用机载多普勒雷达资料进行三维风场解析反演Ⅱ.多重解析多普勒方法应用于在CaPE现场实验中获取的机载雷达实测资料

Three Dimensional Analytical Retrieval from Airborne Doppler Radar Dada Part II. Application of MANDOP Method to Airborne Doppler Radar Data Obtained during CaPE Experiment

模拟结果证明，在机载雷达的技术参数下，多重解析多普勒（ＭＡＮＤＯＰ）方法能够提供误差可以接受的三维风场反演。１９９１年夏在美国的佛罗里达州举行的ＣａＰＥ现场实验中首次应用了机载双束多普勒雷达，并获取了珍贵的雷达实测资料。用ＭＡＮＤＯＰ方法分析１９９１年８月９日观测到的一个飑线，取得类似于以往用地基雷达资料得到飑线内部大气环流结构。另外。

The Convection and Precipitation/Electrification Experiment (CaPE) carried out in summer 1991 in Florida, USA, was the first experiment involving a dual-beam antenna on an airborne radar facility. MANDOP analysis provides the possibility to retrieve the mesoscale three-dimensional air circulation in both the stratiform and convective regions of a squall line. On August 9, 1991, from 20:30 to 21:45 (UTC), a squall line located near (28 o 45′N, 80 o 54′W) was observed by the dual-beam antenna radar installed on a P-3 aircraft. For the first time, the recently developed MANDOP analysis was applied to real airborne radar data during this period of observation. This squall line has some common characteristics as the previous studies: upshear tilt of the updraft at the leading edge, inflow of moist air into the squall line at low levels, inflow of dry air with low potential temperature from behind at middle levels and a downdraft at the rear of the stratiform region. The analysis was also generalized to take into account simultaneously ground-based and airborne radar data. The comparisons between wind fields obtained under various combinations show the reliability of the airborne radar data.