DOI: 10.1175/JCLI-D-11-00086.1
Scopus记录号: 2-s2.0-84858609382
论文题名: Present wave climate in the bay of biscay: Spatiotemporal variability and trends from 1958 to 2001
作者: Charles E. ; Idier D. ; Thiébot J. ; Cozannet G.L. ; Pedreros R. ; Ardhuin F. ; Planton S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 6 起始页码: 2020
结束页码: 2039
语种: 英语
Scopus关键词: Interannual variability
; Ocean model
; Sea state
; Teleconnections
; Trends
; Atmospheric pressure
; Climate change
; Ocean currents
; Ocean structures
; Weather forecasting
; Water waves
; annual variation
; climate change
; climate effect
; North Atlantic Oscillation
; Northern Hemisphere
; spatial resolution
; spatiotemporal analysis
; teleconnection
; trend analysis
; wave height
; wave modeling
; weather forecasting
; Atlantic Ocean
; Bay of Biscay
英文摘要: Climate change impacts on wave conditions can increase the risk of offshore and coastal hazards. The present paper investigates wave climate multidecadal trends and interannual variability in the Bay of Biscay during the past decades (1958-2001). Wave fields are computed with a wave modeling system based on the WAVEWATCH III code and forced by 40-yr European Centre for Medium-Range Weather Forecasts Re- Analysis (ERA-40) wind fields. It provides both an extended spatiotemporal domain and a refined spatial resolution over the Bay of Biscay. The validation of the wave model is based on 11 buoys, allowing for the use of computed wave fields in the analysis of mean and extreme wave height trends and variability. Wave height, period, and direction are examined for a large array of wave conditions (by seasons, high percentiles of wave heights, different periods). Several trends for recent periods are identified, notably an increase of summer significant wave height, a southerly shift of autumn extreme wave direction, and a northerly shift of spring extreme wave direction. Wave fields exhibit high interannual variability, with a normalized standard deviation of seasonal wave height greater than 15% in wintertime. The relationship with Northern Hemisphere teleconnection patterns is investigated at regional scale, especially along the coast. It highlights a strong correlation between local wave conditions and the North Atlantic Oscillation and the east Atlantic pattern indices. This relationship is further investigated at the local scale with a new method based on bivariate diagrams, allowing the identification of the type of waves (swell, storm, intermediate waves) impacted. These results are discussed in terms of comparison with previous studies and coastal risk implications. © 2012 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52539
Appears in Collections: 气候变化事实与影响
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作者单位: BRGM, Orléans, France; Ifremer, Plouzané, France; Centre National de Recherches Mé téorologiques, Toulouse, France
Recommended Citation:
Charles E.,Idier D.,Thiébot J.,et al. Present wave climate in the bay of biscay: Spatiotemporal variability and trends from 1958 to 2001[J]. Journal of Climate,2012-01-01,25(6)