DOI: 10.1175/JCLI-D-15-0503.1
Scopus记录号: 2-s2.0-84977594430
论文题名: Radiative and dynamical influences on polar stratospheric temperature trends
作者: Ivy D.J. ; Solomon S. ; Rieder H.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 13 起始页码: 4927
结束页码: 4938
语种: 英语
Scopus关键词: Budget control
; Greenhouse gases
; Ozone layer
; Radiative transfer
; Temperature
; Upper atmosphere
; Antarctic ozone hole
; Arctic temperature
; Brewer-Dobson circulation
; Polar stratosphere
; Radiation budget
; Radiative temperature
; Radiative transfer model
; Stratospheric temperature
; Ozone
; air temperature
; anthropogenic effect
; climate change
; greenhouse gas
; ozone depletion
; radiation budget
; radiative forcing
; stratosphere
英文摘要: Radiative and dynamical heating rates control stratospheric temperatures. In this study, radiative temperature trends due to ozone depletion and increasing well-mixed greenhouse gases from 1980 to 2000 in the polar stratosphere are directly evaluated, and the dynamical contributions to temperature trends are estimated as the residual between the observed and radiative trends. The radiative trends are obtained from a seasonally evolving fixed dynamical heating calculation with the Parallel Offline Radiative Transfer model using four different ozone datasets, which provide estimates of observed ozone changes. In the spring and summer seasons, ozone depletion leads to radiative cooling in the lower stratosphere in the Arctic and Antarctic. In Arctic summer there is weak wave driving, and the radiative cooling due to ozone depletion is the dominant driver of observed trends. In late winter and early spring, dynamics dominate the changes in Arctic temperatures. In austral spring and summer in the Antarctic, strong dynamical warming throughout the mid- to lower stratosphere acts to weaken the strong radiative cooling associated with the Antarctic ozone hole and is indicative of a strengthening of the Brewer-Dobson circulation. This dynamical warming is a significant term in the thermal budget over much of the Antarctic summer stratosphere, including in regions where strong radiative cooling due to ozone depletion can still lead to net cooling despite dynamical terms. Quantifying the contributions of changes in radiation and dynamics to stratospheric temperature trends is important for understanding how anthropogenic forcings have affected the historical trends and necessary for projecting the future. © 2016 American Meteorological Society. 资助项目: NSF, Norwegian Nurses Organisation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50045
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Wegener Center for Climate and Global Change, University of Graz, Graz, Austria; Institute for Geophysics, Astrophysics, University of Graz, Graz, Austria; Meteorology/Department of Physics, University of Graz, Graz, Austria; Austrian Polar Research Institute, Vienna, Austria
Recommended Citation:
Ivy D.J.,Solomon S.,Rieder H.E.. Radiative and dynamical influences on polar stratospheric temperature trends[J]. Journal of Climate,2016-01-01,29(13)