i it i i 1 ——- a ” ~ . *. ru . we Ws2 Se we eT owt aaa eS tyes ~ < 7 tl + . se OO “Tonos ve . “Og . * » 2, - * FIGURE 12.—The Weather Station at the Nevada Test Site sends radar-observer balloons to the upper atmosphere to check on temperatures, dew points, humidity and wind velocities. The radar tracking instrument on top of the station charts wind velocities and directions. essed most northern hemisphere data, much of it electronically, and used the fastest and most modern techniques in producing forecast charts of the large scale features of the atmospheric circulation. The Mercury station, having more local information and the benefit of numerous studies of local meterological conditions, adjusted the NMC information to make forecasts having the highest possible accuracy for NTS. 38