| 液态CO2人工引晶后云微物理和降水变化的观测分析 |
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| 引用本文： | 金德镇,雷恒池,郑娇恒,肖辉,崔莲,吴玉霞,刘健.液态CO2人工引晶后云微物理和降水变化的观测分析[J].大气科学,2007,31(1):99-108. |
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| 作者姓名： | 金德镇 雷恒池 郑娇恒 肖辉 崔莲 吴玉霞 刘健 |
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| 作者单位： | 1.吉林省人工影响天气办公室,长春,130062 |
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| 基金项目： | 中国科学院知识创新工程项目
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国家自然科学基金 |
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| 摘 要： | 根据飞机探测仪器观测到的云中粒子微观结构，结合卫星、雷达和常规天气资料，分析了人工增雨作业前后云的宏、微观物理结构和降水变化。结果表明，作业后影响区云中的冰晶浓度、雨滴直径比对比区有明显增加，云中过冷水减少；对比区降水回波强度和强回波区面积变化不大，而影响区最大回波强度增大,强回波区的面积扩大，降水增加。这与影响区云中降水粒子增多、直径增大是一致的，这些结果说明了液态CO2催化层状云的物理响应。
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| 关 键 词： | 综合观测 液态CO2(LC) 人工引晶 云微物理特征 |
| 文章编号： | 1006-9895（2007）01-0099-10 |
| 修稿时间： | 2005-11-172006-06-07 |
Observation Research on Cloud Microphysics and Precipitation Affection of Stratiform Cloud Seeding by Liquid Carbon Dioxide |
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| JIN De-Zhen,LEI Heng-Chi,ZHENG Jiao-Heng,XIAO Hui,CUI Lian,WU Yu-Xia,LIU Jian.Observation Research on Cloud Microphysics and Precipitation Affection of Stratiform Cloud Seeding by Liquid Carbon Dioxide[J].Chinese Journal of Atmospheric Sciences,2007,31(1):99-108. |
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| Authors: | JIN De-Zhen LEI Heng-Chi ZHENG Jiao-Heng XIAO Hui CUI Lian WU Yu-Xia LIU Jian |
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| Institution: | 1 Weather Modification Office of Jilin Province, Changchun 130062 2 Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics Sciences, Beijing 100029 |
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| Abstract: | The detail information is deduced on the microphysical affection of stratiform cloud seeding,including in situ aircraft measurements,radiosondes,radar data,and surface observations in the experiment of precipitation enhancement in Jilin Province during 11-12 July 2002.The results indicate that the maximum of cloud super cooled liquid water content reaches 0.1-0.2 g/m~3,but the concentration of ice crystal is very low for nature cloud.It means that the cloud is eligible for precipitation enhancement seeding according to principle of weather modification.The changes of cloud microphysical structure,such as the increasing of ice crystal concentration and diameter of rain droplets,the decreasing of super cooled liquid water content,are caused by seeding liquid CO_2.The increase in radar echo intensity in the incidence area comparing with the target area is also caused by cloud seeding,which is similar to the increase in concentration of rain droplets observed by in situ aircraft.For the precipitation intensity in the incidence area of cloud seeding increases but it only slightly changes in the comparison area.The redistribution of rainfall is caused by cloud seeding in the precipitation area. |
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| Keywords: | in situ aircraft observation liquid carbon dioxide cloud seeding structure of cloud microphysics |
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