Title:
Analyses of Atmospheric Pollutants in Atlanta and Hong Kong Using Observation-Based Methods

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dc.contributor.advisor Chameides, William Lloyd
dc.contributor.author Zhang, Jing en_US
dc.contributor.committeeMember C. S. Kiang
dc.contributor.committeeMember Carlos Cardelino
dc.contributor.committeeMember Michael Bergin
dc.contributor.committeeMember Tao Wang
dc.contributor.department Earth and Atmospheric Sciences en_US
dc.date.accessioned 2005-03-01T19:18:36Z
dc.date.available 2005-03-01T19:18:36Z
dc.date.issued 2004-08-04 en_US
dc.description.abstract There are two parts in this study. The first part is to test the validity of the assumption of thermodynamic equilibrium between fine particulate (PM2.5) nitrate and ammonium and gas-phase nitric acid (HNO3(g)) and ammonia (NH3(g)). A rough estimation of the characteristic time to achieve thermodynamic equilibrium is first carried out, which suggests that PM2.5 and gas-phase species are in thermodynamic equilibrium. Then equilibrium is tested by calculating the equilibrium concentrations of HNO3(g) and NH3(g) implied by the PM2.5 inorganic composition, temperature and relative humidity observed at the Atlanta Supersite 1999 using ISORROPIA model. The second part of this study is to analyze the ground-level ozone pollution precursor relationships in Hong Kong area. Characteristics of O3 precursors are explored. Trace gases NO and CO, VOCs, absorption coefficient, temperature and solar radiation are associated with the O3 formation. Specific VOC and VOC-sources that contribute most to the formation of photochemical smog are identified. The accuracy of pollutant emission inventories for Hong Kong and PRD region is also assessed. Combined with back trajectory information, dCO/dNOy is used to define whether O3 is locally or regionally occurred. An OBM is used to investigate the relative benefits of various emission-control strategies. Generally the formation of O3 throughout much of Hong Kong area is limited by VOC, in which reactive aromatics are dominant. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 4295966 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/4768
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Ozone pollution precursor relationship en_US
dc.subject Ozone formation
dc.subject Reactivity
dc.subject Observation based model
dc.subject Acidity
dc.subject Thermodynamic equilibrium
dc.subject Fine particles
dc.subject Nitrate/nitric acid
dc.subject Ammonium/ammonia
dc.subject.lcsh Thermodynamic equilibrium en_US
dc.subject.lcsh Air Pollution China Hong Kong en_US
dc.subject.lcsh Ozone Environmental aspects China Hong Kong en_US
dc.title Analyses of Atmospheric Pollutants in Atlanta and Hong Kong Using Observation-Based Methods 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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