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North-Atlantic Oscillation and regional-scale sea-surge variability in Gulf of Lions during the 20th century

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  • معلومة اضافية
    • Contributors:
      Centre de Recherches de Climatologie (CRC); Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS); International Research Institute for Climate and Society (IRI); Earth Institute at Columbia University; Columbia University New York -Columbia University New York; Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE); Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
    • بيانات النشر:
      CCSD
      American Meteorological Society
    • الموضوع:
      2010
    • Collection:
      Aix-Marseille Université: HAL
    • نبذة مختصرة :
      Article soumis ; International audience ; Sea-surge variations recorded at three tide-gauge stations (Grau-de-la-Dent, Sète, and Port-Vendres) around the Gulf of Lions (Northwest Mediterranean Sea) are mostly locally forced by onshore winds blowing from 90° to 180° related to an atmospheric depression usually centered between the Bay of Biscay and the British Island, which is more prevalent during the negative phase of the North-Atlantic Oscillation (NAO). During the second half of the 20th century, the long-term increase of sea-surge height at Grau-de-la-Dent finds no counterpart in the positive deviation of the NAO. The relationship between the monthly frequency of sea surges > 20 cm at Grau-de-la-Dent and the monthly mean NAO Index significantly strengthens from 1975. This is synchronous with the eastward shift of the two main centers of the NAO (i.e. Iceland low and Azores high) and an increase of the occurrence of depressions near the Bay of Biscay and of surge-related onshore winds in the Gulf of Lions during negative phases of the NAO.
    • الدخول الالكتروني :
      https://hal.science/hal-00447324
      https://hal.science/hal-00447324v1/document
      https://hal.science/hal-00447324v1/file/Ullmann_Moron.pdf
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.C10E7DEB