PJ29, #93, Lightning Candidate

2020-10-28 14:29 UT
Credit : NASA / JPL / SwRI / MSSS / Gerald Eichstädt © cc by
Submitted By : Maquet-80
Mission Phase : PERIJOVE 29

PJ29 green lightning search image, #93, shows a small patch that is a little brighter than the surrounding noise. Approximate cylindrical projection returned an approximate location of

60.4 +/- 2.0 E, 42.5 +/- 2.0 S (plantetocentric, System III, errors only roughly estimated).

The image shows an enhanced version of this patch placed on a cylindrical map derived from PJ29 image #72.

Within the position uncertainty, the lightning candidate may be located at or near a locally moderately brighter cloud-top feature in visible light. A stack of 8 methane band images (between #68 to #83) hints only at a slightly higher (methane-bright) local cloud-top close to noise level. A preliminary interpretation would be a higher albedo of the cloud top in visible light rather than significantly less extinction by overlying hazes.

This interpretation could be considered a statistical data point used to constrain chemical composition of aerosol grain surfaces, especially locally lower abundance of pigments.