Juno perijove 30, November 8, 2020 Options

[Gerald]

A few days ago, Juno performed her Perijove 30 (PJ 30) Jupiter flyby. A first set of JunoCam images was already downlinked to Earth.

From PJ to PJ, closest approach is gradually moving northward. The northern FFRs (folded filamentary regions) are going to be resoved better and better. At the same time, the northern spring time is going to reveal the north pole in visible light.

Here a glimpse at the northern circumpolar cyclones with the north polar cyclone just illuminated in the twilight:


Here a pair of cyclones of opposite sign presumably propelling each other slowly towards the south:


And here a storm particularly bright in methane band:

[Bjorn Jonsson]

An orthographic mosaic of images PJ30_22 and PJ30_23 in approximately true color/contrast and enhanced versions:



The mosaic shows a pair of vortexes that look remarkably different. The darker one is at planetographic latitude ~44 degrees north.

[Gerald]

...The mosaic shows a pair of vortexes that look remarkably different...

It's a nice flavor of a cyclone-anticyclone pair, which tends to self-propell, like in this simulation run:
 test_cyc_anticyc_3_Random_SmallFaint_01_640k_v03_001x_vorticity1.mp4 ( 753.7K ) Number of downloads: 409