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Title: Jupiter’s North Equatorial Belt expansion and thermal wave activity ahead of Juno’s arrival
Authors: Fletcher, L. N.
Orton, G. S.
Sinclair, J. A.
Donnelly, P.
Melin, H.
Rogers, J. H.
Greathouse, T. K.
Kasaba, Y.
Fujiyoshi, T.
Sato, T. M.
Fernandes, J.
Irwin, P. G. J.
Giles, R. S.
Simon, A. A.
Wong, M. H.
Vedovato, M.
First Published: 25-May-2017
Publisher: American Geophysical Union, Wiley
Citation: Geophysical Research Letters, 2017, 44
Abstract: The dark colors of Jupiter's North Equatorial Belt (NEB, 7 − 17∘N) appeared to expand northward into the neighboring zone in 2015, consistent with a 3-5 year cycle. Inversions of thermal-IR imaging from the Very Large Telescope revealed a moderate warming and reduction of aerosol opacity at the cloud tops at 17 − 20∘N, suggesting subsidence and drying in the expanded sector. Two new thermal waves were identified during this period: (i) an upper tropospheric thermal wave (wavenumber 16-17, amplitude 2.5 K at 170 mbar) in the mid-NEB that was anti-correlated with haze reflectivity; and (ii) a stratospheric wave (wavenumber 13-14, amplitude 7.3 K at 5 mbar) at 20 − 30∘N. Both were quasi-stationary, confined to regions of eastward zonal flow, and are morphologically similar to waves observed during previous expansion events.
DOI Link: 10.1002/2017GL073383
ISSN: 0094-8276
eISSN: 1944-8007
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2017, American Geophysical Union, Wiley. Deposited with reference to the publisher’s open access archiving policy.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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