长江流域资源与环境 >> 2014, Vol. 23 >> Issue (s): 21-.doi: 10.11870/cjlyzyyhj2014Z1004

• 自然资源 • 上一篇    下一篇

青藏高原夏季水汽输送特征分析

王彬宇,范广洲,周定文   

  1. (成都信息工程学院大气科学学院高原大气与环境四川省重点实验室,四川 成都 610225)
  • 出版日期:2014-11-26

CHARACTERISTICS OF MOISTURE TRANSPORT IN SUMMER OVER THE TIBETAN PLATEAU

WANG Binyu,FAN Guangzhou,ZHOU Dingwen   

  1. (Academy of Atmospheric Sciences,Center for Plateau Atmospheric and Environmental Research,
    Chengdu University of Information Technology,Chengdu 610225,China)
  • Online:2014-11-26

摘要:

利用NCEP/NCAR逐日及月平均再分析资料,采用高斯滤波、EOF分析、合成分析、相关分析等方法对50年来青藏高原夏季水汽输送的特征进行了分析。结果表明:青藏高原夏季各层的水汽输送具有其独特性。高原中东部是华北及我国中东部地区高空水汽的重要来源,华南及长江中下游地区高空的水汽主要来源于南海地区。高原的平均流输送与总水汽输送具有基本相同的分布特征,瞬变波输送的经向性非常强,平均流输送比瞬变波输送大一个量级。平均流输送对我国西南和中东部地区高空的水汽含量起重要作用,瞬变波输送主要影响高原北部及我国华北地区高空的水汽含量。EOF分析反映了高原水汽输送的不同方式,EOF1反映了夏季高原地区的西北风水汽输送距平。大约在1976年以前,西北风输送正异常,1976年以后,西北风输送负异常,即西北风输送显著减弱。EOF2主要表现为夏季高原地区西南风的水汽输送距平。大约在1980年以后,西南风的水汽输送正异常。1980年以前,西南风的水汽输送负异常,即西南风输送减弱

Abstract:

We use a Gauss filter,EOF analysis,synthetic analysis,correlation analysis and other methods to analyze the characteristics of moisture transport in summer over the Tibetan Plateau in recent 50 years based on the NCEP/NCAR mean daily and monthly reanalysis data.The results showed that moisture transport in summer over the Tibetan Plateau in the layers had its own uniqueness.Moisture transport of the South China Sea and the eastern region of the Tibetan Plateau had an important impact on China mainland highaltitude water vapor,the water vapor of the Southern China and the middle and lower reaches of the Yangtze River on high altitude from the South China Sea area and the water vapor of the North China and the middle east of China on high altitude from East Central Plateau.The mean circulation transport and moisture transport had the same characteristics approximately.The longitudinal of transient eddy transport was very strong on the Tibetan Plateau,which was much stronger than its zonal transport.The mean circulation transport was one magnitude larger than transient eddy transport.The mean circulation transport influenced mainly moisture content of the eastern and southwestern regions in China,while the transient eddy transport influenced the north of China.The EOF analysis of the moisture transport showed that,EOF1 reflected the characteristics of the northwest wind transport that before about 1976 were positive anomaly,but weakened significantly after 1976.EOF2 reflected the characteristics of southwest wind transport that after about 1980 were positive anomaly,while weakened at other times

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 李 娜,许有鹏, 陈 爽. 苏州城市化进程对降雨特征影响分析[J]. 长江流域资源与环境, 2006, 15(3): 335 -339 .
[2] 张 政, 付融冰| 杨海真, 顾国维. 水量衡算条件下人工湿地对有机物的去除[J]. 长江流域资源与环境, 2007, 16(3): 363 .
[3] 孙维侠, 赵永存, 黄 标, 廖菁菁, 王志刚, 王洪杰. 长三角典型地区土壤环境中Se的空间变异特征及其与人类健康的关系[J]. 长江流域资源与环境, 2008, 17(1): 113 .
[4] 许素芳,周寅康. 开发区土地利用的可持续性评价及实践研究——以芜湖经济技术开发区为例[J]. 长江流域资源与环境, 2006, 15(4): 453 -457 .
[5] 郝汉舟, 靳孟贵, 曹李靖, 谢先军. 模糊数学在水质综合评价中的应用[J]. 长江流域资源与环境, 2006, 15(Sup1): 83 -87 .
[6] 刘耀彬, 李仁东. 现阶段湖北省经济发展的地域差异分析[J]. 长江流域资源与环境, 2004, 13(1): 12 -17 .
[7] 陈永柏,. 三峡工程对长江流域可持续发展的影响[J]. 长江流域资源与环境, 2004, 13(2): 109 -113 .
[8] 时连强,李九发,应 铭,左书华,徐海根. 长江口没冒沙演变过程及其对水库工程的响应[J]. 长江流域资源与环境, 2006, 15(4): 458 -464 .
[9] 翁君山,段 宁| 张 颖. 嘉兴双桥农场大气颗粒物的物理化学特征[J]. 长江流域资源与环境, 2008, 17(1): 129 .
[10] 王书国,段学军,姚士谋. 长江三角洲地区人口空间演变特征及动力机制[J]. 长江流域资源与环境, 2007, 16(4): 405 .