DOI: 10.1175/JCLI-D-14-00188.1
Scopus记录号: 2-s2.0-84920282135
论文题名: The tropical precipitation response to Andes topography and ocean heat fluxes in an aquaplanet model
作者: Maroon E.A. ; Frierson D.M.W. ; Battisti D.S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 1 起始页码: 381
结束页码: 398
语种: 英语
Scopus关键词: Atmospheric movements
; Atmospheric thermodynamics
; Budget control
; Feedback
; Heat flux
; Oceanography
; Precipitation (chemical)
; Precipitation (meteorology)
; Topography
; Transport properties
; Tropics
; Atmosphere-ocean interactions
; Energy budget/balance
; General circulation model
; Geophysical fluid dynamics laboratories
; Hemi-spheric asymmetries
; Intertropical convergence zone
; Northern Hemispheres
; Tropical precipitation
; Rain
; air-sea interaction
; energy balance
; energy budget
; general circulation model
; heat flux
; intertropical convergence zone
; modeling
; precipitation (climatology)
; topographic effect
; Andes
英文摘要: This aquaplanet modeling study using the Geophysical Fluid Dynamics Laboratory Atmospheric Model, version 2.1 (GFDL AM2.1), examines how ocean energy transport and topography influence the location of tropical precipitation. Adding realisticAndes topography regionally displaces tropical rainfall fromthe equator into the Northern Hemisphere, even when the wind-evaporation feedback is disabled. The relative importance of the Andes compared to the asymmetric hemispheric heating of the atmosphere by ocean transport is examined by including idealized and realistic zonally averaged surface heat fluxes (also known as q fluxes) in the slab ocean.A hemispherically asymmetric q flux displaces the tropical rainfall toward the hemisphere receivingthe greatest heating by the ocean. The zonal-mean displacement of rainfall is greater in simulations with a realistic q flux than with a realisticAndes topography. Simulations that add both a q flux and topography displace rainfall farther to the north in the region 120° to the west of theAndes than in simulations that only have a q flux. Cloud and clear-sky radiative feedbacks in the tropics and subtropics of this model both act to amplify the energy flux and the precipitation response to a given hemispheric asymmetry in oceanic forcing. © 2015 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50435
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Maroon E.A.,Frierson D.M.W.,Battisti D.S.. The tropical precipitation response to Andes topography and ocean heat fluxes in an aquaplanet model[J]. Journal of Climate,2015-01-01,28(1)