Vapour pressures of H2SO4/HNO3/HCI/HBr/H2O solutions to low stratospheric temperatures

Journal Article · Wed Feb 01 00:00:00 EST 1995 · Geophysical Research Letters

DOI:https://doi.org/10.1029/94GL02988· OSTI ID:57426

Luo, B; Carslaw, K S; Peter, T; Clegg, S L ^[1]

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1. Max-Planck-Inst. fuer Chemie, Mainz (Germany)

Vapor pressures of H2O, HNO3, HCl and HBr over supercooled aqueous mixtures with sulfuric acid have been calculated using an activity coefficient model, for 185 K less than T less than 235 K, 0 less than wt% (H2SO4) + wt% (HNO3) less than 70, and assuming HCl and HBr to be minor constituents. Predicted vapor pressures agree well with most laboratory data, and give confidence in the validity of the model. The results are parameterized as simple formulae, which reproduce the model results to within 40% and cover the entire stratospherically relevant range of composition and temperature.

• OSTI ID: 57426
• Journal Information: Geophysical Research Letters, Vol. 22, Issue 3; Other Information: PBD: Feb 1995
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
OZONE
REMOTE SENSING
STRATOSPHERE
EARTH ATMOSPHERE
AIR POLLUTION
AEROSOLS
SULFATES