Methyl bromide in preindustrial air: Measurements from an Antarctic ice core

• Published in: Journal of Geophysical Research
• Main Authors: Saltzman, Eric S, Aydin, M., De Bruyn, W. J., King, D. B., Yvon-Lewis, S. A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: eScholarship, University of California 2004
• Subjects: Physical Sciences and Mathematics; concentration (composition); ice core; measurement method; methyl bromide; source-sink dynamics; Antarctic; Siple; Siple Dome; West Antarctica; Antarc*; Antarctica
• Online Access: http://www.escholarship.org/uc/item/2fq8x031

This paper presents the first ice core measurements of methyl bromide (CH3Br). Samples from a shallow Antarctic ice core (Siple Dome, West Antarctica), ranging in mean gas dates from 1671 to 1942, had a mean CH3Br mixing ratio of 5.8 ppt. These results extend the existing historical record derived f...