Accession Number : AD0703852

Title :   MEASUREMENTS FROM A ZERO-PRESSURE BALLOON IN THE STRATOPAUSE (48 KM),

Corporate Author : ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Beyers,N. J. ; Miers,B. T.

Report Date : DEC 1969

Pagination or Media Count : 31

Abstract : The results of an experiment conducted at WSMR, New Mexico, on September 11, 1968, in which a very large zero-pressure balloon served as a platform for instruments measuring pressure and temperature are discussed. Also, the results of an analysis for diurnal tidal motion of wind as determined from the balloon trajectory are included. The balloon remained in the stratopause region (48.75-47.80 km) for about four hours, during which time its trajectory with respect to altitude exhibited significant wave-like structure. During the four-hour period an average temperature of +2C was computed from the slope of a least-square fit straight line of ln p (measured pressure values) vs. altitude. A corresponding temperature value of -2C was obtained from averaging the adjusted temperatures measured with the balloon-borne instruments. Additionally, a rocketsonde launched during the time the balloon was in the stratopause region recorded a temperature at 48 km of 0C. There was excellent agreement (within 3%) between pressures computed from the rocket sounding and those measured with balloon-borne instruments. A large horizontal change in temperature (23C in 31 km) was measured at the stratopause level. (Author)

Descriptors :   (*ATMOSPHERIC SOUNDING, STABILIZED PLATFORMS), (*ATMOSPHERIC TIDES, MEASUREMENT), BALLOONS, FLIGHT PATHS, ATMOSPHERIC TEMPERATURE, BAROMETRIC PRESSURE, RADIOSONDES, DENSITY, DETECTORS, RADAR EQUIPMENT, GUIDED MISSILE RANGES, NEW MEXICO

Subject Categories : Lighter-than-air Aircraft
      Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE