PMID: 18720658Aug 30, 2008Paper

Rethinking the assessment of photochemical modelin systems in air quality planning applications

Journal of the Air & Waste Management Association
C HogrefeGopal Sistla

Abstract

The U.S. Environmental Protection Agency provides guidelines for demonstrating that future 8-hr ozone (O3) design values will be at or below the National Ambient Air Quality Standards on the basis of the application of photochemical modeling systems to simulate the effect of emission reductions. These guidelines also require assessment of the model simulation against observations. In this study, we examined the link between the simulated relative responses to emission reductions and model performance as measured by operational evaluation metrics, a part of the model evaluation required by the guidance, which often is the cornerstone of model evaluation in many practical applications. To this end, summertime O3 concentrations were simulated with two modeling systems for both 2002 and 2009 emission conditions. One of these two modeling systems was applied with two different parameterizations for vertical mixing. Comparison of the simulated base-case 8-hr daily maximum O3 concentrations showed marked model-to-model differences of up to 20 ppb, resulting in significant differences in operational model performance measures. In contrast, only relatively minor differences were detected in the relative response of O3 concentrations to ...Continue Reading

Citations

Aug 5, 2010·Journal of the Air & Waste Management Association·William VizueteEvan Couzo
Feb 11, 2011·Journal of the Air & Waste Management Association·Christian HogrefeGopal Sistla
May 26, 2011·Journal of the Air & Waste Management Association·James H Smith
May 26, 2011·Journal of the Air & Waste Management Association·Chenxia CaiWilliam R Stockwell
Apr 26, 2011·Atmospheric Environment·Christos EfstathiouPanos Georgopoulos
May 7, 2016·Environmental Science & Technology·Jinhyok HeoH Oliver Gao
Dec 15, 2016·Journal of the Air & Waste Management Association·Christopher EmeryNaresh Kumar
Jan 1, 2010·Environmental Fluid Mechanics·Robin DennisAkula Venkatram
Mar 22, 2011·Journal of the Air & Waste Management Association·William VizueteEvan Couzo
Aug 13, 2010·Environmental Science & Technology·Antara Digar, Daniel S Cohan

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