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List of Abstracts 36(chemical atmospheric general circulation model for study of atmospheric environment and radiativeforcing) every day. The lateral boundary and the initial condition of the WRF/Chem is updated every 3 hoursfrom the CHASER's output. An experimental phase for this model system began in July of 2006 and hasprovided 15-hour forecasts of the distribution of ozone concentration over the Kanto region four times daily.We are now trying to include mineral dust aerosols in the model, because mineral dusts have a large impacton the radiation in East Asia in spring. In the present study we use WRF/ARW (Advanced Research WRF)version 3.1.1, and the gaseous and aerosol chemistry is based on RADM2 and MADE/SORGAM,respectively. Dust flux is estimated based on Shaw et al. (2008), and slightly modified to adapt to the EastAsia following to Uno et al. (2004). Gravitational settlement of mineral dust is based on GOCART (GoddardChemistry Aerosol Radiation and Transport) model. Landuse is based on the MODIS land-use data. For theevaluation of the model, we conducted one month calculation for May 2007. The model well captured thedust event during 25-26 May observed by the Mie scattering Lidar at Fukue in Japan.P-Sources.52 ID:4347 15:35Long-range transport of dust aerosols over Indian region – A study using satellite data and mesoscalemodelShailesh Kumar Kharol 1 , K.V.S. Badarinath 1 , D.G. Kaskaoutis 2 , Anu Rani Sharma 1 , V. Ramaswamy 3 ,H.D. Kambezidis 21 National Remote Sensing Centre, Hyderabad, India2 National Observatory of Athens, Greece3 National Institute of Oceanography, Goa, IndiaContact: shaileshan2000@yahoo.co.inDust, which is a common aerosol type over the deserts, emitted by wind erosion in arid and semiarid areas, isconsidered to be one of the major sources of tropospheric aerosol loading. Desert dust can be transported bythe mean wind to thousands of kilometers away from the source regions; this transport plays an importantrole in the regional and global radiative balance both at the top of the atmosphere (TOA) and at the surface.In the present study a wintertime intense dust storm occurred during the period of 19-24 February 2008 withstronger intensity on 22 February in south Asia (covering Persian Gulf, Arabian Sea and western India), wasinvestigated via remote-sensing observations and ground-based measurements. Several satellite observationsfrom sensors such as MODIS on board Terra and Aqua, OMI on board AURA, CALIPSO and KALPANA-1VHRR were used to detect the main source regions of the dust outbreak and monitor its spatio-temporaldistribution. Additionally, AERONET measurements over six stations in south Asia as well asMICROTOPS-II and MFRSR measurements over Hyderabad, India, accomplished and partially validatedthe satellite observations. Finally, MM5 model was used to provide the meteorological conditions (windspeed and direction) favoring the dust erosion and transport. The results showed that strong winds, both insurface and middle troposphere, favored the exposure, uplift and long-range transport of desert-dust aerosolscovering an extended area of the Persian Gulf, AS, Pakistan and western India. Both MODIS and OMIobservations identified aerosols in Pakistan, where the dust plume presented its highest intensity. Lidarmeasurements over Hyderabad revealed an elevated dust aerosol layer (~3 km), above the thick boundaryaerosol layer, suggesting long-range transport of dust aerosols. The dust presence over Hyderabad in theafternoon hours of 22 February caused ~6% reduction in ground reaching solar irradiance.iCACGP-IGAC 2010 12 July, 2010