DOI: 10.1175/JCLI-D-12-00480.1
Scopus记录号: 2-s2.0-84872902568
论文题名: Strong dynamical modulation of the cooling of the polar stratosphere associated with the antarctic ozone hole
作者: Orr A. ; Bracegirdle T.J. ; Hosking J.S. ; Feng W. ; Roscoe H.K. ; Haigh J.D.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 2 起始页码: 662
结束页码: 668
语种: 英语
Scopus关键词: Antarctic ozone hole
; Brewer-Dobson circulation
; Model change
; Model simulation
; Offline
; Ozone depletion
; Polar stratosphere
; Radiative cooling
; Reanalysis
; Southern Hemisphere
; Stratospheric vortex
; Climate change
; Modulation
; Ozone
; Ozone layer
; Vortex flow
; Heating
; climate change
; computer simulation
; cooling
; heating
; ozone depletion
; Southern Hemisphere
; stratosphere
; tropopause
; vortex
英文摘要: A model simulation forced by prescribed ozone depletion shows strong dynamical modulation of the springtime coolingof the polar stratosphere associated with the Antarctic ozone hole. The authors find that in late spring the anomalous radiative cooling in response to ozone depletion is almost canceled above ;100 hPa by an increase in dynamical heating. Between ;300 and ;100 hPa, however, it is enhanced by a reduction in dynamical heating, resulting in the descent of the cold anomaly down to the tropopause. In early summer increased dynamical heating dominates as the radiative cooling diminishes so that the cold anomaly associated with the delayed breakup of the stratospheric vortex is reduced. The anomalousdynamical heating is driven by changes in the Brewer-Dobson circulation arising primarily from the dissipation of resolved-scale waves. The model changes are broadly consistent with trends from reanalysis and offline diagnoses of heating rates using a radiation scheme. These results help one to understand dynamically induced change in the evolution and timing of the stratospheric vortex in recent decades and will help to enable improved simulation of the Southern Hemisphere climate. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52049
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: British Antarctic Survey, Cambridge, United Kingdom; National Centre for Atmospheric Science, University of Leeds, Leeds, United Kingdom; Imperial College London, London, United Kingdom
Recommended Citation:
Orr A.,Bracegirdle T.J.,Hosking J.S.,et al. Strong dynamical modulation of the cooling of the polar stratosphere associated with the antarctic ozone hole[J]. Journal of Climate,2013-01-01,26(2)