THE B.A.A. GUIDE TO JUPITER’S ATMOSPHERIC PHENOMENA SINCE 1990

John Rogers (BAA Jupiter Section Director)

THIS IS A TEST PAGE.  THE FULL GUIDE WILL BE POSTED SOON.

These pages provide a guide to the major features of Jupiter’s atmosphere and the major phenomena that have occurred since 1990, and an index to the studies that we in the BAA Jupiter Section have published or posted about them – including our best and most up-to-date references.  Only a few professional references are included, mainly those in which the Jupiter Section was also involved, and a few landmark papers.  Other professional references are given in some of our major reports.  I have not included our individual JunoCam perijove reports except for a few special instances.

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–In some cases, on the anticyclonic slope, the ZDP is displaced by up to a degree latitude from the ZWP [e.g. STropZ (see refs. on SEBs jet below) and N5 domain (see 2022/23 report no.6 [Ref.R13] & 2024/25 report no.7)].

–Large anticyclonic ovals sometimes follow a ZDP that is displaced from the ZDP for smaller ovals, probably because they distort the adjacent jet(s):
Ref.J4 = Rogers et al.(2011), ‘A Little Red Spot tracked through a jovian year’   [inc. Supplemental tables.] for N2 & other domains;
Ref.R9 = Jupiter’s long-lived N5 oval, 2015-2023, for N5-AWO;
Ref.R15 = ‘Jupiter’s S. Temperate domain…. 2001-2012’ for S.Temp.AWOs.

Zonal wind profiles from amateur work:
‘Longitudinal drift determination from image pairs with WinJUPOS’& follow: WinJUPOS/Tutorials/. [includes ZWP from amateur images in 2010 Sep] (Grischa Hahn).

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Dates of onset of broadenings [from Ref.J17]:

1987/88 (began 1987 Dec)

1993 (began 1993 March) [Ref.R43 = Interim report for 1993.]

1996 (began 1996 April) [Ref.J29 =  ‘Jupiter in 1996’ in JBAA]

1999-2000 (slow & irregular, from 3rdQ 1999 to late 2000) [Ref.J8 = final report for 1999/2000, and Ref.J10 = final report for 2000/2001]

2004 (began 2004 Feb-April) [see Report 2003/04 no.5, inc. a ZDP, and notable colours including a greenish dark spot]