J4 ›› 2003, Vol. 21 ›› Issue (3): 58-62.

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The Rationing Index of Dust一stormy Weather and Its Application

ZHANG Dong-Bin1, CHANG Ge-Zheng1, WANG Shi-Gong1, YANG De-Bao1, DIAO Yan-Ning2   

  1. 1 .Department of Atmospheric Science .College of Earth and Environmental Sciences .Lanzhou University .Lanzhou  730000 .China
                              2. Meteorological Obserratory of Qinghai Prorince ,}njing  810001 ,China
  • Received:2003-07-22 Revised:2003-09-25 Online:2003-09-30 Published:2003-09-30

沙尘天气的定量化指数及其应用

张冬斌1尚可政1王式功1杨德保1赵燕宁2
  

  1. 1.兰州大学资源环境学院大气科学系,甘肃兰州730000 :2.青海省气象台,青海西宁810001
  • 作者简介:张冬斌(1977),男,兰州大学大气科学系在读硕士研究生,主要从事风沙灾害方面的研究
  • 基金资助:

    国家重点基础研究发展规划项目(62000048703)、中国科学院一日本文部科学省合作项目、国家自然科学基金重大项目 (39990490)和科技部社会公益类项目(中国西北地区沙尘暴监测预警系统)共同资助.

Abstract:

According to "the criterion of surface meteorological observation",visibility and wind speed are important targets to classify dust一stormy weather.  Using the data of visibility and wind speed observed in meteorological stations,we try to construct duststormy weather index to determine the intensity of dust一stormy weather phenomenon,moreover we can measure the strong or weak state of dust一stormy weather happened anywhere.  We have obtained thefollowing conclusions ahe dust一sand index can corre}ond with the intensity of dust一stormy weather ;our analysis to state of dust一stormy weather in different area is in corre}ondence with real weather facts.  The correlative analysis between sand一dust index and urban airpollution index indicated their affinity. It ispossible to build urban air pollution statistical forecasting model with the sand一dust index.

Key words: Sand一dust index, Extinction coefficient, Characteristic intensity, Air pollution forecasting

摘要:

按照《地面气象观测规范》规定,能见度VV与风速V是对沙尘天气进行分级的重要指标。我们利用能见度和风速构造沙尘指数,用以衡量沙尘现象的强弱,并通过它对时间和空间的累积来分析某一地区的沙尘天气发生状况。结果表明:所构造的指数能够代表我国沙尘天气多发区的沙尘天气状况。对上游沙区的沙尘指数与下游邻近城市空气污染指数所作的相关分析显示:二者间存在较为密切的关系。因此利用上游沙区的沙尘指数作为下游邻近城市空气污染预报的重要因子。

关键词: 沙尘指数, 消光系数, 特征强度, 污染预报

CLC Number: