DOI: 10.1175/JCLI-D-12-00472.1
Scopus记录号: 2-s2.0-84878999097
论文题名: On the variability of wind power input to the oceans with a focus on the subpolar North Atlantic
作者: Zhai X. ; Wunsch C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 11 起始页码: 3892
结束页码: 3903
语种: 英语
Scopus关键词: Atlantic multidecadal oscillations
; Eddy kinetic energy
; North Atlantic Ocean
; North Atlantic oscillations
; Physical mechanism
; Strong dependences
; Subpolar North Atlantic
; Variability of wind power
; Atmospheric pressure
; Climate change
; Kinetics
; Stress concentration
; Wind power
; Oceanography
; accuracy assessment
; air-sea interaction
; Atlantic Multidecadal Oscillation
; database
; eddy
; kinetic energy
; North Atlantic Oscillation
; synoptic meteorology
; trend analysis
; wind power
; Atlantic Ocean
; Atlantic Ocean (North)
; Southern Ocean
英文摘要: Variations in power input to the ocean using a recent global "reanalysis" extending back to 1871 show a strong trend in the net power input since then, a trend dominated by the Southern Ocean region. This trend is interpreted as a spurious result of the changing observational system. Focusing therefore on the North Atlantic Ocean, where the database is somewhat more secure, it is found that the input power in the subpolar North Atlantic varies significantly in time, showing a strong relationship to the North Atlantic Oscillation (NAO). During positive NAO index years, power input is greater owing to enhanced synoptic activity. Furthermore, cumulative power input to the subpolar North Atlantic is found to correlate significantly with both the eddy kinetic energy there and the Atlantic multidecadal oscillation (AMO), although the physical mechanism at work remains unclear. The assumption that the changing ocean can be neglected relative to the changing atmosphere in calculating the power input is found to be a usefully accurate approximation over the two decades for which changing ocean state estimates are available. Strong dependence on synoptic weather systems of monthly-mean stress distributions implies that past and future climate simulations must account properly for changes in weather systems, not just the large-scale variations. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51848
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom; Department of Earth Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United Kingdom
Recommended Citation:
Zhai X.,Wunsch C.. On the variability of wind power input to the oceans with a focus on the subpolar North Atlantic[J]. Journal of Climate,2013-01-01,26(11)