DOI: 10.1002/2017JC013431
Scopus记录号: 2-s2.0-85044723058
论文题名: Coastal Upwelling Off Southwest Nova Scotia Simulated With a High-Resolution Baroclinic Ocean Model
作者: Chegini F. ; Lu Y. ; Katavouta A. ; Ritchie H.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 4 起始页码: 2318
结束页码: 2331
语种: 英语
英文关键词: coastal upwelling
; high-resolution baroclinic ocean model
; Lagrangian particle tracking
; Scotian Current
; Southwest Nova Scotia
; tide-topography interaction
Scopus关键词: baroclinic motion
; bottom current
; model
; ocean tide
; oceanic current
; seasonal variation
; simulation
; topography
; tracking
; upwelling
; Atlantic Ocean
; Canada
; Gulf of Maine
; Nova Scotia
英文摘要: A high-resolution baroclinic coastal ocean model is applied to study seasonal circulation and upwelling off South West Nova Scotia (SWNS) based on 1 year simulations for 2010. The model reasonably reproduces tidal currents, seasonal hydrography, and circulation from multiyear observations, in consistence with the observed strong seasonal variations of these properties in the study area. The main physical processes affecting circulation are analyzed using numerical experiments, with focus on the effect of tidal and density induced currents on topographic upwelling. It is confirmed that the shoreward near-bottom currents and associated upwelling are tidally induced and persistent throughout the year. It is revealed that these currents have seasonal variability, with cross-isobath component being strong in summer throughout a large area, but weaker and confined to deeper regions in winter. The seasonal variability of Scotian Current is the dominant forcing affecting the variability of onshore bottom currents. Lagrangian particle tracking identifies two major pathways of source waters arriving at the SWNS upwelling region. A large proportion of particles come from the east with the Scotian Current, mostly from the surface layer; and a small portion of water parcels come from a mean depth exceeding 100 m from the Gulf of Maine and Northeast Channel. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114154
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography, Dalhousie University, Halifax, NS, Canada; Leibniz Institute for Baltic Sea Research, Warnemünde, Germany; Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada; Now at University of Liverpool, Liverpool, United Kingdom; Environment and Climate Change Canada, Dartmouth, NS, Canada
Recommended Citation:
Chegini F.,Lu Y.,Katavouta A.,et al. Coastal Upwelling Off Southwest Nova Scotia Simulated With a High-Resolution Baroclinic Ocean Model[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(4)