DOI: 10.1175/JCLI-D-16-0048.1
Scopus记录号: 2-s2.0-84977516277
论文题名: Annual sea level changes on the North American northeast coast: Influence of local winds and barotropic motions
作者: Piecuch C.G. ; Dangendorf S. ; Ponte R.M. ; Marcos M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 13 起始页码: 4801
结束页码: 4816
语种: 英语
Scopus关键词: Atmospheric pressure
; Barometers
; Coastal engineering
; Dynamics
; Gages
; Oceanography
; Tide gages
; Wind stress
; Barotropic flows
; Decadal variability
; Geographic location
; Interannual variability
; North Atlantic Ocean
; Ocean dynamics
; Variability
; Sea level
; annual variation
; barotropic motion
; decadal variation
; oceanic circulation
; sea level change
; tide gauge
; wind stress
; Atlantic Coast [North America]
; Atlantic Ocean
; Atlantic Ocean (North)
; Cape Hatteras
; Hatteras Island
; North Carolina
; United States
英文摘要: Understanding the relationship between coastal sea level and the variable ocean circulation is crucial for interpreting tide gauge records and projecting sea level rise. In this study, annual sea level records (adjusted for the inverted barometer effect) from tide gauges along the North American northeast coast over 1980-2010 are compared to a set of data-assimilating ocean reanalysis products as well as a global barotropic model solution forced with wind stress and barometric pressure. Correspondence between models and data depends strongly on model and location. At sites north of Cape Hatteras, the barotropic model shows as much (if not more) skill than ocean reanalyses, explaining about 50% of the variance in the adjusted annual tide gauge sea level records. Additional numerical experiments show that annual sea level changes along this coast from the barotropic model are driven by local wind stress over the continental shelf and slope. This result is interpreted in the light of a simple dynamic framework, wherein bottom friction balances surface wind stress in the alongshore direction and geostrophy holds in the across-shore direction. Results highlight the importance of barotropic dynamics on coastal sea level changes on interannual and decadal time scales; they also have implications for diagnosing the uncertainties in current ocean reanalyses, using tide gauge records to infer past changes in ocean circulation, and identifying the physical mechanisms responsible for projected future regional sea level rise. © 2016 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50235
Appears in Collections: 气候变化事实与影响
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作者单位: Atmospheric and Environmental Research, Inc., Lexington, MA, United States; Research Institute for Water and Environment, University of Siegen, Siegen, Germany; Mediterranean Institute for Advanced Studies, UIB-CSIC, Esporles, Spain
Recommended Citation:
Piecuch C.G.,Dangendorf S.,Ponte R.M.,et al. Annual sea level changes on the North American northeast coast: Influence of local winds and barotropic motions[J]. Journal of Climate,2016-01-01,29(13)