DOI: 10.1002/2015GL064709
论文题名: First observations, trends, and emissions of HCFC-31 (CH2ClF) in the global atmosphere
作者: Schoenenberger F. ; Vollmer M.K. ; Rigby M. ; Hill M. ; Fraser P.J. ; Krummel P.B. ; Langenfelds R.L. ; Rhee T.S. ; Peter T. ; Reimann S.
刊名: Geophysical Research Letters
ISSN: 0094-9582
EISSN: 1944-9313
出版年: 2015
卷: 42, 期: 18 起始页码: 7817
结束页码: 7824
语种: 英语
英文关键词: new compound
Scopus关键词: Atmospheric movements
; Chemistry transport model
; Global emissions
; In-situ analysis
; Intermediate product
; Manufacturing process
; new compound
; Northern Hemispheres
; Production methods
; Atmospheric chemistry
; atmospheric chemistry
; emission
; global change
; landfill
; two-dimensional modeling
英文摘要: We report the first multiyear atmospheric record of HCFC-31 (CH2ClF), based on flask samples and in situ analyses of air from both hemispheres. Although HCFC-31 has never been produced in large amounts, observed mole fractions in the Northern Hemisphere increased from 2000 onward, reaching 170 ppq (parts per quadrillion, 10-15) in 2011-2012 before decreasing rapidly. By combining our observations with a two-dimensional atmospheric chemistry-transport model, we infer an increase in global emissions from 240- t- yr-1 in 2000 to 840- t- yr-1 in 2011-2012, followed by a relatively fast decline to 570- t- yr-1 in 2014. Emissions of HCFC-31 originate most probably from intermediate product release during the manufacturing process of HFC-32 (CH2F2). The rapid decline in recent years could be due to changes in production methods rather than declines in diffusive sources such as landfills or HCFC-31 contaminations in merchandised HFC-32. Key Point First observations of HCFC-31 in the atmosphere © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945231562&doi=10.1002%2f2015GL064709&partnerID=40&md5=df0c6d83b83279415d401106fb287e02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9197
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Laboratory for Air Pollution and Environmental Technology, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
Recommended Citation:
Schoenenberger F.,Vollmer M.K.,Rigby M.,et al. First observations, trends, and emissions of HCFC-31 (CH2ClF) in the global atmosphere[J]. Geophysical Research Letters,2015-01-01,42(18).