Space-Time Correlations Measured by Two Tethered Balloons

Abstract

Vertical wind fluctuations were measured simultaneously by two sondes hanged from two tethered balloons, which were located nearly parallel to the mean wind direction with the separation distance of about 120m at the height of several hundred meters from the surface. From the data space-time correlations and coherences were computed. The observed peak values of space-time correlations are in good agreement with the correlations derived theoretically on the hypothesis of the inertial subrange.