青海省春季一次积层混合云飞机人工增雨作业个例分析
A Case Analysis of an Airplane Artificial Precipitation Enhancement Operation with Spring Cumulus
中文摘要：
利用中国气象局人工影响天气中心下发的CPEFS模式产品，结合雷达、卫星及自动站降水等观测资料，从作业条件分析、作业实施情况以及作业效果等方面，对2021年青海省春季一次积层混合云飞机人工增雨个例进行分析探讨。结果表明：此次降水过程系统水汽充足，有一定的增雨潜力，具备开展人工增雨催化的条件；作业区云体密实，过冷水丰富，催化部位位于云中上层，催化层温度为－16～－12 ℃，催化区域和催化高度合理；实施飞机播云作业后，作业影响区云体雷达和卫星参量上均有较明显的反映，结合人工催化前后作业影响区和对比区地面站点小时降水量的变化特征，在一定程度上说明此次飞机人工增雨作业对目标云体的发展和维持起到了促进作用，催化播云效果较明显。
中文关键词：
增雨潜力，飞机人工增雨，效果分析，青海
KeyWords：
precipitation enhancement potential, aircraft artificial precipitation enhancement, effect analysis, Qinghai
Abstract：
Using the CPEFS model products issued by the Weather Modification Center of China Meteorological Administration, combined with observation data such as radar, satellite and automatic station precipitation, a case analysis of airplane artificial precipitation enhancement operation with spring cumulus embedded stratus in Qinghai Province in 2021 is conducted from the perspectives of operation conditions, operation implementation and operation results. The results show that (1) the precipitation process system had sufficient water vapor, which had a certain potential of precipitation enhancement, and had the conditions to carry out artificial precipitation enhancement operations; (2) The operation area had dense clouds and abundant subcooled water, the catalytic site was located in the upper layer of the cloud, and the temperature of the catalytic layer was about －16～－12 ℃, thus with appropriate catalyst area and height. After the implementation of the aircraft cloud seeding operation, the impacts of the operation were clearly reflected by radar and satellite parameters. The comparison between the variation characteristics of hourly precipitation of ground stations from the operation area and those from the comparison area indicates that the aircraft artificial precipitation enhancement promoted the development and maintenance of the target cloud body to a certain extent, with obvious effect of cloud seeding.