Grantee Research Project Results
2007 Progress Report: Changes in Climate, Pollutant Emissions, and US Air Quality: An Integrating Modeling Study
EPA Grant Number: R833374Title: Changes in Climate, Pollutant Emissions, and US Air Quality: An Integrating Modeling Study
Investigators: Adams, Peter , Pandis, Spyros N.
Institution: Carnegie Mellon University
EPA Project Officer: Chung, Serena
Project Period: March 1, 2007 through February 28, 2011 (Extended to February 28, 2012)
Project Period Covered by this Report: March 1, 2007 through February 28,2008
Project Amount: $896,596
RFA: Consequences of Global Change For Air Quality (2006) RFA Text | Recipients Lists
Research Category: Climate Change , Air
Objective:
The objective of this research is to quantify the effect of changes in climate, emissions, and long-range transport on air quality in the United States. In the process, we will answer the following questions:Progress Summary:
In the time period covered by this report, efforts were focused on Tasks 2, 3, 4, and 6. The regional air quality model, PMCAMx, was upgraded to predict secondary organic aerosol (SOA) concentrations using the new “basis set” approach. This new approach predicts organic aerosol (OA) concentrations in better agreement with observations than the previous two-product model. Higher SOA yields from anthropogenic precursors improve the model performance in urban areas. Work began in implementing this improved “basis set” formulation for SOA into the global climate model, GISS GCM.
To develop a model that can predict ultrafine (particle diameter less than 100 nm) aerosol number concentrations at the urban and regional scales, the TwO-Moment Aerosol Sectional (TOMAS) microphysics algorithm was implemented into PMCAMx. Box model simulations showed that ternary nucleation theory was best able, of several proposed nucleation theories, to predict the occurrence or absence of nucleation events in
We have upgraded PMCAMx to simulate mercury initially based on the CAMx mercury module. The module currently includes three forms of mercury: elemental Hg0, reactive Hg2+ and particulate Hg(p) and reactions in the gas and aqueous phases. Reactions included are the gas-phase oxidation of elemental mercury by O3, HCl, H2O2, Cl2, and OH, aqueous-phase oxidation by O3, OH, HO2, HOCl, and OCl-. We are currently testing the module focusing on its sensitivity to boundary conditions in the
Earlier funding culminated in several papers assessing the overall impact of global change on ozone and PM2.5 levels in the
Future Activities:
References:
Journal Articles on this Report : 11 Displayed | Download in RIS Format
Other project views: | All 29 publications | 21 publications in selected types | All 21 journal articles |
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Dawson JP, Adams PJ, Pandis SN. Sensitivity of PM2.5 to climate in the Eastern US: a modeling case study. Atmospheric Chemistry and Physics 2007;7(16):4295-4309. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Dawson JP, Racherla PN, Lynn BH, Adams PJ, Pandis SN. Simulating present-day and future air quality as climate changes: model evaluation. Atmospheric Environment 2008;42(19):4551-4566. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Day MC, Pandis SN. Predicted changes in summertime organic aerosol concentrations due to increased temperatures. Atmospheric Environment 2011;45(36):6546-6556. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Farina SC, Adams PJ, Pandis SN. Modeling global secondary organic aerosol formation and processing with the volatility basis set: implications for anthropogenic secondary organic aerosol. Journal of Geophysical Research–Atmospheres 2010;115(D9):D09202. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Jathar SH, Farina SC, Robinson AL, Adams PJ. The influence of semi-volatile and reactive primary emissions on the abundance and properties of global organic aerosol. Atmospheric Chemistry and Physics 2011;11(15):7727-7746. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) R833748 (2010) R833748 (Final) |
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Jung JG, Pandis SN, Adams PJ. Evaluation of nucleation theories in a sulfur-rich environment. Aerosol Science and Technology 2008;42(7):495-504. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Jung J, Fountoukis C, Adams PJ, Pandis SN. Simulation of in situ ultrafine particle formation in the eastern United States using PMCAMx-UF. Journal of Geophysical Research–Atmospheres 2010;115(D3):D03203 (13 pp.). |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Lane TE, Donahue NM, Pandis SN. Effect of NOx on secondary organic aerosol concentrations. Environmental Science & Technology 2008;42(16):6022-6027. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Lane TE, Donahue NM, Pandis SN. Simulating secondary organic aerosol formation using the volatility basis-set approach in a chemical transport model. Atmospheric Environment 2008;42(32):7439-7451. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Lee YH, Adams PJ. Evaluation of aerosol distributions in the GISS-TOMAS global aerosol microphysics model with remote sensing observations. Atmospheric Chemistry and Physics 2010;10(5):2129-2144. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
Exit Exit |
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Racherla PN, Adams PJ. The response of surface ozone to climate change over the Eastern United States. Atmospheric Chemistry and Physics 2008;8(4):871-885. |
R833374 (2007) R833374 (2008) R833374 (2010) R833374 (Final) |
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Supplemental Keywords:
Air quality modeling, smog, particulate matter, general circulation models, biogenic emissions, pollution., RFA, Scientific Discipline, Air, climate change, Air Pollution Effects, Environmental Monitoring, Atmospheric Sciences, Ecological Risk Assessment, Atmosphere, air quality modeling, particulate matter, atmospheric modelsRelevant Websites:
Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.