Fig. 2.

image

Jupiter’s stratospheric winds. Top: instantaneous LOS wind speed measurements as a function of latitude obtained from ALMA spectral mapping observations of the HCN (5−4) line. The winds are measured at 1 mbar from 60°S to 50°N and at 0.1 mbar at polar latitudes. The western limb data are plotted in blue and the eastern limb data in red (1-σ uncertainty envelopes in light blue and orange, respectively). Bottom: eastward wind speeds averaged from both limbs from 60°S to 50°N. Prograde winds have positive speed values.

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