COMPARISON OF ROCKETSONDE AND RADIOSONDE TEMPERATURES AND A VERIFICATION OF COMPUTED ROCKETSONDE PRESSURE AND DENSITY.
ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX
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Two diurnal series of rocketsonde temperature measurements complemented by hypsometer-type balloon-borne radiosondes are examined in the overlap region extending from approximately 20 to 32 km altitude. Considering time and space variability, the average temperature difference found in a comparative analysis of corresponding radiosonde and rocketsonde measurements of only 1.26 degrees Celsius radiosonde colder through the layer demonstrates exceptionally good agreement particularly since this systematic difference is primarily attributable to excessive infrared cooling of the radiosonde rod thermistor. Since a tie-on pressure from the radiosonde in the overlap region is used to compute pressure and density up to approximately 60 km from the rocketsonde direct temperature measurement, the reliability to be expected from this procedure is also demonstrated. A more recent experiment in which an independent one-point pressure sensor was incorporated with the rocketsonde verified the computed pressure at 55 km. The resultant 1.7 percent pressure difference is within the accuracy limitations of the radiosonde pressure measurement at the tie-on level. Author
- Atmospheric Physics