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Monitoring the Distribution Characteristics of Liquid and Vapour Water Content in the Atmosphere Using Ground-based Remote Sensing
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摘要: 文章根据1992～1994年4～6月间利用北京大学研制的新一代双通道共天线地基微波辐射计在河北省石家庄等地的监测资料，分析了晴空、有云无雨两种天气条件下，大气中积分汽态水、液态水含量的分布特征，两种相态大气含水量的相对分布特点。结果表明，在有云无雨的天气条件下，云中液态水积分含量仅占大气中总水量的1%，说明作为人工增雨资源条件的云中液态水含量仅占大气总水量的一小部分。因此，分析认为，以往通常采用大气中水汽含量评估人工增雨资源条件的方法，存在着不确切性。Abstract: Based on the observational data from a newgeneration ground-based microwave radiometer with double channels and coantenna developed by Peking University, the distribution characteristics of integral liquid and vapour water content in the atmosphere are analyzed on the conditions of clear air cloud without rain during April to June from 1992 to 1994 in Shijiazhuang of Hebei Province. The results indicate that the liquid water makes up one percent of the total water content in the atmosphere without rain, the liquid water resources in clouds for artificial precipitation are only little part of the total. Therefore, the analysis shows that the conventional method of using water vapour content in the atmosphere to estimate cloud water resources is very overstatement.
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