A Proposal to install and Operate a Spaced Antenna Radar as Part of a Mesoscale profiler network in Illinois

一个50 mhz间隔天线/成像多普勒干涉仪系统将被转移到伊利诺斯州的Flatland雷达附近，并在那里运行三年。目标是在厄巴纳附近建立一个中尺度网络，由三台雷达组成三角形阵列，平均距离约为20公里。除了在厄巴纳附近运行的两台雷达之外，新设备的增加将允许测量中尺度和微尺度气象系统发展中的一些重要参数，包括水平和垂直速度、涡度、散度、切变、变形和涡度方程倾斜项。间隔天线/IDI系统的特殊能力也将允许研究造成回波的散射机制、等熵面倾斜，以及可能在30-50 m空间尺度上的小尺度涡度、散度和涡度倾斜项，即间隔天线系统中天线分离的尺度特征。在网络中增加第三台雷达，可获得的信息和可进行的研究数量比使用一台或两台雷达所能取得的成果增加十倍以上。

A 50-MHz spaced antenna/imaging Doppler interferometer system will be moved to a location near the Flatland radar in Illinois and to operate it there for a period of three years. The goal is to establish a mesoscale network near Urbana consisting of three radars in a triangular array with an average separation of approximately 20 km. The addition of the new facility to the two radars already operating near Urbana will allow measurements of a number of parameters important in the evolution of mesoscale and microscale meteorological systems, including horizontal and vertical velocities, vorticity, divergence, shears, deformation, and the vorticity equation tilting terms. The special capabilities of the spaced antenna/IDI system will also allow a study of the scattering mechanisms responsible for the echoes, the tilts of isentropic surfaces, and possibly the small-scale vorticity, divergence, and vorticity tilting terms on a spatial scale of 30-50 m, i.e., the scale characteristic of the separation of the antennas in the spaced antenna system. The addition of a third radar to the network increases the information that can be derived and the number of studies that can be carried out by more than a factor of ten over what can be achieved with either one or two radars.