Undersaturation of CH3Br in the Southern Ocean Academic Article

abstract

• Dry mole fractions of methyl bromide (CH3Br) in marine boundary layer air and in air equilibrated with surface water were measured in the Southern Ocean. Saturation anomalies were consistently negative at 367%. The observed undersaturations do not support recently published predictions of highly supersaturated Antarctic waters, but instead suggest a net uptake of atmospheric CH3Br by cold, productive oceans. The observations do not appear to be supported by known chemical degradation rates and present strong evidence for an unidentified, oceanic sink mechanism such as biological breakdown. Our estimate for the global, net, oceanic sink for atmospheric methyl bromide remains negative at 21 (11 to 32) Gg y1.

authors

• Yvon-Lewis, Shari

published proceedings

• GEOPHYSICAL RESEARCH LETTERS

author list (cited authors)

• Lobert, J. M., YvonLewis, S. A., Butler, J. H., Montzka, S. A., & Myers, R. C.

citation count

• 53

complete list of authors

• Lobert, JM||YvonLewis, SA||Butler, JH||Montzka, SA||Myers, RC

publication date

• January 1997

publisher

• American Geophysical Union (AGU)  Publisher

keywords

• 14 Life Below Water
• 37 Earth Sciences
• 3708 Oceanography

Digital Object Identifier (DOI)

• 10.1029/96GL03928

start page

• 171

end page

• 172

volume

• 24

issue

• 2

URL

• http://dx.doi.org/10.1029/96gl03928

user-defined tag

• 14 Life Below Water