Atmospheric temperatures and winds between 30 and 80 km

Abstract

The method and analysis of the rocket-grenade experiment are briefly described. The 59 values of temperatures and of wind speeds and directions between 30 and 80 km obtained during 12 Aerobee rocket firings are summarized. The mean temperature distribution has a maximum of about 270°K at 50 km, with a lapse rate of about 2.5°/km above the peak. The winds are strong and from the west during the winter months (October through February); less strong and from the east during the summer months (April through August); and are comparatively weak and predominantly from the north during the fall (September). The maximum wind speed measured was a value of 104 m/sec at 55 km during a winter firing. The average probable error for the temperature data is ±5°C; the average errors in wind speed and direction are ±10 m/sec and ±18°, respectively.