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Coastal bathing water quality and climate change - A new information and simulation system for new challenges

机译：沿海沐浴水质量和气候变化-应对新挑战的新信息和模拟系统

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摘要

Human pathogenic micro-organisms in coastal waters receive increasing attention. Climate change with its multiple effects on micro-organisms is one major reason. Changing survival rates, sources and new invasive species are a challenge for bathing water quality management. We present a new online bathing water information system. It includes an alerting system, software to supports communication between authorities, local municipalities and the public as well as simulation tools, based on a 3D-flow and particle tracking model. In scenario simulations with focus on enterococci and Escherichia coli bacteria we show the potential impact of climate change on bathing water quality and the potential relevance as a decision support system in the large, shallow Szczecin lagoon. Szczecin lagoon in the Baltic at the German/Polish border is a pollution hot-spot and frequent bathing prohibitions hamper tourism development. Because of climate change, the risk of river floods is supposed to increase in future. Higher discharge causes an increased transport velocity in the river flow. At the same time, run-off from city surfaces and agricultural land along the river can cause increased E. coli concentrations in all surface waters. As a consequence E. coli and especially Enterococci are transported far into the lagoon and high concentrations can cause bathing water quality problems even on distant beaches. Especially heavy lasting rain in the river basin together with local rain events are a serious threat for bathing water quality in the lagoon and will very likely require a closing of beaches for swimming. Similar to other coastal waters, a wide range of other potentially human pathogenic micro-organisms might create a threat for the lagoon in future.
机译：沿海水域中的人类致病微生物受到越来越多的关注。气候变化及其对微生物的多重影响是主要原因。不断变化的生存率，来源和新的入侵物种是沐浴水质量管理的挑战。我们提出了一个新的在线沐浴水信息系统。它包括一个警报系统，支持当局，地方市政当局与公众之间通信的软件以及基于3D流和粒子跟踪模型的仿真工具。在针对肠球菌和大肠杆菌细菌的情景模拟中，我们展示了气候变化对沐浴水质量的潜在影响以及作为大型浅层什切青泻湖决策支持系统的潜在相关性。位于德国/波兰边境的波罗的海什切青泻湖是一个污染热点，频繁的沐浴禁令阻碍了旅游业的发展。由于气候变化，未来洪水泛滥的风险可能会增加。较高的流量导致河流流量的传输速度增加。同时，城市表面和沿河农田的径流会导致所有地表水中大肠杆菌浓度增加。结果，大肠杆菌，尤其是肠球菌被远远地排入泻湖，即使在遥远的海滩上，高浓度的大肠杆菌也可能导致沐浴水的质量问题。流域特别持久的大雨以及当地的降雨事件严重威胁着泻湖的水质，并很可能需要关闭泳滩。与其他沿海水域相似，未来还会有许多其他潜在的人类致病微生物对泻湖构成威胁。

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  • 来源
    《Ocean & coastal management》 |2014年第11期|53-60|共8页
  • 作者

    Gerald Schernewski; Bianca Schippmann; Tomasz Walczykiewicz;

  • 作者单位

    Leibniz Institute for Baltic Sea Research Warnemuende, Seestrasse 15, D-18119 Rostock, Germany,Marine Science and Technology Center, Klaipeda University, H. Manto 84, LT-92294 Klaipeda, Lithuania;

    Leibniz Institute for Baltic Sea Research Warnemuende, Seestrasse 15, D-18119 Rostock, Germany;

    Institute of Meteorology and Water Management, Ul. Podlesna 61, PL-01-673 Warszawa, Poland;

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