English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Using images at multiple mid-infrared wavelengths, acquired in May 2018 usingthe VISIR instrument on ESO's Very Large Telescope (VLT), we study Jupiter'spole-to-pole thermal, chemical and aerosol structure in the troposphere andstratosphere. We confirm that the pattern of cool and cloudy anticyclonic zonesand warm cloud-free cyclonic belts persists throughout the mid-latitudes, up tothe polar boundaries, and evidence a strong correlation with the verticalmaximum windshear and the locations of Jupiter's zonal jets. At high latitudes,VISIR images reveal a large region of mid-infrared cooling poleward$\sim$64$^{\circ}$N and $\sim$67$^{\circ}$S extending from the uppertroposphere to the stratosphere, co-located with the reflective aerosolsobserved by JunoCam, and suggesting that aerosols play a key role in theradiative cooling at the poles. Comparison of zonal-mean thermal properties andhigh-resolution visible imaging from Juno allows us to study the variability ofatmospheric properties as a function of altitude and jet boundaries,particularly in the cold southern polar vortex. However, the southernstratospheric polar vortex is partly masked by a warm mid-infrared signature ofthe aurora. Co-located with the southern main auroral oval, this warmingresults from the auroral precipitation and/or joule heating which heat theatmosphere and thus cause a significant stratospheric emission. This highemission results from a large enhancement of both ethane and acetylene in thepolar region, reinforcing the evidence of enhanced ion-related chemistry inJupiter's auroral regions.

Investigating Thermal Contrasts Between Jupiter's Belts, Zones, and Polar Vortices with VLT/VISIR