| 南水北调西线引水区与黄河上游降水过程的水汽特征分析 |
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| 引用本文： | 文莉娟,吕世华,韦志刚,李锁锁,李振朝,高治定,慕平,雷鸣,宋伟华.南水北调西线引水区与黄河上游降水过程的水汽特征分析[J].冰川冻土,2006,28(2):157-163. |
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| 作者姓名： | 文莉娟 吕世华 韦志刚 李锁锁 李振朝 高治定 慕平 雷鸣 宋伟华 |
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| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000
2. 黄河水利委员会,勘测规划设计有限公司,河南,郑州,450003 |
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| 基金项目： | 科技部科技攻关项目西部开发科技行动
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黄河水利委员会委托项目 |
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| 摘 要： | 利用NCEP再分析资料,分析了南水北调西线引水地区和黄河上游的可降水量、水汽通量、水汽通量散度和该区域的流场.结果表明:在5~9月间,该地区可降水量7月最大,其次为8月、6月、9月,最小为5月;水汽通量主要从南边界获得,北边界存在较稳定的强度不大的净收入,西边界不太稳定,会出现负收入.研究区域上空600 hPa水汽通量主要为辐合,风场散度对水汽通量散度的贡献最大;向研究区域输送的水汽在低层既有直接从孟加拉湾输入,又有从孟加拉湾经中南半岛北部绕过来的,而高层则基本从孟加拉湾直接输入.
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| 关 键 词： | 水汽 水汽通量 水汽通量散度 降水过程 南水北调西线工程 |
| 文章编号： | 1000-0240(2006)02-0157-07 |
| 收稿时间： | 07 10 2005 12:00AM |
| 修稿时间： | 10 7 2005 12:00AM |
Analysis of Water Vapor Characteristics of the Precipitation in the South to North Water Transfer Areas |
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| WEN Li-juan,L Shi-hua,WEI Zhi-gang,LI Suo-suo,LI Zhen-chao,GAO Zhi-ding,MU Ping,LEI Ming,SONG Wei-hua.Analysis of Water Vapor Characteristics of the Precipitation in the South to North Water Transfer Areas[J].Journal of Glaciology and Geocryology,2006,28(2):157-163. |
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| Authors: | WEN Li-juan L Shi-hua WEI Zhi-gang LI Suo-suo LI Zhen-chao GAO Zhi-ding MU Ping LEI Ming SONG Wei-hua |
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| Institution: | 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China, 2. Yellow River Engineering Consulting Company, Zhengzhou Henan 450003, China |
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| Abstract: | Using the NCEP reanalysis data,the precipitable water,vapor flux,divergence of vapor flux and stream fields in the South to North Water Transfer areas of western China were analyzed.The results showed that from May to September,the maximum precipitable water was in July,followed by August,and then by June and September.The vapor flux inpoured into the studied area mostly from the south boundary,from the north boundary steadily and weakly and from the west boundary irregularly.Sometimes,there was outflow.The vapor flux at 600 hPa was almost converged,which was mainly caused by the convergence of wind.At the lower levels vapor came directly and indirectly from the Bay of Bengal.At the higher levels it mainly came directly from the Bay of Bengal. |
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| Keywords: | water vapor vapor flux divevgence of vapor flux precipitation process the South to North Water Transfer |
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