DOI: 10.1175/JCLI-D-13-00021.1
Scopus记录号: 2-s2.0-84885332939
论文题名: The spatial structure of the annual cycle in surface temperature: Amplitude, phase, and lagrangian history
作者: Mckinnon K.A. ; Stine A.R. ; Huybers P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 20 起始页码: 7852
结束页码: 7862
语种: 英语
Scopus关键词: Atmospheric circulation
; Climatological annual cycle
; Energy balance models
; Lagrangian trajectories
; Simple Physical Models
; Surface air temperatures
; Surface temperatures
; Trajectory modeling
; Atmospheric temperature
; Lagrange multipliers
; Oceanography
; air temperature
; atmospheric circulation
; climate cycle
; climate modeling
; energy balance
; ensemble forecasting
; Lagrangian analysis
; spatial analysis
; surface temperature
英文摘要: The climatological annual cycle in surface air temperature, defined by its amplitude and phase lag with respect to solar insolation, is one of the most familiar aspects of the climate system. Here, the authors identify three first-order features of the spatial structure of amplitude and phase lag and explain them using simple physical models. Amplitude and phase lag 1) are broadly consistent with a land and ocean end-member mixing model but 2) exhibit overlap between land and ocean and, despite this overlap, 3) show a systematically greater lag over ocean than land for a given amplitude. Based on previous work diagnosing relative ocean or land influence as an important control on the extratropical annual cycle, the authors use a Lagrangian trajectory model to quantify this influence as the weighted amount of time that an ensemble of air parcels has spent over ocean or land. This quantity explains 84% of the space-time variance in the extratropical annual cycle, as well as features 1 and 2. All three features can be explained using a simple energy balance model with land and ocean surfaces and an advecting atmosphere. This model explains 94% of the space-time variance of the annual cycle in an illustrative midlatitude zonal band when incorporating the results of the trajectory model. The aforementioned features of annual variability in surface air temperature thus appear to be explained by the coupling of land and ocean through mean atmospheric circulation. © 2013 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/51615
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
Recommended Citation:
Mckinnon K.A.,Stine A.R.,Huybers P.. The spatial structure of the annual cycle in surface temperature: Amplitude, phase, and lagrangian history[J]. Journal of Climate,2013-01-01,26(20)