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Sea surface temperature modelling in the Sea of Iroise: assessment of boundary conditions

机译:鸢尾海的海表温度模拟:边界条件的评估

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摘要

The present study investigates the sensitivity of the COupled Hydrodynamical–Ecological model for REgioNal and Shelf seas (COHERENS) to predict sea surface temperature (SST) patterns in the Sea of Iroise (western end of French Brittany) in relation to the spatial and temporal resolutions of open boundary conditions (OBCs). Two sources of daily operational OBCs of temperature are considered, derived from (1) the Mercator Global Ocean and (2) the Iberian Biscay Irish analysis and forecasting systems delivering predictions at spatial resolutions of 1/12° and 1/36°, respectively. Coastal model performance is evaluated by comparing SST predictions with recently available field data collected (1) along the route of a vessel travelling between the coast and the isle of Ushant and (2) at two offshore stations. The comparison is extended to SST spatial distribution derived from remote-sensing observations. The influence of OBC spatial resolution is exhibited in the north-eastern area of the Sea of Iroise in relation to the intrusion of cold surface waters. OBC temporal resolution is found to have a lower impact advocating for the implementation of climatological temperature forcings to predict major SST patterns in the Sea of Iroise.
机译:本研究调查了区域和架子海(COHERENS)的水动力-生态耦合模型对艾罗伊斯海(法国布列塔尼西端)的海表温度(SST)模式相对于时空分辨率的敏感性。开放边界条件(OBC)的数量。考虑了每日工作OBC的两个来源,分别来自(1)墨卡托全球海洋和(2)伊比利亚比斯开爱尔兰分析和预报系统,分别以1/12°和1/36°的空间分辨率进行预测。通过将SST预测与最近收集的现场数据进行比较,来评估沿海模型的性能(1)沿船只在Ushant的海岸和小岛之间航行的航线以及(2)在两个近海站点进行的航行。该比较扩展到了从遥感观测中得出的SST空间分布。与冷地表水的入侵有关,OBC空间分辨率的影响在艾罗伊斯海的东北部地区表现出来。发现OBC时间分辨率对提倡实施气候温度强迫来预测艾罗瓦海中主要SST模式的影响较小。

著录项

  • 来源
    《Ocean Dynamics》 |2013年第7期|849-863|共15页
  • 作者单位

    Laboratoire de Génie Côtier et Environnement (LGCE) Direction Scientifique (DS) Centre d’Etudes Techniques Maritimes Et Fluviales (CETMEF)">(1);

    Laboratoire de Génie Côtier et Environnement (LGCE) Direction Scientifique (DS) Centre d’Etudes Techniques Maritimes Et Fluviales (CETMEF)">(1);

    Laboratoire des Sciences de l’Environnement Marin - UMR 6539 Institut Universitaire Européen de la Mer Place Nicolas Copernic">(2);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    COHERENS; SIRANO; MGO; IBI; SST; Sea of Iroise;

    机译:COHERENS;西拉诺MGO;IBI;SST;鸢尾海;

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