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A Condensed Gas-Phase Chemical Model and Its Application


doi: 10.1007/s00376-999-0035-y

  • Using the “lumped mechanism” and “counting species” methods, we developed a condensed gas-phase chemical model based on a simplified one. The modified quasi-steady-state approximation (QSSA) scheme and the error redistribution mass conservation technique are adopted to solve the atmospheric chemistry ki-netic equations. Results show that the condensed model can well simulate concentration variations of gas species such as SO2, NOx, O3, H2O2 and conversion rates of SO2 and NOx, transformation to H2SO4 and HNO3. These results are in good agreement with those from the simplified model, The conversion rates of SO2 and NOx under different initial concentrations and meteorological conditions are computed, and the results can be directly applied to regional acid deposition model.
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Manuscript History

Manuscript received: 10 October 1999
Manuscript revised: 10 October 1999
通讯作者: 陈斌, bchen63@163.com
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A Condensed Gas-Phase Chemical Model and Its Application

  • 1. Department of Atmospheric Sciences, Nanjing University, Nanjing 210093,Nanjing Institute of Meteorology, Nanjing 210044,Department of Atmospheric Sciences, Nanjing University, Nanjing 210093

Abstract: Using the “lumped mechanism” and “counting species” methods, we developed a condensed gas-phase chemical model based on a simplified one. The modified quasi-steady-state approximation (QSSA) scheme and the error redistribution mass conservation technique are adopted to solve the atmospheric chemistry ki-netic equations. Results show that the condensed model can well simulate concentration variations of gas species such as SO2, NOx, O3, H2O2 and conversion rates of SO2 and NOx, transformation to H2SO4 and HNO3. These results are in good agreement with those from the simplified model, The conversion rates of SO2 and NOx under different initial concentrations and meteorological conditions are computed, and the results can be directly applied to regional acid deposition model.

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