Atmospheric Dynamics Using the Flatland Radar Observatory

调查人员建议继续运作， 在尚潘附近的平地雷达观测站的发展- 伊利诺伊州，厄巴纳。 平地的主要仪器 天文台是50兆赫ST雷达，目前由 一个地面气象站，一个无线电探空仪，和一个阵列， 八个微气压计 该仪器将被补充 带有一个915兆赫的低对流层雷达和一个随附的无线电 声学探测系统（RASS）测量风和温度 对流层低层的剖面。 科学目标是：（1）研究中尺度 对流层和平流层下部的动力学过程， 它们对大尺度动力学的影响;（2）研究微尺度 过程，包括湍流和分层的不规则性 折射率，并评估其对准确度和 ST雷达测量的精度;（3）评估 ST雷达技术的能力，特别是其 在较长时间内测量垂直速度的潜力。

The investigators propose continued operation and development of the Flatland Radar Observatory, near Champaign- Urbana, Illinois. The principle instrument at the Flatland Observatory is the 50 MHz ST radar; it is presently supported by a surface meteorological station, a radiosonde, and an array of eight microbarographs. This instrumentation will be supplemented with a 915 MHz lower tropospheric radar and an accompanying Radio Acoustic Sounding System (RASS) to measure wind and temperature profiles in the lower troposphere. The scientific objectives are: (1) to investigate mesoscale dynamical processes in the troposphere and lower stratosphere and their effects on larger scale dynamics; (2) to study microscale processes, including turbulence and stratified irregularities of refractive index, and to assess their effects on the accuracy and precision of ST radar measurements; and (3) to assess the capabilities of the ST radar technique, particularly its potential for measuring vertical velocities over extended times.