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

Jean Barat; Charles Cot

doi:10.3402/tellusa.v36i5.11648

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

Tellus

Volume 36 (1984): Issue 5

By: Jean Barat and Charles Cot

Open Access

|Jan 1984

Abstract

An analysis is presented of the data obtained from an instrumented balloon 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^-1. The method allows a direct measurement of wave propagation in the stratosphere.

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