DOI: 10.1002/2014GL061994
论文题名: Is the residual vertical velocity a good proxy for stratosphere-troposphere exchange of ozone?
作者: Hsu J. ; Prather M.J.
刊名: Geophysical Research Letters
ISSN: 0094-9453
EISSN: 1944-9184
出版年: 2014
卷: 41, 期: 24 起始页码: 9024
结束页码: 9032
语种: 英语
英文关键词: Brewer-Dobson circulation
; climate change
; cross-tropopause ozone flux
; ozone flux diagnostics
; stratosphere-troposphere exchange of ozone
; transformed Eulerian mean
Scopus关键词: Air quality
; Budget control
; Climate change
; Clouds
; Troposphere
; Upper atmosphere
; Velocity
; Brewer-Dobson circulation
; Chemistry transport model
; Interannual variability
; Lowermost stratosphere
; Overturning circulation
; Ozone flux
; Stratosphere-troposphere exchange
; Transformed Eulerian means
; Ozone
; air quality
; annual variation
; atmospheric chemistry
; climate forcing
; flow velocity
; overturn
; ozone
; residual flow
; stratosphere-troposphere interaction
; tracer
英文摘要: Stratosphere-troposphere exchange (STE) of ozone (O3 ) is key in the budget of tropospheric O3 , in turn affecting climate forcing and global air quality. We compare three commonly used diagnostics meant to quantify cross-tropopause O3 fluxes with a Chemistry-Transport Model driven by two distinct European Centre forecast fields. Our reference case calculates accurate, geographically resolved net transport across an isosurface in artificial tracer e90 representing the tropopause. Hemispheric fluxes derived from the ozone mass budget of the lowermost stratosphere yield similar results. Use of the Brewer-Dobson residual vertical velocity as a scaled proxy for ozone flux, however, fails to capture the interannual variability. Thus, the common notion that the strength of stratospheric overturning circulation is a good measure for global STE does not apply to O3 . Climatic variability in the modeled O3 flux needs to be diagnosed directly rather than indirectly through the overturning circulation. Key Points O3 residual flux by BDC does not sync with cross-tropopause O3 fluxesMore accurate diagnostics of ozone STE are needed in climate-chemistry modelsTC and LS methods are suitable for diagnosing STE of ozone ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921790748&doi=10.1002%2f2014GL061994&partnerID=40&md5=6c17424198ddf97b4102dad8e2623272
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6717
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Hsu J.,Prather M.J.. Is the residual vertical velocity a good proxy for stratosphere-troposphere exchange of ozone?[J]. Geophysical Research Letters,2014-01-01,41(24).