Production of methanol, acetaldehyde, and acetone in the Atlantic Ocean
Production of methanol, acetaldehyde, and acetone in the Atlantic Ocean
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DOI：
10.1002/grl.50922
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发表时间：
2013-09-16
影响因子：
5.2
通讯作者：
Nightingale, Philip D.
中科院分区：
文献类型：
--
作者：
Dixon, Joanna L.;Beale, Rachael;Nightingale, Philip D.
The biogeochemistry of oxygenated volatile organic compounds (OVOCs) like methanol, acetaldehyde, and acetone in marine waters is poorly understood. We report the first in situ gross production rates for methanol, acetaldehyde, and acetone of 49-103, 25-98, and 2-26nmolL(-1)d(-1) over contrasting areas of marine productivity, including oligotrophic gyres and eutrophic upwellings. Photochemical production estimates are mostly negligible for methanol, up to 68% for acetaldehyde and up to 100% of gross production rates for acetone. Microbial surface OVOC oxidation to CO2 accounts for between 10-50% and 0.5-13% of the methanol and acetone losses, respectively, but largely control acetaldehyde concentrations (49-100%). Biological lifetimes in a coastal upwelling vary between 1day for acetaldehyde, to approximately 7days for methanol and up to similar to 80days for acetone. In open oceanic environments, the lifetime of acetaldehyde ranges between 2 and 5h, compared to 10-26days for methanol and 5-55days for acetone.
