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The impacts of climate change and urbanisation on drainage in Helsingborg, Sweden: Combined sewer system

机译：瑞典赫尔辛堡气候变化和城市化对排水的影响：下水道联合系统

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Assessment of the potential impact of climate change on water systems has been an essential. part of hydrological research over the last couple of decades. However, the notion that such assessments should also include technological, demographic and land use changes is relatively recent. In this study, the potential impacts of climate change and continued urbanisation on waste and stormwater flows in the combined sewer of central Helsingborg, South Sweden, have been assessed using a series of DHI MOUSE simulations run with present conditions as well as two climate change scenarios and three progressive urbanisation storylines. At present, overflows of untreated wastewater following heavy rainfalls are a major source of pollution to the coastal receiving waters and there is a worry that increased rainfall could exacerbate the problem. Sewer flows resulting from different urbanisation storylines were simulated for two 10-year periods corresponding to present (1994-2003) and future climates (nominally 2081-2090). In all, 12 simulations were made. Climate change was simulated by altering a high-resolution rainfall record according to the climate-change signal derived from a regional climate model. Urbanisation was simulated by altering model parameters to reflect current trends in demographics and water management. It was found that city growth and projected increases in precipitation, both together and alone, are set to worsen the current drainage problems. Conversely, system renovation and installation of sustainable urban drainage systems (SUDS) has a positive effect on the urban environment in general and can largely allay the adverse impacts of both urbanisation and climate change. (c) 2007 Elsevier B.V. All rights reserved.
机译：评估气候变化对水系统的潜在影响至关重要。最近二十年来水文研究的一部分。但是，这种评估还应包括技术，人口和土地使用变化的观念是相对较新的。在这项研究中，使用一系列DHI MOUSE模拟（在当前条件下以及两个气候变化情景下），评估了气候变化和持续的城市化对瑞典南部赫尔辛堡中部污水处理厂的污水和雨水流量的潜在影响。和三个渐进的城市化故事情节。目前，暴雨后未经处理的废水溢流是沿海接收水域的主要污染源，人们担心降雨增加会加剧这一问题。针对与当前（1994-2003年）和未来气候（标称2081-2090）相对应的两个10年期间，模拟了不同城市化情景下的下水道流量。总共进行了12次模拟。通过根据区域气候模型得出的气候变化信号更改高分辨率的降雨记录来模拟气候变化。通过改变模型参数来模拟城市化，以反映人口和水管理方面的当前趋势。人们发现，城市的增长和预计的降水增加（无论是单独还是一起）都将加剧当前的排水问题。相反，系统的改造和安装可持续城市排水系统（SUDS）总体上对城市环境产生积极影响，并且可以在很大程度上缓解城市化和气候变化的不利影响。 （c）2007 Elsevier B.V.保留所有权利。

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