DOI: 10.1002/2016GL068344
论文题名: Stratospheric ozone chemistry feedbacks are not critical for the determination of climate sensitivity in CESM1(WACCM)
作者: Marsh D.R. ; Lamarque J.-F. ; Conley A.J. ; Polvani L.M.
刊名: Geophysical Research Letters
ISSN: 0094-9067
EISSN: 1944-8798
出版年: 2016
卷: 43, 期: 8 起始页码: 3928
结束页码: 3934
语种: 英语
英文关键词: 4×CO2
; CESM
; climate senstitivity
; feedbacks
; ozone
; WACCM
Scopus关键词: Atmospheric chemistry
; Atmospheric radiation
; Carbon dioxide
; Earth (planet)
; Earth atmosphere
; Feedback
; Ozone
; Ozone layer
; CESM
; Chemical constituents
; Climate sensitivity
; Climate senstitivity
; Radiative transfer calculations
; Stratospheric ozone chemistry
; WACCM
; Whole atmosphere community climate models
; Climate models
; atmospheric chemistry
; carbon dioxide
; chemical composition
; climate feedback
; climate modeling
; error analysis
; global climate
; ozone
; radiative transfer
; sensitivity analysis
; stratosphere
英文摘要: The Community Earth System Model-Whole Atmosphere Community Climate Model (CESM1-WACCM) is used to assess the importance of including chemistry feedbacks in determining the equilibrium climate sensitivity (ECS). Two 4×CO2 model experiments were conducted: one with interactive chemistry and one with chemical constituents other than CO2 held fixed at their preindustrial values. The ECS determined from these two experiments agrees to within 0.01 K. Similarly, the net feedback parameter agrees to within 0.01 W m-2 K-1. This agreement occurs in spite of large changes in stratospheric ozone found in the simulation with interactive chemistry: a 30% decrease in the tropical lower stratosphere and a 40% increase in the upper stratosphere, broadly consistent with other published estimates. Off-line radiative transfer calculations show that ozone changes alone account for the difference in radiative forcing. We conclude that at least for determining global climate sensitivity metrics, the exclusion of chemistry feedbacks is not a critical source of error in CESM. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992292114&doi=10.1002%2f2016GL068344&partnerID=40&md5=1d1a6f5eb47d1b8a4bc479f895a874e4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10030
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: National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Marsh D.R.,Lamarque J.-F.,Conley A.J.,et al. Stratospheric ozone chemistry feedbacks are not critical for the determination of climate sensitivity in CESM1(WACCM)[J]. Geophysical Research Letters,2016-01-01,43(8).