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Soluble species in the Arctic summer troposphere - Acidic gases, aerosols, and precipitationThe large-scale spatial distribution from 0.15-to 6 km altitude in the North American Arctic troposphere of several soluble acidic gases and major aerosol species during the summertime is reported. The distribution is found to be compositionally consistent on a large spatial scale. The summertime troposphere is an acidic environment, with HCOOH and CH3COOH the principal acidic gases while acidic sulfate aerosols dominate the particulate phase. There appears to be a surface source of NH3 over the pack ice which may originate from decay of dead marine organisms on the ice surface, evolution from surface ocean waters in open ice leads, or release from rotting sea ice. At low altitude over the pack ice this NH34 appears to partially neutralize aerosol acidity. Over sub-Arctic tundra in southeastern Alaska, inputs of marine biogenic sulfur from the Bering Sea appear to be an important source of boundary layer aerosol SO4(2-). The rainwater acidity over the tundra is typical of remote regions.
Document ID
19930032538
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Talbot, R. W.
(New Hampshire Univ. Durham, United States)
Vijgen, A. S.
(Old Dominion Univ. Norfolk, VA, United States)
Harriss, R. C.
(New Hampshire Univ. Durham, United States)
Date Acquired
August 15, 2013
Publication Date
October 30, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: D15
ISSN: 0148-0227
Subject Category
Environment Pollution
Accession Number
93A16535
Distribution Limits
Public
Copyright
Other

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