Methanesulfonic Acid in Coastal Antarctic Snow Related to Seaâ€ice Extent

Proxy records of biogenic sulfur gas obtained from ice cores suggest that variability in marine biogenic sulfur emissions may reflect changes in climate [Saigne and Legrand, 1987; Legrand et al., 1988, Legrand et al., 1991; Anderson and Charlson, 1991]. Increased seaâ€ice extent has previously been...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Welch, K. A., Mayewski, Paul Andrew, Whitlow, S. I.
Format: Text
Language:unknown
Published: DigitalCommons@UMaine 1993
Subjects:
Geochemistry
Glaciology
Climate Change
Climate
Earth Sciences
Hydrology
Oceanography
Antarc*
Antarctic
Antarctica
ice core
Southern Ocean
Victoria Land
Online Access:https://digitalcommons.library.umaine.edu/ers_facpub/189
https://doi.org/10.1029/93GL00499
https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1189/viewcontent/methanesulfonicacid.pdf
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Summary:Proxy records of biogenic sulfur gas obtained from ice cores suggest that variability in marine biogenic sulfur emissions may reflect changes in climate [Saigne and Legrand, 1987; Legrand et al., 1988, Legrand et al., 1991; Anderson and Charlson, 1991]. Increased seaâ€ice extent has previously been proposed as one cause of relatively high methanesulfonic acid (MSA) in glacialâ€age ice core samples [Gibson et al., 1990]. We have analyzed MSA, one of the oxidation products of the biogenic sulfur gas dimethylsulfide [Hatakeyama et al., 1985], from snowpit samples recovered from a coastal site in Southern Victoria Land, Antarctica. Time series of MSA correlate significantly with the longest continuous record available of Southern Ocean seaâ€ice extent (two decades) [Jacka, 1990].

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