Methanesulfonic acid in coastal Antarctic snow related to sea-ice extent
Article first published online: 7 DEC 2012
Copyright 1993 by the American Geophysical Union.
Geophysical Research Letters
Volume 20, Issue 6, pages 443–446, 19 March 1993
How to Cite
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 22 JAN 1993
- Manuscript Received: 27 OCT 1992
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].