Sinclair, JA;
Orton, GS;
Greathouse, TK;
Fletcher, LN;
Tao, C;
Gladstone, GR;
Adriani, A;
... Giles, RS; + view all
(2017)
Independent evolution of stratospheric temperatures in Jupiter's northern and southern auroral regions from 2014 to 2016.
Geophysical Research Letters
, 44
(11)
pp. 5345-5354.
10.1002/2017GL073529.
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Abstract
We present retrievals of the vertical temperature profile of Jupiter's high latitudes from Infrared Telescope Facility-Texas Echelon Cross Echelle Spectrograph measurements acquired on 10–11 December 2014 and 30 April to 1 May 2016. Over this time range, 1 mbar temperature in Jupiter's northern and southern auroral regions exhibited independent evolution. The northern auroral hot spot exhibited negligible net change in temperature at 1 mbar and its longitudinal position remained fixed at 180°W (System III), whereas the southern auroral hot spot exhibited a net increase in temperature of 11.1 ± 5.2 K at 0.98 mbar and its longitudinal orientation moved west by approximately 30°. This southern auroral stratospheric temperature increase might be related to (1) near-contemporaneous brightening of the southern auroral ultraviolet/near-infrared inline image emission measured by the Juno spacecraft and (2) an increase in the solar dynamical pressure in the preceding 3 days. We therefore suggest that 1 mbar temperature in the southern auroral region might be modified by higher-energy charged particle precipitation.
| Type: | Article |
|---|---|
| Title: | Independent evolution of stratospheric temperatures in Jupiter's northern and southern auroral regions from 2014 to 2016 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/2017GL073529 |
| Publisher version: | https://doi.org/10.1002/2017GL073529 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Geosciences, Multidisciplinary, Geology, aurora, stratosphere, Juno, POLAR ATMOSPHERE, HAZE FORMATION, EMISSION, CHEMISTRY, IRIS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10038855 |
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