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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.
Rogers, J. H.
Greathouse, T. K.
Sato, T. M.
Irwin, P. G. J.
Giles, R. S.
Simon, A. A.
Wong, M. H.
|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.|
|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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|2017fletcher_NEB_arxiv.pdf||Post-review (final submitted author manuscript)||7.05 MB||Adobe PDF||View/Open|
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