Title:
Investigations of the Emissions and Fate of Anthropogenic Air Pollutants from East Asia Using Regional On-line and Off-line Chemistry-Climate Modeling System

dc.contributor.advisor Chameides, William Lloyd
dc.contributor.author Tan, Qian en_US
dc.contributor.committeeMember Dickinson, Robert
dc.contributor.committeeMember Russell, Armistead
dc.contributor.committeeMember Wang, Yuhang
dc.contributor.committeeMember Weber, Rodney
dc.contributor.department Earth and Atmospheric Sciences en_US
dc.date.accessioned 2005-03-03T22:00:16Z
dc.date.available 2005-03-03T22:00:16Z
dc.date.issued 2004-04-08 en_US
dc.description.abstract The work presented in this thesis document reflects the results of a study carried out to better quantify the magnitude and fate of the anthropogenic air pollutants emitted from East Asia. Simulations of anthropogenic sulfur compounds by a regional on-line coupled chemistry-climate model suggest that large portions of East Asia have high SOx concentrations, and most subregions within East Asia are net exporters of SOx (SO2+SO4) (i.e. the anthropogenic S emissions from the region are greater than the deposition to the region). Among them, China is responsible for ~ 85% of the total emissions, and ~ 50 % of its total emitted SOx is exported to locations outside its borders. During the later winter to early spring when the continental outflow conditions predominate, about 20% of the total emitted SOx within the investigated area has been exported to North Pacific Ocean based on our model simulations. Those exported anthropogenic SOx from East Asia (mainly in the form of sulfate) is likely large enough to perturb the sulfate aerosol concentration over the North Pacific Ocean. Our investigation by integrating numerical simulations through a regional off-line full chemistry transport model, which is driven by the meteorological conditions calculated by a regional climate model, with field measurements of both gaseous and particulate species at a rural site adjacent to the largest industrialized area in China suggests that CO emissions from China, especially eastern China are likely underestimated by ~ 50 % in the current East Asia anthropogenic emission inventories. In addition, a 60-90 % underestimation of particulate carbonaceous emission in the inventories is suggested. Further statistical diagnoses, together with the back-trajectory analysis show that the missing CO sources are likely associated with SO2 sources that are already accounted for in the current inventories. This in turn suggests the emission factors of coal-combustors used in the current inventories are likely underestimated. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 4154882 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5185
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject East Asia emission inventory en_US
dc.subject RegCM
dc.subject Atmospheric chemistry
dc.subject.lcsh Atmospheric chemistry East Asia en_US
dc.subject.lcsh Atmospheric sulfur dioxide East Asia en_US
dc.subject.lcsh Air Pollution East Asia en_US
dc.title Investigations of the Emissions and Fate of Anthropogenic Air Pollutants from East Asia Using Regional On-line and Off-line Chemistry-Climate Modeling System en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename School of Earth and Atmospheric Sciences
local.contributor.corporatename College of Sciences
relation.isOrgUnitOfPublication b3e45057-a6e8-4c24-aaaa-fb00c911603e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
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