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Since the 1950s, quasi-periodic oscillations have been studied in theterrestrial equatorial stratosphere. Other planets of the solar system present(or are expected to present) such oscillations, like the Jupiter EquatorialOscillation(JEO) and the Saturn Semi-Annual Oscillation (SSAO). In Jupiter'sstratosphere, the equatorial oscillation of its relative temperature structureabout the equator, is characterized by a quasi-period of 4.4 years. Thestratospheric wind field in Jupiter's equatorial zone has never been directlyobserved. In this paper, we aim at mapping the absolute wind speeds inJupiter's equatorial stratosphere to quantify vertical and horizontal wind andtemperature shear. Assuming geostrophic equilibrium, we apply the thermal windbalance using nearly simultaneous stratospheric temperature measurementsbetween 0.1 and 30 mbar performed with Gemini/TEXES and direct zonal windmeasurements derived at 1 mbar from ALMA observations, all carried out betweenMarch 14th and 22nd, 2017. We are thus able to calculate self-consistently thezonal wind field in Jupiter's stratosphere where the JEO occurs. We obtainstratospheric map of the zonal wind speeds as a function of latitude andpressure about Jupiter's equator for the first time. The winds are verticallylayered with successive eastward and westward jets. We find a 200 m/s westwardjet at 4 mbar at the equator, with a typical longitudinal variability on theorder of ~50 m/s. By extending our wind calculations to the upper troposphere,we find a wind structure qualitatively close to the wind observed usingcloud-tracking techniques. Nearly simultaneous temperature and windmeasurements, both in the stratosphere, are a powerful tool for futureinvestigations of the JEO (and other planetary equatorial oscillations) and itstemporal evolution.

Mapping the zonal winds of Jupiter's stratospheric equatorial oscillation