丰满水库运行对局地气候的影响回顾

发布时间：2019-03-26 19:08

【摘要】：以我国最早建成的位于松花江上游大型水电站丰满水电站为例,统计了水库周边代表性气象站1961—2009年间的温度、降水量和相对湿度等数据,分析了建库后近50年来气候要素变化趋势和特征,并与建库前8年历史文献记录进行对比,以期揭示大型水库建设对局地气候变化的影响。结果表明:丰满水库年均和季均气温呈持续上升趋势,与吉林气象站年平均气温的差值也呈明显上升趋势,冬季的平均温度升高显著;丰满水库库区内年均降水量略有减少,近库区和远库区的年降水量比值呈明显上升趋势;丰满水库运行可能对局地气候中年均最低气温产生影响,并在一定程度上促进近库区降水量增加;年均相对湿度略有减小,总体呈暖干趋势;总云量变化不明显,且水库运行对雾凇景观的影响也不明显。
[Abstract]:Taking Fengman Hydropower Station located in the upper reaches of Songhua River as an example, the data of temperature, precipitation and relative humidity of representative meteorological stations around the reservoir from 1961 to 2009 are calculated. The change trend and characteristics of climate factors in the past 50 years after the establishment of the reservoir are analyzed and compared with the historical records of 8 years before the establishment of the reservoir in order to reveal the impact of the construction of large reservoirs on local climate change. The results show that the annual and seasonal mean temperature of Fengman Reservoir is increasing continuously, and the difference between the annual average temperature of Fengman Reservoir and Jilin Meteorological Station is also obviously increasing, and the average temperature of winter is increasing significantly. The average annual precipitation in the reservoir area of Fengman Reservoir decreased slightly, and the annual precipitation ratio in the near reservoir area and the far reservoir area showed an obvious upward trend. The operation of Fengman Reservoir may affect the annual minimum temperature in local climate, and to a certain extent, promote the increase of precipitation near the reservoir area, and the annual relative humidity decreases slightly, showing the trend of warm and dry as a whole. The change of total cloud cover is not obvious, and the influence of reservoir operation on rime landscape is not obvious.
【作者单位】：国网新源控股有限公司;丰满大坝重建工程建设局;中国电建集团贵阳勘测设计研究院有限公司;
【分类号】：TV697.25

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