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River runoff response to climate changes in Poland (East-Central Europe)

机译:波兰的河流径流对气候变化的响应(中东欧)

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Climate change in Poland is expressed primarily by a decrease in rainfall and an increase in winter air temperatures. The response of river runoff to climate change in Poland is uncertain. The mean annual flows of two major rivers crossing the country (the Vistula and the Oder) observed in the years 1901-2008 reveal the occurrence of periods of wet and dry years. No statistically significant trends were observed. The periodicity of runoff caused by different types of the atmospheric circulation is the only observed effect. Maximum,discharges for 462 water gauges were analysed in the period 1951-2006. During the last 20 to 30 years neither the number, nor the relative magnitude of maximum river discharges for 462 water gauges in Poland have increased (1961-2006). They are even slightly smaller than in 1951-1980. However, a number of absolute maxima occurred in 1997 and 1979. There is a relationship between NAO and river flow -especially during snowmelt season in Carpathian Mountains catchments.
机译:波兰的气候变化主要表现为降雨减少和冬季气温升高。波兰河流径流对气候变化的反应尚不确定。在1901-2008年间观察到的两条穿越该国的主要河流(维斯杜拉河和奥得河)的年均流量揭示了干湿两季的发生。没有观察到统计学上显着的趋势。唯一观察到的影响是由不同类型的大气环流引起的径流周期性。在1951-2006年期间分析了462个水位计的最大流量。在过去的20到30年中,波兰462个水位计的最大河流量的数量和相对大小都没有增加(1961-2006年)。它们甚至比1951年至1980年的还要小。但是,在1997年和1979年出现了一些绝对最大值。NAO与河流流量之间存在关系,尤其是在喀尔巴阡山脉流域的融雪季节。

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