DOI: 10.1175/JCLI-D-15-0448.1
Scopus记录号: 2-s2.0-84957827932
论文题名: On anomalous ocean heat transport toward the Arctic and associated climate predictability
作者: Årthun M. ; Eldevik T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 2 起始页码: 689
结束页码: 704
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Climatology
; Enthalpy
; Heat flux
; Heat transfer
; Oceanography
; Surface waters
; Atmosphere-ocean interactions
; Climate prediction
; Decadal variability
; Ocean circulation
; Variability
; Climate models
; air-sea interaction
; atmospheric circulation
; climate modeling
; climate prediction
; decadal variation
; heat transfer
; oceanic circulation
; sea surface temperature
; Arctic
; Arctic Ocean
; Atlantic Ocean
; Atlantic Ocean (North)
; Norwegian Sea
英文摘要: A potential for climate predictability is rooted in anomalous ocean heat transport and its consequent influence on the atmosphere above. Here the propagation, drivers, and atmospheric impact of heat anomalies within the northernmost limb of the Atlantic meridional overturning circulation are assessed using a multicentury climate model simulation. Consistent with observation-based inferences, simulated heat anomalies propagate from the eastern subpolar North Atlantic into and through the Nordic seas. The dominant time scale of associated climate variability in the northern seas is 14 years, including that of observed sea surface temperature and modeled ocean heat content, air-sea heat flux, and surface air temperature. A heat budget analysis reveals that simulated ocean heat content anomalies are driven by poleward ocean heat transport, primarily related to variable volume transport. The ocean's influence on the atmosphere, and hence regional climate, is manifested in the model by anomalous ocean heat convergence driving subsequent changes in surface heat fluxes and surface air temperature. The documented northward propagation of thermohaline anomalies in the northern seas and their consequent imprint on the regional atmosphere-including the existence of a common decadal time scale of variability-detail a key aspect of eventual climate predictability. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50201
Appears in Collections: 气候变化事实与影响
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作者单位: Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway
Recommended Citation:
Årthun M.,Eldevik T.. On anomalous ocean heat transport toward the Arctic and associated climate predictability[J]. Journal of Climate,2016-01-01,29(2)