Modelling the impact of possible snowpack emissions of O(3P) and NO2 on photochemistry in the South Pole boundary layer

P. D. Hamer, D. E. Shallcross, A. Yabushita, M. Kawasaki

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

O(3P) emissions due to photolysis of nitrate were recently identified from ice surfaces doped with nitric acid. O(3P) atoms react directly with molecular oxygen to yield ozone. Therefore, these results may have direct bearing on photochemical activity monitored at the South Pole, a site already noted for elevated summertime surface ozone concentrations. NO2 is also produced via the photolysis of nitrate and the firn air contains elevated levels of NO2, which will lead to direct emission of NO2. A photochemical box model was used to probe what effect O(3P) and NO2 emissions have on ozone concentrations within the South Pole boundary layer. The results suggest that these emissions could account for a portion of the observed ozone production at the South Pole and may explain the observed upward fluxes of ozone identified there.

本文言語英語
ページ(範囲)268-273
ページ数6
ジャーナルEnvironmental Chemistry
5
4
DOI
出版ステータス出版済み - 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学(その他)
  • 環境化学
  • 地球化学および岩石学

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