Journal article
An improved oceanic budget for methyl chloride
Journal of Geophysical Research, v 118(2), pp 715-725
Feb 2013
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We present results that improve the estimates of the global net sea-to-air flux, global oceanic emission, global oceanic uptake, and partial atmospheric lifetime of methyl chloride (CH (sub 3) Cl) with respect to oceanic loss. This study includes improved parameterizations for solubility and saturation anomaly-sea surface temperature relationships for CH (sub 3) Cl, along with the use of an updated gas transfer velocity from a recent study. By measuring solubilities of CH (sub 3) Cl in pure water and seawater over a temperature range from 0 degrees C to 40 degrees C, we obtained a new solubility function with both temperature and salinity dependencies. We also developed a new parameterization of seasonal CH (sub 3) Cl saturation anomaly (Delta %) as a function of both sea surface temperature and wind speed using data from 10 different cruises with an extensive coverage in the global surface ocean. Using the new solubility function and the new seasonal Delta %-(SST, wind speed) relationships, we estimated the global net sea-to-air flux of CH (sub 3) Cl at 335 (210 to 480) Gg yr (super -1) . For the first time, the global flux of CH (sub 3) Cl was broken into a unidirectional gross emission and a unidirectional gross uptake, which were estimated at 700 (510 to 910) Gg yr (super -1) and -370 (-430 to -300) Gg yr (super -1) . The partial atmospheric lifetime of CH (sub 3) Cl with respect to the oceanic uptake was revised to 12 (10-15) years, resulting in a revision on the atmospheric lifetime of CH (sub 3) Cl from the previous estimate of 1.0 year to 1.2 years. Abstract Copyright (2012), . American Geophysical Union. All Rights Reserved.
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Details
- Title
- An improved oceanic budget for methyl chloride
- Creators
- Lei Hu - BroadwayShari A. Yvon-Lewis - Texas A&M UniversityJames H. ButlerJurgen M. Lobert - Entegris (United States)Daniel B. King
- Publication Details
- Journal of Geophysical Research, v 118(2), pp 715-725
- Publisher
- American Geophysical Union
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000317840700010
- Scopus ID
- 2-s2.0-84878935956
- Other Identifier
- 991020546569204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Oceanography