| 黄河三门峡水库—小浪底水库间夏季降水量年际变化及水汽形势分析 |
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| 引用本文： | 张胜军,陈怀亮,翁永辉.黄河三门峡水库—小浪底水库间夏季降水量年际变化及水汽形势分析[J].气象科技,2005(Z1). |
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| 作者姓名： | 张胜军 陈怀亮 翁永辉 |
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| 作者单位： | [1]中国气象科学研究院灾害天气国家重点实验室 [2]河南省气象科学研究所 [3]中国气象科学研究院灾害天气国家重点实验室 北京 |
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| 基金项目： | 国家科技部社会公益研究专项(2002DIB10100)资助 |
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| 摘 要： | 利用1960~1999年全国600个站月平均降水资料,对黄河三门峡水库—小浪底水库间的夏季降水总量年际变化进行了统计分析,并应用功率谱诊断方法提取了夏季各月降水的振荡周期。在此基础上,选取了黄河三门峡水库—小浪底水库间降水量多与少的年份,利用NCEP再分析资料研究了其上空的水汽变化以及水汽输送量变化。结果表明,黄河三门峡水库—小浪底水库间降水量多的年份,其上空为较为明显的水汽辐合;降水量比较少的年份,其上空为明显的水汽辐散。选取多雨年(1982年)及少雨年(1997年),结合NCEP再分析资料以及TBB资料,进一步验证了上述结论。
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| 关 键 词： | 降水量 水汽输送 云顶亮温 黄河 |
Interannual Change of Summer Rainfall over Middle and Lower Reaches of Yellow River and Water Distribution Pattern Analysis |
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| Zhang Shengjun Chen Huailiang Weng Yonghui.Interannual Change of Summer Rainfall over Middle and Lower Reaches of Yellow River and Water Distribution Pattern Analysis[J].Meteorological Science and Technology,2005(Z1). |
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| Authors: | Zhang Shengjun Chen Huailiang Weng Yonghui |
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| Institution: | Zhang Shengjun~1 Chen Huailiang~2 Weng Yonghui~1 |
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| Abstract: | By means of summer monthly-average precipitation data of 600 stations from 1960 to 1999,the inter-annual change of total rainfall over the Sanmenxia and Xiaolangdi Reservoir area in the Middle and Lower(Reaches) of Yellow River is analyzed.The oscillation periods of month precipitation in summer are detected with the help of spectral analysis.Hereby,the years with more-than-normal and less-than-normal rainfall over the area are selected,and the quantity of water vapor and water vapor transport the area are calculated by using the NCEP/NCAR reanalysis data set.The results indicate that there existed obvious water convergence over the area in the years with more-than-normal rainfall;and on the contrary,there existed obvious water divergence in the years less-than-normal rainfall.Through two cases studies(1982 and 1997),the conclusion is verified by means of the NCEP/NCAR reanalysis data set and TBB data. |
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| Keywords: | rainfall water transport blackbody temperature Yellow River |
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