Evidence for the removal of gaseous HNO 3  inside the arctic polar vortex in January 1992 | Zendy

Höpfner M. | Zendy; Blom C. E. | Zendy; Blumenstock T. | Zendy; Fischer H. | Zendy; Gulde T. | Zendy

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Evidence for the removal of gaseous HNO 3 inside the arctic polar vortex in January 1992

Author(s) -

Höpfner M.,

Blom C. E.,

Blumenstock T.,

Fischer H.,

Gulde T.

Publication year - 1996

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/95gl03779

Subject(s) - polar vortex , nitric acid , polar , stratosphere , saturation (graph theory) , arctic , analytical chemistry (journal) , the arctic , vortex , ternary operation , chemistry , atmospheric sciences , geology , meteorology , environmental chemistry , oceanography , physics , inorganic chemistry , astronomy , computer science , programming language , mathematics , combinatorics

Unexpectedly low column amounts of HNO 3 (1.3×10 16 cm −2 ) inside the Arctic polar vortex were obtained on January 9, 1992 by airborne FTIR emission measurements. After correction for dynamic variations it is concluded that about 40% of the column HNO 3 had been removed from the gas phase. The observed depletion is consistent with a nearly equilibrium saturation of HNO 3 over nitric acid trihydrate. It cannot be explained by the uptake of HNO 3 in ternary H 2 SO 4 /H 2 O/HNO 3 mixtures.

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