abstractTropical cyclones are prominent weather systems characterized by high atmospheric pressure gradients and wind speeds. Intense tropical cyclones occur in India during the pre-monsoon (spring), early monsoon (early summer), or post-monsoon (fall) periods. Originating in both the Bay of Bengal (BoB) and the Arabian Sea (AS), these tropical cyclones often attain velocities of more than 100 km h sup(-1) and are notorious for causing intense rain and storm surge as they cross the Indian coast. The changes in the aerosol properties associated with an intense tropical cyclone `SIDR`, that occurred during 11-16 November 2007 over BoB is exmined. This cyclone, accompanied with very strong surface winds reaching 223 km h sup(-1), caused extensive damage over Bangladesh. Ground-based measurements of Aerosol Optical Depth (AOD) in the neighboring urban environment of Hyderabad, India, showed significant variations due to changes in wind velocity and direction associated with the cyclone passage. The Terra-MODIS and AVHRR satellite images showed prevalence of dust particles mixed with emissions from anthropogenic sources and biomass-burning AS, while the aerosol loading over BoB was significantly lower. The positive values of Aerosol index (AI) obtained from the Ozone Monitoring Instrument (OMI) suggested the presence of an elevated aerosol layer over the west coast of India, AS and Thar Desert during and after the cyclone episode. Meteorological parameters from the MM5 mesoscale model were used to study the variations in winds associated with the cyclonic activity. Particulate matter loading over the region during the cyclone period increased by w45% with an accompanying decrease in columnar aerosol optical depth. The variations in Angstrom parameters suggested coarse-mode particle loading due to dust aerosols as observed in satellite data
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2009] Elsevier
dc.subjectatmospheric particulates
dc.subjectremote sensing
dc.subjectatmospheric chemistry
dc.subjecttropical cyclones
dc.titleInvestigations of an intense aerosol loading during 2007 cyclone SIDR - A study using satellite data and ground measurements over Indian region
dc.typeJournal Article


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