Juno Perijove 25 Options

[Brian Swift]

Preliminary PJ25_18. Exaggerated color/contrast.

[Bjorn Jonsson]

The long and narrow haze bands often seen at high northern latitudes are especially conspicuous in the PJ25 images. I recently saw a Landsat 8 image that might be of peripheral interest when looking at JunoCam's images of Jupiter's haze bands. I'm attaching a montage showing JunoCam image PJ25_18 at left and the Landsat image at right.



What the images have in common is that they both show haze that looks slightly bluish and in both cases the haze apparently casts brownish shadows on what's below.

The Landsat image at right in the montage was obtained by Landsat 8 on May 9, 2021. It is processed from bands 4, 3 and 2 (red/green/blue) and includes the site of the ongoing Geldingadalir volcanic eruption in Iceland. The volcanic plume containing sulphur dioxide (SO2) among other things is clearly visible; clouds and hazes associated with it extend to the west (or WSW). The Landsat image is slightly enhanced to better show the plume and the shadows and the color saturation was also increased. The JunoCam image is much more heavily processed.

This comparison between JunoCam and Landsat images was inspired by a Facebook post from the Volcanology and Natural Hazard Group at the University of Iceland which posted a different version of this Landsat image (different bands were used) and mentioned the bluish haze and yellowish/brownish shadows from the plume. This particular Facebook post is here:

https://www.facebook.com/Natturuva/posts/2901017770112311