DOI: 10.1002/jgrd.50226
论文题名: Evaluation of whole atmosphere community climate model simulations of ozone during arctic winter 2004-2005
作者: Brakebusch M. ; Randall C.E. ; Kinnison D.E. ; Tilmes S. ; Santee M.L. ; Manney G.L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 6 起始页码: 2673
结束页码: 2688
语种: 英语
Scopus关键词: Atmospheric chemistry
; Chlorine
; Climate models
; Ozone
; Ozone layer
; Earth observing system microwave limb sounders
; Heterogeneous chemistry
; Heterogeneous processing
; Lowermost stratosphere
; Sensitivity studies
; Stratospheric ozone
; Supercooled ternary solutions
; Whole atmosphere community climate models
; Computer simulation
; arctic environment
; atmospheric chemistry
; climate modeling
; data set
; halogen
; ozone
; polar vortex
; stratosphere
; supercooling
; temporal analysis
; winter
; Arctic
英文摘要: [1] The work presented here evaluates polar stratospheric ozone simulations from the Whole Atmosphere Community Climate Model (WACCM) for the Arctic winter of 2004-2005. We use the Specified Dynamics version of WACCM (SD-WACCM), in which temperatures and winds are nudged to meteorological assimilation analysis results. Model simulations of ozone and related constituents generally compare well to observations from the Earth Observing System Microwave Limb Sounder (MLS). At most times, modeled ozone agrees with MLS data to within ~10%. However, a systematic high bias in ozone in the model of ~18% is found in the lowermost stratosphere in March. We attribute most of this ozone bias to too little heterogeneous processing of halogens late in the winter. We suggest that the model under-predicts ClONO2 early in the winter, which leads to less heterogeneous processing and too little activated chlorine. Model HCl could also be overestimated due to an underestimation of HCl uptake into supercooled ternary solution (STS) particles. In late winter, the model overestimates gas-phase HNO3 , and thus NOy, which leads to an over-prediction of ClONO2 (under-prediction of activated chlorine). A sensitivity study, in which temperatures for heterogeneous chemistry reactions were reduced by 1.5 K, shows significant improvement of modeled ozone. Chemical ozone loss is inferred from the MLS observations using the pseudo-passive subtraction approach. The inferred ozone loss using this method is in agreement with or less than previous independent results for the Arctic winter of 2004-2005, reaching 1.0 ppmv on average and up to 1.6 ppmv locally in the polar vortex. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63853
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Sciences, Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder, Boulder, CO, United States; Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; New Mexico Institute of Mining and Technology, Socorro, NM, United States; North West Research Associates, Socorro, NM, United States
Recommended Citation:
Brakebusch M.,Randall C.E.,Kinnison D.E.,et al. Evaluation of whole atmosphere community climate model simulations of ozone during arctic winter 2004-2005[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(6)