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- Author or Editor: N. J. Beyers x
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Abstract
Diurnal temperature variations between 30 and 60 km have been determined in a series of eleven meteorological rocket soundings from 0400 MST 7 February 1964 through 0205 MST 8 February 1964 over White Sands Missile Range, New Mexico. The soundings were spaced at 2-hour intervals and temperatures were measured with thermistor type instrumentation suspended on a parachute. Minimum temperatures were recorded near 0400 to 0600 MST and maximum temperatures occurred about 1400 MST. The temperature range decreased from near 20C at 55 km to 15C at 45 km and to near 5C at 35 km. Significant non-diurnal heating was also present. Additional sets of temperature soundings made at 1400 and 1600 MST on 21 November 1964 and 0400 and 0600 MST on the 22nd over White Sands Missile Range were available for comparison. These soundings indicated a day to night variation of 15C from 63 km down to 55 km with marked dampening of variation thereafter. The November soundings may not represent the entire diurnal range since the soundings might have included large scale non-diurnal heating which was impossible to isolate.
Abstract
Diurnal temperature variations between 30 and 60 km have been determined in a series of eleven meteorological rocket soundings from 0400 MST 7 February 1964 through 0205 MST 8 February 1964 over White Sands Missile Range, New Mexico. The soundings were spaced at 2-hour intervals and temperatures were measured with thermistor type instrumentation suspended on a parachute. Minimum temperatures were recorded near 0400 to 0600 MST and maximum temperatures occurred about 1400 MST. The temperature range decreased from near 20C at 55 km to 15C at 45 km and to near 5C at 35 km. Significant non-diurnal heating was also present. Additional sets of temperature soundings made at 1400 and 1600 MST on 21 November 1964 and 0400 and 0600 MST on the 22nd over White Sands Missile Range were available for comparison. These soundings indicated a day to night variation of 15C from 63 km down to 55 km with marked dampening of variation thereafter. The November soundings may not represent the entire diurnal range since the soundings might have included large scale non-diurnal heating which was impossible to isolate.
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Abstract
Wind and temperature soundings from a series of 16 meteorological rocket firings over a period of 51 hours between 30 June and 2 July 1965 are presented. Harmonic analysis revealed large diurnal oscillations in the zonal and meridional winds. Both components displayed amplitudes of about 12 m sec−1 near the stratopause (52–56 km) with the phase of the meridional (v) component leading the zonal (u) component by about 5–7 hours at that level. The v component was generally more uniform in both phase and amplitude over the two-day period. Harmonic analysis of the temperatures also revealed a diurnal oscillation with an amplitude of 8.2C at 52 km with the maximum occurring near 1330 hours local time. An attempt to arrive at an independent estimate of the temperature cycle, based essentially on a generalized thermal wind equation, yielded inconclusive results. When this series was combined with previous data, it was concluded that an unmistakable, dominant, diurnal tidal oscillation exists in the stratopause region over White Sands Missile Range (32N) during most or all seasons, particularly in the meridional component.
Abstract
Wind and temperature soundings from a series of 16 meteorological rocket firings over a period of 51 hours between 30 June and 2 July 1965 are presented. Harmonic analysis revealed large diurnal oscillations in the zonal and meridional winds. Both components displayed amplitudes of about 12 m sec−1 near the stratopause (52–56 km) with the phase of the meridional (v) component leading the zonal (u) component by about 5–7 hours at that level. The v component was generally more uniform in both phase and amplitude over the two-day period. Harmonic analysis of the temperatures also revealed a diurnal oscillation with an amplitude of 8.2C at 52 km with the maximum occurring near 1330 hours local time. An attempt to arrive at an independent estimate of the temperature cycle, based essentially on a generalized thermal wind equation, yielded inconclusive results. When this series was combined with previous data, it was concluded that an unmistakable, dominant, diurnal tidal oscillation exists in the stratopause region over White Sands Missile Range (32N) during most or all seasons, particularly in the meridional component.
