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DOI10.1126/science.288.5465.500
New observational constraints for atmospheric hydroxyl on global and hemispheric scales
Montzka S.A.; Spivakovsky C.M.; Butler J.H.; Elkins J.W.; Lock L.T.; Mondeel D.J.
发表日期2000
ISSN0036-8075
起始页码500
结束页码503
卷号288期号:5465
英文摘要Dramatic declines in emissions of methyl chloroform (1,1,1- trichloroethane) resulting from the Montreal Protocol provide an unprecedented opportunity to improve our understanding of the oxidizing power of Earth's atmosphere. Atmospheric observations of this industrial gas during the late 1990s yield new insights into the global burden and distribution of the hydroxyl radical. Our results set firm upper limits on the global and Southern Hemispheric lifetimes of methyl chloroform and confirm tile predominance of hydroxyl in the tropics. Our analysis suggests a global lifetime for methyl chloroform of 5.2 (+0.2, -0.3) years, a Southern Hemispheric lifetime of 4.9 (+0.2, -0.3) years, and mean annual concentrations of OH that are 15 ± 10% higher south of the intertropical convergence zone than those north of tills natural mixing boundary between the hemispheres.
英文关键词1,1,1 trichloroethane; hydroxyl radical; atmospheric chemistry; atmospheric pollution; hydroxyl radical; Montreal Protocol; article; atmospheric dispersion; atmospheric transport; oxidation; priority journal; troposphere
语种英语
来源期刊Science
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/244808
作者单位Natl. Oceanic and Atmosph. Admin., Climate Monitoring Diagnostics Lab., 325 Broadway, Boulder, CO 80303, United States; Dept. of Earth and Planet. Sciences, Div. of Eng. and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Coop. Inst. Res. in Environ. Sci., University of Colorado, Boulder, CO 80303, United States
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Montzka S.A.,Spivakovsky C.M.,Butler J.H.,et al. New observational constraints for atmospheric hydroxyl on global and hemispheric scales[J],2000,288(5465).
APA Montzka S.A.,Spivakovsky C.M.,Butler J.H.,Elkins J.W.,Lock L.T.,&Mondeel D.J..(2000).New observational constraints for atmospheric hydroxyl on global and hemispheric scales.Science,288(5465).
MLA Montzka S.A.,et al."New observational constraints for atmospheric hydroxyl on global and hemispheric scales".Science 288.5465(2000).
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