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Laboratory studies of the nitric acid trihydrate: Implications for the south polar stratosphere

Hanson, David, Mauersberger, Konrad·1988·Geophysical Research Letters

Abstract

Vapor pressures of HNO 3 and H 2 O have been measured over the trihydrate crystal, formed by vapor deposit on a glass surface. In the temperature range 190 K to 205 K the two phase‐equilibrium trihydrate/vapor was studied by adding and removing H 2 O. Coexistence equilibria vapor pressures of trihydrate/solid solutions of HNO 3 in ice (‘ice’) and of mono‐/trihydrate were also measured. Results show that for typical mixing ratios of H 2 O and HNO 3 found in the lower stratosphere (3 ppm H 2 O, 5 ppb HNO 3) the trihydrate would start to form at temperatures about 7 K higher than the ice point. The pressure of atmospheric HNO 3 would rapidly decrease as the atmosphere cools without large changes in partial pressures of H 2 O. These laboratory results provide information on the formation of polar stratospheric clouds containing H 2 O and HNO 3.

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Metadata

Authors
Hanson, D., & Mauersberger, K.
Venue
Geophysical Research Letters
Published
1988-08
Volume
15
Issue
8
Pages
855-858
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2127024102
Cited by
755
References
0
FWCI
31.12
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Laboratory studies of the nitric acid trihydrate: Implications for the south polar stratosphere. https://app.cochat.ai/papers/10.1029/gl015i008p00855
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Hanson, D., & Mauersberger, K. (1988). Laboratory studies of the nitric acid trihydrate: Implications for the south polar stratosphere. Geophysical Research Letters. https://doi.org/10.1029/gl015i008p00855

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