Jupiter's North Equatorial Belt expansion and thermal wave activity ahead of Juno's arrival
Jupiter's North Equatorial Belt expansion and thermal wave activity ahead of Juno's arrival
复制标题
朱诺号到来之前木星北赤道带的扩张和热波活动
DOI:
10.1002/2017gl073383
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发表时间:
2017
影响因子:
5.2
通讯作者:
Fletcher L
中科院分区:
文献类型:
--
作者:
Fletcher L
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 (wave number 16–17, amplitude 2.5 K at 170 mbar) in the mid‐NEB that was anticorrelated with haze reflectivity; and (ii) a stratospheric wave (wave number 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.
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DOI:
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