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 ...

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 ...