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Photoproduction of carbonyl sulfide in south Pacific Ocean waters as a function of irradiation wavelengthCarbonly sulfide (OCS) photoproduction rates were measured at selected wavelengths of ultraviolet light between 297 and 405 nm in sea water samples from the southern Pacific Ocean. Near-surface and column production rate spectra for natural sunlit waters were calculated using sea-surface sunlight data measured near the austral summer solstice. These plots show that photoproduction rates are at a maximum at 313 nm in tropical waters and at 336 nm in Antarctic waters. Tropical surface and column rates were found to be 68 pM/day and 360 nmol/sq m/day, respectively, and Antarctic surface and column rates were found to be 101 pM/day and 620 nmol/sq m/day, respectively. A high degree of variability was observed between photoproduction rates from different ocean regions, with coastal rates being the highest, suggesting that natural environmental variability is an important factor. Photoproduction rates at 297 nm were found to be constant at individual locations with increasing irradiation time. Relative photoproduction rates from this work are compared to previously measured rates from coastal sea water.
Document ID
19950045276
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Weiss, Peter S.
(Univ. of Washington, Seattle, WA United States)
Andrews, Steven S.
(Woods Hole Oceanographic Inst. Woods Hole, MA, United States)
Johnson, James E.
(NOAA, Seattle, WA United States)
Zafiriou, Oliver C.
(Woods Hole Oceanographic Inst. Woods Hole, MA, United States)
Date Acquired
August 16, 2013
Publication Date
February 1, 1995
Publication Information
Publication: Geopysical Research Letters
Volume: 22
Issue: 3
ISSN: 0094-8276
Subject Category
Oceanography
Accession Number
95A76875
Funding Number(s)
CONTRACT_GRANT: NSF OCE-91-5608
CONTRACT_GRANT: N00014-91-5-1258
CONTRACT_GRANT: NAGW-2431
Distribution Limits
Public
Copyright
Other

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