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A case study of wave motion above a jet stream flow system observed by an instrumented balloon

Abstract : An analysis is presented of the data obtained from an instrumentedballoon rising through a jet stream. Emphasis is placed on the determination of the vertical atmospheric velocity. The analysis of the temperature and velocity perturbations shows evidence of a wave structure propagating upward. An estimation of the vertical flux of horizontal momentum is given. These preliminary results show clearly the ability of our helisonde to measure wave motions with a vertical velocity as low as 0.1 m s-’. The method allows a direct measurement of wave propagationinthe stratosphere.
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Jean Barat, Charles Cot. A case study of wave motion above a jet stream flow system observed by an instrumented balloon. Tellus A, Co-Action Publishing, 1984, 36A, pp.480 - 489. ⟨10.3402/tellusa.v36i5.11648⟩. ⟨insu-03580971⟩

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