DOI: 10.1002/2014GL059589
论文题名: Spatially resolved upwelling in the California Current System and its connections to climate variability
作者: Jacox M.G. ; Moore A.M. ; Edwards C.A. ; Fiechter J.
刊名: Geophysical Research Letters
ISSN: 0094-10105
EISSN: 1944-9836
出版年: 2014
卷: 41, 期: 9 起始页码: 3189
结束页码: 3196
语种: 英语
英文关键词: California Current System
; climate variability
; eastern boundary current
; ROMS 4D-Var
; upwelling
; upwelling index
Scopus关键词: Climatology
; Coastal engineering
; California current systems
; Climate variability
; Eastern boundary current
; upwelling
; Upwelling indices
; Velocity
; annual variation
; boundary current
; climate variation
; data assimilation
; nearshore environment
; spatiotemporal analysis
; upwelling
; velocity
; California Current
; Pacific Ocean
英文摘要: A historical analysis of California Current System (CCS) circulation, performed using the Regional Ocean Modeling System with four-dimensional variational data assimilation, was used to study upwelling variability during the 1988-2010 period. We examined upwelling directly from the vertical velocity field, which elucidates important temporal and spatial variability not captured by traditional coastal upwelling indices. Through much of the CCS, upwelling within 50km of the coast has increased, as reported elsewhere. However, from 50 to 200 km offshore, upwelling trends are negative and interannual variability is 180° out of phase with the nearshore signal. This cross-shore pattern shows up as the primary mode of variability in central and northern CCS vertical velocity anomalies, accounting for ∼40% of the total variance. Corresponding time series of the dominant modes in the central and northern CCS are strongly correlated with large-scale climate indices, suggesting that climate fluctuations may alternately favor different biological communities. Key Points Interannual upwelling variability is studied from modeled vertical velocity Nearshore (<50km) and offshore (50-200km) upwelling variability are out of phase Cross-shelf upwelling structure is coupled to large-scale climate variability © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901932623&doi=10.1002%2f2014GL059589&partnerID=40&md5=11c0d8839cb4f7ffc6751582135762ef
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7369
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ocean Sciences, University of California, Santa Cruz, CA, United States
Recommended Citation:
Jacox M.G.,Moore A.M.,Edwards C.A.,et al. Spatially resolved upwelling in the California Current System and its connections to climate variability[J]. Geophysical Research Letters,2014-01-01,41(9).