2012 Atmospheric Optics Alerts + Reports
Posted 08 January 2012 - 07:50
Posted 08 January 2012 - 08:00
Aureole was observed in three different layers of cloud during the evening of 5 January and varied in shape dramatically due to the fast-moving nature of the clouds. There was a small diameter, less than 1/2 degree in radius, perhaps caused by high cirrus cloud or haze, not sure. There was no coronae observed.
Posted 18 January 2012 - 07:48
Not really atmospheric but I noticed some quite vivid heilgenschein in the light of the moon. Not seen this aspect of the heilgenschein (noticed frequently in sunlight) although it probably isn't all that rare.
Date of all the above 9th January 2012.
Posted 18 January 2012 - 07:55
Cirrus was responsible for a colourful sunset which was commented on by quite a few members.
Images of the event taken by Howard Kirby and "Floss The Dog" can be seen below:
Posted 18 January 2012 - 08:02
A dome-shaped area of purple light was observed after sunset, beginning 1630 UT, peaking at 1645 UT and fading 15 minutes later. It extended to about half-way up the sky from above the horizon with bright yellow underneath that.
Posted 18 January 2012 - 08:13
A much weaker purple light was observed after sunset but there were cloud streaks, wisps, undulations within this.
It seems that this spectacular dawn was likely caused by polar stratospheric clouds (of the 1st type). Nacreous clouds were widely observed in Sweden on 12-13 January.
The green flash was observed at sunrise.
Posted 18 January 2012 - 08:18
Iridescence was observed and photographed by Dave Hancox (Ayrshire). See below:
Posted 18 January 2012 - 08:23
Posted 09 May 2012 - 13:36
Posted 19 June 2012 - 11:52
This post has been edited by Peter H: 19 June 2012 - 12:04
Posted 09 October 2012 - 14:14
Contrails filled the whole sky by late morning with some optical phenomena observed, parhelia, 22 degree halo (incompleted), circumzenithal arc, upper tangent arc (brightest of all), and a parry arc. If skies are similar it might be an opportunity to see this quite rare halo (October 9 is the 3rd day for me) as it has been seen here for fairly long periods so far today. There are hints of a supralateral arc attached to the CZA. There are presently visible here atm.
A clue to what to look for:
Posted 27 October 2012 - 19:22
Posted 01 November 2012 - 07:35
Posted 03 November 2012 - 07:17
Only a couple of sightings of a left parhelion were recorded on the morning of 2 November.
A complete lunar halo was seen during the pre-dawn hours on 3 November.
Posted 05 November 2012 - 07:50