我国松花江流域和辽河流域降水的长期变化规律和未来趋势分析
LONG-TERMVARIATION PATTERN AND FUTURE TREND OF PRECIPITATION IN THE VALLEYS OF SONGHUAJIANG AND LIAOHE RIVERS
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摘要: 利用1881~2002年我国东北地区的月、季降水资料,采用历史曲线分析、功率谱分析、小波变换等方法,重点分析了松花江流域和辽河流域降水的长期变化规律。结果表明:松花江流域和辽河流域的降水都存在着明显的年代际变化,松花江流域降水以27~30年周期为主,辽河流域降水周期比松花江流域略长,大概为35~38年左右。根据降水自身演变规律及自回归方法预测的结果,估计未来5~10年,松花江流域仍将处于少雨期,辽河流域少雨期维持时间可能会稍长一些。Abstract: Study on the precipitation variation features for the valley s of the Songhuajiang and Liaohe rivers is undertaken by means of a t rend analysis, power spectral method and wavelet transform in terms of the monthly and seasonal precipitation data from 1881 to 2002.Results indicate that a remarkable interdecadal variation is inherent in the precipitation of the target region, dominated by 27-30 (35-38)year periods for the rainfall in the Song hua jiang (Liaohe)valleys.Based on the evolution of the rainfall itself and auto-regression estimationitis inferred that the former (latter)w ill remain in a drier (a still longer rain-deficient)stage in 5-10 years to follow.
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[1] 姜文来.水资源价值论.北京:科学出版社,1999. [2] 赵振国.中国夏季旱涝及环境场.北京:气象出版社, 1999. [3] 周连童, 黄荣辉.关于我国夏季气候年代际变化特征及其可能成因的研究.气候与环境研究, 2003, 8(3):274~290. http://www.cnki.com.cn/Article/CJFDTOTAL-QHYH200303002.htm [4] 陈峪, 黄朝迎.气候变化对东北地区作物生产潜力影响的研究.应用气象学报, 1998, 19(3):314~320. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19980345&flag=1 [5] Shukla J, Mintz Y.The influence of land-surface evaporation on the earth' s climate.Science, 1982, 215 :1498~1501. doi: 10.1126/science.215.4539.1498 [6] Wang Zhiwei,Zhai Panmao.Variation of drought over northern China during 1950 —2000.Journal of Geographical Sciences, 2003, 13(4):480~487. doi: 10.1007/BF02837887 [7] 孙林海, 赵振国.中国东北地区夏季雨型划分及其气候特征分析.国家“ 九五” 重中之重96-908科技项目《我国短 期气候预测系统的研究》之六, 短期气候预测系统的总装与业务化试验研究.北京:气象出版社, 2004.26~31. [8] 魏凤英.现代气候统计诊断与预测技术.北京:气象出版社, 1999. [9] 张存杰, 董安祥, 白虎志, 等.甘肃省河东地区伏旱的小波分析.应用气象学报, 1998, 19(3):291~297. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19980342&flag=1 [10] 谢庄, 曹鸿兴.近百余年北京气候变化的小波分析.气象学报, 2000, 58(3):362~369. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB200003012.htm