Electrical Conditions in Thunderclouds

利用飞机和雷达观测，从当前的野外项目和1984年和1987年，我们建议寻找下降气流携带电荷靠近云边界，这是一个基本的预测假设的电气化。对于另一个涉及冰球和冰晶的假设，我们建议建造所需的设施，以查明冰球是否向负电荷的主要区域携带足够的电流，以解释电荷的增长。根据遥测飞机数据，我们将在飞行期间计算并显示电荷的大致位置以及雷达反射率，以便引导飞机到达假定冰粒向负电荷的主要区域携带电流的区域。我们现有的垂直扫描3厘米雷达将被修改，以便飞机数据可以叠加在雷达的反射率上。我们还建议建造一种电荷传感器，专门设计用于与现有的记录粒子图像的探针兼容

Using aircraft and radar observations from current field programs and those in 1984 and 1987, we propose to look for downdrafts that carry charge near cloud boundaries, which is a basic prediction of one hypothesis of electrification. For another hypothesis, which involves ice pellets and ice crystals, we propose to build the facilities required to find out whether or not ice pellets carry sufficient current toward the main region of negative charge to account for the growth of the charge. From telemetered airplane data we will calculate and display during flights the approximate locations of charge along with radar reflectivity in order to guide the airplane to regions where ice particles are postulated to be carrying current toward the main region of negative charge. Our present vertically- scanning 3-cm radar will be modified so that aircraft data can be superimposed upon the radar reflectivity. We also propose to build a charge sensor that is specifically designed to be compatible with existing probes that record the images of particles.//