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淮河流域旱涝年水汽收支特征分析

发表时间:2011-07-31  浏览量:1236  下载量:553
全部作者: 霍贝,陆桂华,何海
作者单位: 河海大学水文水资源学院
摘 要: 利用美国国家环境预测中心/国家大气研究中心(NCEP/NCAR)再分析资料对淮河流域旱涝年夏季6月至8月水汽输送通量收支情况进行分析,结果表明:我国东部地区夏季水汽输入主要来自于西边界和南边界,而东边界和北边界是主要的输出边界;淮河流域洪涝年的水汽收支比干旱年有明显增加;淮河流域洪涝年水汽收支的增加主要来源于南北方向上异常水汽通量的辐合,而干旱年水汽收支的减少则是北边界大量异常水汽通量输出的结果;另外,洪涝年从孟加拉湾经中南半岛输送到南海的水汽有所减少,而源自南海本身北上向我国大陆输送的水汽却增加了,干旱年则呈反相位变化。
关 键 词: 水文学及水资源;淮河流域;洪涝年;干旱年;水汽收支
Title: Characteristics of water vapor budget in Huaihe River basin in drought and flood years
Author: HUO Bei, LU Guihua, HE Hai
Organization: College of Hydrology and Water Resources, Hohai University
Abstract: The vapor transportation is analyzed when drought and flood occurred in Huaihe River basin in summer, using NCEP/NCAR reanalysis data. The results show that the water vapor in the East China in summer is mainly from the west and the south, while the vapor transports to the east and the north. The vapor budget in Huaihe River basin in flood years is larger than that in drought years. In flood years, the increase of the vapor budget could be ascribed to the convergence of the abnormal vapor flux in the north�south direction. In drought years, large scales of abnormal vapor transports to the north results in the decrease of the vapor budget. In addition, the vapor from Bay of Bengal to the South China Sea is decreased while the vapor from the South China Sea to the mainland of China is increased in flood years and vice versa in drought years.
Key words: hydrology and water resources; Huaihe River basin; flood years; drought years; water vapor budget
发表期数: 2011年7月第14期
引用格式: 霍贝,陆桂华,何海. 淮河流域旱涝年水汽收支特征分析[J]. 中国科技论文在线精品论文,2011,4(14):1321-1325.
 
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