Cloud chemistry effects on tropospheric photooxidants in polluted atmosphere — Model results

✍ Scribed by D. Möller; G. Mauersberger

• Book ID: 104626144
• Publisher: Springer Netherlands
• Year: 1992
• Tongue: English
• Weight: 542 KB
• Volume: 14
• Category: Article
• ISSN: 0167-7764
• DOI: 10.1007/bf00115231

✦ Synopsis

The mathematical model presented in this paper describes in detail the gas-phase chemistry (22 reactions), gas-phase/liquid-phase equilibrium (18 equilibria) and liquid-phase chemistry (57 reactions and equilibria) in a stratiform cloud system. The model is used to analyze the influence of the liquid phase on the photooxidant formation and destruction for different gaseous SO2 concentrations with and without consideration of organlc aqueous phase chemistry.

It has been shown that for [S02] > 1 ppb the cloud is quantitatively a sink for H202, OH, HO 2 and 03 . The ozon destruction via 03 + 02-, whfch is most important in remote areas, is in polluted areas only significant at summer days. The role of organic components in cloud water consists in the transformation OH ---> HO 2 where HO 2 is further transformed into H202.