Document Type


Publication Title

Geophysical Research Letters

Rights and Access Note

This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).

Publication Date


First Page


Last Page


Issue Number


Volume Number


Abstract/ 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].

Citation/Publisher Attribution

Welch, K. A., P. A. Mayewski, and S. I. Whitlow (1993), Methanesulfonic acid in coastal Antarctic snow related to sea‐ice extent, Geophysical Research Letters, 20(6), 443–446, doi:10.1029/93GL00499.

Publisher Statement

© Copyright American Geophysical Union




publisher's version of the published document



Rights Statement

In Copyright - Educational Use Permitted.