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R. H. Bushnell

Abstract

In connection with the National Hail Research Experiment vertical winds were measured in a thunderstorm by 10 special dropsondes dropped side-by-side over a distance of 4 km. The measurements, made at the northern edge of a weak-echo region, showed updrafts up to 13 m sec−1 at middle levels with much variability.

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R. H. Bushnell
and
P. O. Huss

Abstract

This paper presents a power spectrum of surface winds, developed as part of a study on flight control design. The spectrum, derived by a simple method of calculation, extends from 10−8 cps to 1 cps. Over much of this band it has the form af −1.4.

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