地球科学进展 ›› 2010, Vol. 25 ›› Issue (11): 1291 -1295. doi: 10.11867/j.issn.1001-8166.2010.11.1291

观测数据应用 上一篇    

大气折射指数的结构参数与北方5~9月降雨的强相关现象
涂钢 1,支克广 1,支平 1,付光极 2,王建平 2   
  1. 1.吉林省气象科学研究所 中高纬度环流系统与东亚季风研究开放实验室,吉林长春 130062;2. 乾安县气象局,吉林乾安 131400
  • 收稿日期:2010-03-16 修回日期:2010-08-24 出版日期:2010-11-10
  • 通讯作者: 涂钢 E-mail:shenxintu@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目“东北农牧交错带地表水分盈亏的监测与评估方法研究”(编号: 40975055)和“基于半干旱区地表—大气相互作用强化观测试验的陆面模式参数优化和物理过程发展研究”(编号: 40775050)资助.

A Significant Relationship between Structure Parameter of the Refractive Index of Air and Rainfall in May-September over Northeast of China

Tu Gang 1,Zhi Keguang 1,Zhi Ping 1,Fu Guangji 2,Wang Jianping 2   

  1. 1.Laboratory of Research Middle-High Latitude Circulation and East Asian Monsoon,Insititute of Meteorological Science of Jilin Province, Changchun 130062,China;
    2. Qian′an County Weather Bureau, Qian′an 131400, China
  • Received:2010-03-16 Revised:2010-08-24 Online:2010-11-10 Published:2010-11-10

基于中荷合作项目“建立关于荒漠化和粮食保障的中国能量与水平衡监测系统”(CEWBMS),在国家卫星气象中心和国家林业总局的支持下,乾安大孔径闪烁仪于1999年10月安装并正式运行。利用2000—2005年5~9月大孔径闪烁仪(LAS)观测的大气折射指数的结构参数C2n,采用独立性检验,证实了C2n的高低与未来32 h是否出现降雨(晴雨)存在显著相关关系。结合乾安气象站的有关气象观测数据,初步选择C2n白天值、C2n夜间值以及C2n的24 h变量作为预报依据,建立基于C2n预报未来32 h晴雨的预报流程;并利用2006年C2n的观测数据,依照预报流程对2006年进行了回报预报试验,正确率为42/47。

As part of Chinese Dutch cooperation on the CEWBMS (Chinese Energy and Water Balance Monitoring System) project, under the direction of China National Satellite Meteorological Center and State Forestry Administration (China National Desertification Monitoring Center), the large aperture scintillometer was first  installed in Qian′an of Jilin province, northeast of China in October 1999. Using the data collected from May to September in 2000—2005 with the large aperture scintillometer, it is confirmed that there is significant relationship between high/low C2n(structure parameter of the refractive index of air) and sunny/rain in next  32h  by means of independent test. The sunny/rain forecasting process is given based on the data including C2n in the midday, C2n in the midnight, and its variation during 24 h. For C2n in 2006,a hind-forecast was done by this forecasting process. The result shows that the accuracy of the forecast is 42/47.

中图分类号: 

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