DOI: 10.1175/JCLI-D-15-0075.1
Scopus记录号: 2-s2.0-84942855249
论文题名: Processes controlling tropical tropopause temperature and stratospheric water vapor in climate models
作者: Hardiman S.C. ; Boutle I.A. ; Bushell A.C. ; Butchart N. ; Cullen M.J.P. ; Field P.R. ; Furtado K. ; Manners J.C. ; Milton S.F. ; Morcrette C. ; O'Connor F.M. ; Shipway B.J. ; Smith C. ; Walters D.N. ; Willett M.R. ; Williams K.D. ; Wood N. ; Lukeabraham N. ; Keeble J. ; Maycock A.C. ; Thuburn J. ; Woodhouse M.T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 16 起始页码: 6516
结束页码: 6535
语种: 英语
Scopus关键词: Advection
; Atmospheric chemistry
; Atmospheric composition
; Atmospheric temperature
; Atmospherics
; Chemistry
; Clouds
; Tropics
; Water vapor
; Cirrus clouds
; Deep convection
; Diabatic heating
; Microphysical property
; Tropical tropopause
; Tropopause
; Upper tropospheric water vapors
; Water vapor concentration
; Climate models
; advection
; atmospheric convection
; cirrus
; climate modeling
; cloud microphysics
; stratosphere
; temperature profile
; tropopause
; water vapor
英文摘要: A warm bias in tropical tropopause temperature is found in the Met Office Unified Model (MetUM), in common with most models from phase 5 of CMIP (CMIP5). Key dynamical, microphysical, and radiative processes influencing the tropical tropopause temperature and lower-stratospheric water vapor concentrations in climate models are investigated using the MetUM. A series of sensitivity experiments are run to separate the effects of vertical advection, ice optical and microphysical properties, convection, cirrus clouds, and atmospheric composition on simulated tropopause temperature and lower-stratospheric water vapor concentrations in the tropics. The numerical accuracy of the vertical advection, determined in the MetUM by the choice of interpolation and conservation schemes used, is found to be particularly important. Microphysical and radiative processes are found to influence stratospheric water vapor both through modifying the tropical tropopause temperature and through modifying upper-tropospheric water vapor concentrations, allowing more water vapor to be advected into the stratosphere. The representation of any of the processes discussed can act to significantly reduce biases in tropical tropopause temperature and stratospheric water vapor in a physical way, thereby improving climate simulations. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50766
Appears in Collections: 气候变化事实与影响
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作者单位: Met Office, Exeter, Devon, United Kingdom; Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; National Centre for Atmospheric Science, Cambridge, United Kingdom; College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom; Commonwealth Scientific and Industrial Research Organisation, Aspendale, VIC, Australia
Recommended Citation:
Hardiman S.C.,Boutle I.A.,Bushell A.C.,et al. Processes controlling tropical tropopause temperature and stratospheric water vapor in climate models[J]. Journal of Climate,2015-01-01,28(16)