Sulfur dioxide incorporation into ice depositing from the vapor

Journal Article · Fri Jan 20 04:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JD094iD01p01095· OSTI ID:5273968

Valdez, M P; Dawson, G A; Bales, R C ^[1]

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1. Univ. of Arizona, Tucson (USA)

An experimental study has been made of the incorporation of SO{sub 2} into ice depositing from the vapor at {minus}15C. Surprisingly, SO{sub 2} was captured in deposited ice at concentrations comparable to those given by SO{sub 2}/S(IV) aqueous equilibrium at 0C. A consequence of this result is that, in the remote troposphere, unrimed snow scavenging ratios for SO{sub 2} may be comparable to those for sulfate. In addition, ozone and HCHO appeared to inhibit, rather than enhance, SO{sub 2} uptake. An aqueous-film model is developed to account for SO{sub 2} capture. If SO{sub 2} dissolves in a liquidlike layer on growing ice surfaces, the concentration of S(IV) species may become enhanced within the layer as a result of retarded diffusional transport away from the advancing ice/layer interface. Such a concentration increase can produce significant solute incorporation into the bulk ice, despite effective solute rejection from the ice.

• OSTI ID: 5273968
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:D1; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

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ACID RAIN
ALDEHYDES
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
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DISSOLUTION
EARTH ATMOSPHERE
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PRECIPITATION SCAVENGING
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SEPARATION PROCESSES
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SORPTIVE PROPERTIES
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SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
TROPOSPHERE
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WASHOUT