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Numerical Simulation of Complicated Photochemical Reactions Occurring in the Atmosphere

대기내 발생하는 복잡한 광화학반응에 대한 수치실험

  • Won Gyeong-Mee (Department of Atmospheric Sciences, Pusan National University) ;
  • Kim Yoo-Keun (Department of Atmospheric Sciences, Pusan National University) ;
  • Lee Haw-Woon (Department of Atmospheric Sciences, Pusan National University) ;
  • Kim Hee-Jeoung (Department of Atmospheric Sciences, Pusan National University)
  • Published : 2006.03.01

Abstract

In predicting oxidants concentration, the most important fact is to select a suitable photochemical reaction mechanism. Sensitivity analysis of $O_3$ and other important photochemical oxidants concentrations was conducted by using CBM-IV model. The predicted oxidants concentration was considerably related with the initial concentration of formaldehyde, $[NO_2]/[NO],\;NO_x$, RH and RCHO. As the initial concentration of formaldehyde increased, concentration of $NO_2$ increased. $O_3$ concentration was proportional to the $[NO_2]/[NO]$ ratio. When the initial concentrations of RH and RCHO were high, photochemical reaction was more reactive, including more rapid conversion of NO to $NO_2$ and increased oxidants. Also, the sensitivities of ozone formation to rate constants, $K_l,\;K_2\;and\;K_3$ in the $NO_2$ photolysis were studied.

Keywords

CBM-IV Model;Photochemical Reaction;Oxidants Formation;Initial Concentration;Sensitivity of ozone;Rate Constant

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