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Present Wave Climate in the Bay of Biscay: Spatiotemporal Variability and Trends from 1958 to 2001

Present Wave Climate in the Bay of Biscay: Spatiotemporal Variability and Trends from 1958 to 2001 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Climate American Meteorological Society

Present Wave Climate in the Bay of Biscay: Spatiotemporal Variability and Trends from 1958 to 2001

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Publisher
American Meteorological Society
Copyright
Copyright © 2011 American Meteorological Society
ISSN
0894-8755
eISSN
1520-0442
DOI
10.1175/JCLI-D-11-00086.1
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Journal of Climate – American Meteorological Society

Published: Feb 8, 2011

References

  • Numerical modeling of ocean swell contributions to the global wind-wave climate
    Alves
  • Semiempirical dissipation source functions for ocean waves. Part I: Definition, calibration, and validation
    Ardhuin
  • Wave climate changes in the North Atlantic and North Sea
    Bacon
  • A connection between mean wave height and atmospheric pressure gradient in the North Atlantic
    Bacon
  • Classification, seasonality and persistence of low-frequency atmospheric circulation patterns
    Barnston
  • Storm tracks and climate change
    Bengtsson
  • A nearshore wave atlas along the coasts of France based on the numerical modeling of wave climate over 25 years
    Benoit
  • Validation of ocean wind and wave data using triple collocation
    Caires
  • Climatological assessment of reanalysis ocean data
    Caires
  • Projection and analysis of extreme wave climate
    Caires
  • Intraseasonal interaction between the Madden–Julian oscillation and the North Atlantic Oscillation
    Cassou
  • Coupling mechanisms in double sandbar systems. Part 1: Patterns and physical explanation
    Castelle
  • Wave climate variability in the north-east Atlantic Ocean over the last six decades
    Dodet
  • Wave climate evolution in the Bay of Biscay over two decades
    Dupuis
  • Climate change impact on extreme wave conditions in the North Sea: An ensemble study
    Grabemann
  • An overview of the North Atlantic Oscillation
    Hurrell
  • Global extreme wave height variability based on satellite data
    Izaguirre
  • The NCEP/NCAR 40-Year Reanalysis Project
    Kalnay
  • Dynamics and Modelling of Ocean Waves
    Komen
  • The recent increase in North Atlantic wave heights
    Kushnir
  • Teleconnection pattern influence on sea-wave climate in the Bay of Biscay
    Le Cozannet
  • Waves forecast and hincast from global ocean to the beach
    Magne
  • 2-Minute gridded global relief data (ETOPO2v2)
    NGDC
  • Coastal systems and low-lying areas
    Nicholls
  • Analyse de l’évolution morphodynamique de la plage du Truc Vert (Gironde) sur une période décennale
    Parisot
  • A proposed spectral form for fully developed wind seas based on the similarity theory of S. A. Kitaigorodskii
    Pierson
  • The Southern Oscillation index, wave climate, and beach rotation
    Ranasinghe
  • How useful are teleconnection patterns for explaining variability in extratropical storminess?
    Seierstad
  • A global analysis of human settlement in coastal zones
    Small
  • The probable error of a mean
    Student
  • Simulation of late-twenty-first-century changes in wintertime atmospheric circulation over Europe due to anthropogenic causes
    Terray
  • User manual and system documentation of WAVEWATCH III version 3.14
    Tolman
  • The ERA-40 Re-Analysis
    Uppala
  • Changes of extreme wave heights in Northern Hemisphere oceans and related atmospheric circulation regimes
    Wang
  • Trends of Atlantic wave extremes as simulated in a 40-yr wave hindcast using kinematically reanalyzed wind fields
    Wang
  • Climate change signal and uncertainty in projections of ocean wave heights
    Wang
  • North Atlantic Ocean wave climate change scenarios for the twenty-first century
    Wang
  • Variability and predictability of the North Atlantic wave climate
    Woolf
  • A consistent poleward shift of the storm tracks in simulations of 21st century climate
    Yin
  • Validation of mesoscale low-level winds obtained by dynamical downscaling of ERA40 over complex terrain
    Žagar
  • Towards a new gridded bathymetry for storm surge forecasting in the North Sea
    Zijderveld