北京地区沙尘天气的某些特征分析  

Some Characteristics of Dust Storm Weather Affecting Beijing

作　　者：郑新江[1] 杨义文[2] 李云[1] 

机构地区：[1]中国气象局国家卫星气象中心,北京100081 [2]中国气象局国家气候中心,北京100081

出　　处：《气候与环境研究》2004年第1期14-23,共10页Climatic and Environmental Research

基　　金：国家财政部"西北土壤水分;沙尘暴监测预测研究"项目 (Y0 10 1)资助

摘　　要：利用近几年来气象卫星对沙尘天气的监测结果 ,分析了影响北京地区沙尘天气的一些特征 ,得到以下结果 :(1 )影响北京地区沙尘的源地可分为 3类 :第 1类沙尘起源于蒙古国南部地区 ,第 2类沙尘起源于我国内蒙古地区 ,第 3类沙尘起源于北京本地。(2 )影响北京地区的沙尘路径大致有 3条 :第 1条路径 ,蒙古国南部—内蒙古浑善达克沙地—河北省西北部—北京地区 ;第 2条路径 ,蒙古国南部—内蒙古朱日和一带—河北省西部—北京地区 ;第 3条路径 ,山西高原—河北—北京地区。 (3)沙尘在移动过程中 ,强度是不断变化的。 (4)大气环流是制约沙尘天气的直接原因。Some features of the dust weather affecting Beijing are analyzed. The results show three kinds of dust storm sources that influence Beijing. The first one is in the southern part of Mongolia, the second is in the Inner Mongolia, and the third is in Beijing area. The routes are mainly three. The first one is the southern part of Mongolia-the Hunshandake desert in the Inner Mongolia-the northwestern part of the Hebei Province-Beijing area, the second is the southern part of Mongolia-the Zhurihe area in the Inner Mongolia-the western part of the Hebei Province-Beijing area, and the third is Shanxi tableland-Hebei Province-Beijing area. The intensity of dust storms changes while they are moving. The direct reasons that control dust storm weather are atmospheric circulations.

关 键 词：气象卫星 沙尘暴 监测 北京地区 

分 类 号：P445.4[天文地球—大气科学及气象学] P412.27