Methanesulfonic Acid in Coastal Antarctic Snow Related to Sea‐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 sea‐ice extent has previously been p...

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Bibliographic Details
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
Antarctic
Southern Ocean
Victoria Land
Antarc*
Antarctica
ice core
Sea ice
Online Access:https://digitalcommons.library.umaine.edu/ers_facpub/189
https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1189&context=ers_facpub
Description
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 sea‐ice extent has previously been proposed as one cause of relatively high methanesulfonic acid (MSA) in glacial‐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 sea‐ice extent (two decades) [Jacka, 1990].

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