DOI: 10.1002/2014GL062975
论文题名: Simulating the impact of emissions of brominated very short lived substances on past stratospheric ozone trends
作者: Sinnhuber B.-M. ; Meul S.
刊名: Geophysical Research Letters
ISSN: 0094-8826
EISSN: 1944-8557
出版年: 2015
卷: 42, 期: 7 起始页码: 2449
结束页码: 2456
语种: 英语
英文关键词: bromoform
; ozone hole
; VSLS
Scopus关键词: Bromine
; Chlorine
; Climate models
; Ozone
; Ozone layer
; Upper atmosphere
; Antarctic ozone hole
; Bromoform
; Chemistry-climate models
; Comparison with a standard
; Lowermost stratosphere
; Ozone hole
; Transient simulation
; VSLS
; Loading
; atmospheric chemistry
; climate modeling
; ozone
; pollution monitoring
; simulation
; stratosphere
英文摘要: Bromine from very short lived substances (VSLS), primarily from natural oceanic sources, contributes substantially to the stratospheric bromine loading. This source of stratospheric bromine has so far been ignored in most chemistry climate model calculations of stratospheric ozone trends. Here we present a transient simulation with the chemistry climate model EMAC for the period 1960-2005 including emissions of the five brominated VSLS CHBr3, CH2Br2, CH2BrCl, CHBrCl2, and CHBr2Cl. The emissions lead to a realistic stratospheric bromine loading of about 20 pptv for present-day conditions. Comparison with a standard model simulation without VSLS shows large differences in modeled ozone in the extratropical lowermost stratosphere and in the troposphere. Differences in ozone maximize in the Antarctic Ozone Hole, resulting in more than 20% less ozone when VSLS are included. Even though the emissions of VSLS are assumed to be constant in time, the model simulation with VSLS included shows a much larger ozone decrease in the lowermost stratosphere during the 1979-1995 period and a faster ozone increase during 1996-2005, in better agreement with observed ozone trends than the standard simulation without VSLS emissions. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928705742&doi=10.1002%2f2014GL062975&partnerID=40&md5=cfffe3d045e0cfb689b4466194a4160b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8442
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: Karlsruhe Institute of Technology (KIT), Institute for Meteorology and Climate Research IMK-ASF, Karlsruhe, Germany
Recommended Citation:
Sinnhuber B.-M.,Meul S.. Simulating the impact of emissions of brominated very short lived substances on past stratospheric ozone trends[J]. Geophysical Research Letters,2015-01-01,42(7).