Title:
Use of inverse modeling in air quality management

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dc.contributor.advisor Russell, Armistead G.
dc.contributor.advisor Chang, Michael
dc.contributor.author Akhtar, Farhan Hussain en_US
dc.contributor.committeeMember Gottschalk, Marlin
dc.contributor.committeeMember Noonan, Douglas
dc.contributor.committeeMember Wang, Yuhang
dc.contributor.department Earth and Atmospheric Sciences en_US
dc.date.accessioned 2011-03-04T20:54:57Z
dc.date.available 2011-03-04T20:54:57Z
dc.date.issued 2009-08-21 en_US
dc.description.abstract Inverse modeling has been used in the past to constrain atmospheric model parameters, particularly emission estimates, based upon ambient measurements. Here, inverse modeling is applied to air quality planning by calculating how emissions should change to achieve desired reduction in air pollutants. Specifically, emissions of nitrogen oxides (NOx = NO + NO2) are adjusted to achieve reductions in tropospheric ozone, a respiratory irritant, during an historic episode of elevated concentrations in urban Atlanta, GA. Understanding how emissions should change in aggregate without specifying discrete abatement options is particularly applicable to long-term and regional air pollution management. Using a cost/benefit approach, desired reductions in ozone concentrations are found for a future population in Atlanta, GA. The inverse method is applied to find NOx emission adjustments to reach this desired reduction in air pollution. An example of how emissions adjustments may aid the planning process in two neighborhoods is demonstrated using urban form indicators from a land use and transportation database. Implications of this method on establishing regional and market-based air quality management systems in light of recent legal decisions are also discussed. Both ozone and secondary particulate matter with diameters of less than 2.5μm (PM2.5) are formed in the atmosphere from common precursor species. Recent assessments of air quality management policies have stressed the need for pollutant abatement strategies addressing these mutual sources. The relative contribution of several important precursor species (NOx, sulfur dioxide, ammonia, and anthropogenic volatile organic compounds) to the formation of ozone and secondary PM2.5 in Atlanta during May 2007 - April 2008 is simulated using CMAQ/DDM-3D. This sensitivity analysis is then used to find adjustments in emissions of precursor species to achieve goal reductions for both ozone and secondary PM2.5 during a summertime episode of elevated concentrations. A discussion of the implications of these controls on air pollutant concentrations during the remaining year follows. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/37213
dc.publisher Georgia Institute of Technology en_US
dc.subject Inverse methods en_US
dc.subject Air pollution policy en_US
dc.subject Urban and city planning en_US
dc.subject.lcsh Air quality management
dc.subject.lcsh Air quality
dc.title Use of inverse modeling in air quality management en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Russell, Armistead G.
local.contributor.corporatename School of Earth and Atmospheric Sciences
local.contributor.corporatename College of Sciences
relation.isAdvisorOfPublication 23a79925-40ae-449e-840e-644668649d00
relation.isOrgUnitOfPublication b3e45057-a6e8-4c24-aaaa-fb00c911603e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
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