DOI: 10.1175/JCLI-D-16-0457.1
Scopus记录号: 2-s2.0-85012284288
论文题名: Changes of the tropical tropopause layer under global warming
作者: Lin P. ; Paynter D. ; Ming Y. ; Ramaswamy V.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 4 起始页码: 1245
结束页码: 1258
语种: 英语
Scopus关键词: Atmospheric temperature
; Budget control
; Carbon dioxide
; Chemical analysis
; Climate change
; Climate models
; Earth atmosphere
; Global warming
; Radiative transfer
; Transistor transistor logic circuits
; Tropics
; Troposphere
; Atmospheric general circulation models
; General circulation model
; Heat budget analysis
; Stratosphere-troposphere coupling
; Stratospheric circulations
; Temperature changes
; Tropical tropopause layers
; Tropopause
; Clouds
; atmospheric general circulation model
; carbon dioxide
; climate change
; global warming
; heat budget
; radiative forcing
; radiative transfer
; stratosphere-troposphere interaction
; tropical meteorology
; tropopause
; troposphere
英文摘要: This paper investigates changes in the tropical tropopause layer (TTL) in response to carbon dioxide increase and surface warming separately in an atmospheric general circulation model, finding that both effects lead to a warmer tropical tropopause. Surface warming also results in an upward shift of the tropopause. A detailed heat budget analysis is performed to quantify the contributions from different radiative and dynamic processes to changes in the TTL temperature. When carbon dioxide increases with fixed surface temperature, a warmer TTL mainly results from the direct radiative effect of carbon dioxide increase. With surface warming, the largest contribution to the TTL warming comes from the radiative effect of the warmer troposphere, which is partly canceled by the radiative effect of the moistening at the TTL. Strengthening of the stratospheric circulation following surface warming cools the lower stratosphere dynamically and radiatively via changes in ozone. These two effects are of comparable magnitudes. This circulation change is the main cause of temperature changes near 63 hPa but is weak near 100 hPa. Contributions from changes in convection and clouds are also quantified. These results illustrate the heat budget analysis as a useful tool to disentangle the radiative-dynamical-chemical-convective coupling at the TTL and to facilitate an understanding of intermodel difference. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49826
Appears in Collections: 气候变化事实与影响
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作者单位: Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Recommended Citation:
Lin P.,Paynter D.,Ming Y.,et al. Changes of the tropical tropopause layer under global warming[J]. Journal of Climate,2017-01-01,30(4)