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, Akihiro Yabushita, M. Kawasaki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)268-273
Number of pages6
JournalEnvironmental Chemistry
Volume5
Issue number4
DOIs
Publication statusPublished - Sep 1 2008

Fingerprint

Photochemical reactions
Ozone
photochemistry
snowpack
Poles
Boundary layers
boundary layer
ozone
modeling
Photolysis
photolysis
Nitrates
Bearings (structural)
nitrate
Nitric Acid
firn
Molecular oxygen
Ice
nitric acid
probe

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Environmental Chemistry
  • Geochemistry and Petrology

Cite this

Modelling the impact of possible snowpack emissions of O(3P) and NO2 on photochemistry in the South Pole boundary layer. / Hamer, P. D.; Shallcross, D. E.; Yabushita, Akihiro; Kawasaki, M.

In: Environmental Chemistry, Vol. 5, No. 4, 01.09.2008, p. 268-273.

Research output: Contribution to journalArticle

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