毫米波云雷达与地基微波辐射计联合反演云微物理参数  

Experiment of Retrieving Cloud Micro-physics Parameters by Combining Millimeter-wave Cloud Radar and Ground-based Microwave Radiometer

作　　者：韦凯华[1,2] 黄兴友[1,2] 管理[1,2] 黄佳欢[1,2] 何欢 陈浩君[1,4] 

机构地区：[1]南京信息工程大学中国气象局气溶胶与云降水重点开放实验室,南京210044 [2]南京信息工程大学大气探测系,南京210044 [3]湖北省荆门市气象局,荆门448001 [4]上海市气象信息技术与支持中心,上海200030

出　　处：《科学技术与工程》2015年第24期8-17,共10页Science Technology and Engineering

基　　金：国家自然科学基金项目(41475034) ;国家重点基础研究发展计划项目(2013CB430101) 资助

摘　　要：使用地基微波辐射计与毫米波云雷达进行主被动遥感联合探测,从理论上能够更准确地反演云微物理参数。分别以2010年7月于广东阳江和2015年3月于江苏南京进行的联合观测试验所获取的数据为例,对其中的层状云、层积云个例进行联合反演微物理参数的试验和分析,获取云演变过程中微物理参数和其他环境场物理量的变化特征。结果表明:1云雷达-微波辐射计联合反演法反演的云微物理参数与基于雷达反射率因子的经验法有较好的一致性,与实测经验值相比,结果比较可靠;2在层状云发展初始阶段,凝结增长作用在云体中上部位置起主要作用,碰并作用主要导致云滴粒子的显著增长和云层垂直方向的延展;在垂直上升速度较大的层积云中,云滴粒子通过碰并作用增长;3低层湿区高度与大范围层状云系出现的高度较为一致,抬升作用和水汽通量的辐合为云的产生提供了动力和水汽条件。Cloud micro-physics parameters can be retrieved more accurately in theory with the use of combining millimeter-wave cloud radar （MWCR） and ground-base microwave radiometer （MWR） on cloud sounding. The change of retrieved micro-physics parameters and other physical properties in atmosphere were got by analyzing stratus and stratocumulus cases during the experiment in Yangjiang, Guangdong in July 2010 and in Nanjing, Jiangsu in March 2015. The results show that： ① the micro-physics parameters retrieved by combing MWCR and MWR are fairly reliable compared with the method which only based on MWCR＇ s reflectivity and the experience value from actual measurement;②during the growth of stratus cloud, condensation takes effect on the middle and upper parts of the cloud at beginning, while the significant growth of the cloud drops and vertical expending of cloud mostly relies on collision-coalescence process. In the stratocumulus which has a large vertical uplifting vertical, the cloud drops grows through collision-coalescence process ; ③ the height of wet areas on low level is roughly consistent with that of stratus cloud. Air uplifting and water vapor flux convergence in certain level provide dynamic and vapor con- ditions for growth of cloud.

关 键 词：毫米波云雷达 地基微波辐射计 联合遥感 云微物理参数 

分 类 号：P413.21[天文地球—大气科学及气象学]