DOI: 10.1002/2015GL063372
论文题名: Time scales of response to antisymmetric surface fluxes in an aquaplanet GCM
作者: Woelfle M.D. ; Bretherton C.S. ; Frierson D.M.W.
刊名: Geophysical Research Letters
ISSN: 0094-8769
EISSN: 1944-8500
出版年: 2015
卷: 42, 期: 7 起始页码: 2555
结束页码: 2562
语种: 英语
英文关键词: aquaplanet
; cloud feedback
; GCM
; ITCZ
; time scale
Scopus关键词: Atmospheric radiation
; Climate models
; Feedback
; Heat flux
; Specific heat
; Aquaplanet
; Cloud feedbacks
; GCM
; ITCZ
; Time-scales
; Time measurement
; asymmetry
; clear sky
; climate feedback
; climate forcing
; climate modeling
; cloud radiative forcing
; heat capacity
; heat flux
; intertropical convergence zone
; mixed layer
; planet
; surface flux
; timescale
英文摘要: The intertropical convergence zone (ITCZ) shifts in response to hemispheric asymmetries in extratropical energy forcings. This study investigates the response time scale of this shift in an aquaplanet global climate model coupled to a slab ocean. A steady antisymmetric perturbation is abruptly added to the slab-ocean heat flux convergence in midlatitudes. The time scale of the ITCZ shift scales linearly with the heat capacity of the combined ocean-atmosphere system, and the shift is amplified by subtropical clear-sky radiation and cloud radiative feedbacks. Key Points ITCZ shift time scale increases linearly with model heat capacity Radiative feedbacks amplify ITCZ response to midlatitude heat flux forcing Equilibration time is 8 years for realistic slab-ocean mixed layer depth ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928694587&doi=10.1002%2f2015GL063372&partnerID=40&md5=6af2104123b3d86499335c76e565f145
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8385
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Woelfle M.D.,Bretherton C.S.,Frierson D.M.W.. Time scales of response to antisymmetric surface fluxes in an aquaplanet GCM[J]. Geophysical Research Letters,2015-01-01,42(7).