Abstract: During the ALPEX field program, pressure was measured along three Alpine cross sections. In order to attain high accuracy, pressure sensors had to be protected against the influence of wind-induced dynamic pressure effects ...

Abstract: As noted elsewhere, in temperature profiles obtained by a tethered balloon, thermal plumes can be distinguished from true stratification by the simultaneous operation of an acoustic echo sounder. Rising thermals observed ...

Abstract: In upper-air observations, height data are normally computed from pressure and virtual temperature by resort of the hydrostatic equation. Errors in the primary variables affect the accuracy of height data depending on how ...

Abstract: The diurnal temperature variation at the 850, 700 and 500 mb levels is evaluated using radiosonde data gathered at short time intervals in the Alpine region and is found to be very close to sinusoidal. The amplitude is of ...

Abstract: The reproducibility of VIZ radiosonde data has been investigated using three ascents with two sondes on the same balloon. Provided the baseline check is carried out carefully and under favorable conditions, the reproducibility ...

Abstract: A boiling-point barometer?commonly called hypsometer?has been developed for use on meteorological radiosondes. In this hypsometer, water is heated electrically, and its boiling temperature is measured with a thermocouple. ...

Abstract: A collection of boundary layer heights has been derived from measurements performed by a ground-based backscatter lidar in Neuchâtel, Switzerland (47.000°N, 6.967°E, 485 m ASL). A dataset of 98 cases have been collected ...