© Claudia Hinz

Neklid, Klinovec, Czech Republic

Latitude: 50° 24' 12'' N

Longitude: 12° 56' 19'' E

30 January 2014 1056 (Local Time)
Camera direction: towards SSE

Image P/S code: P.13.1

Image I.D.: 4204

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  A complex halo display

  This magnificent halo display was formed by the refraction and reflection of sunlight through diamond dust at an altitude of 1 100 m in Neklid, Klinovec, Ore Mountains, Czech Republic.

  Such complex displays are usually observed only in polar regions, although they may occasionally occur in mountains when there are ice crystals in the air, as in this case. The dust-like specks in this photograph are in fact the diamond dust ice crystals sparkling in the sunlight.

  The halos visible in this picture are: a 22° halo; a parhelic circle and parhelia; a lower tangent arc; infralateral arcs; an upper tangent arc with a suncave Parry arc; a heliac arc; a supralateral arc that touches a circumzenithal arc; and four Tape arcs (also known as 46° Parry arcs). 

  Some of these halo types are quite common, such as the 22° halo and the parhelia. Others, however, are less frequently seen, and some, such as the heliac arc and Tape arcs, are rarely witnessed.  

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Claudia Hinz
  Neklid, Klinovec, Czech Republic
  Latitude: 50° 24' 12'' N
  Longitude: 12° 56' 19'' E
  30 January 2014 1056 (Local Time)
  
  
  Camera direction: towards SSE
  Image P/S code: P.13.1
  Image I.D.: 4204
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  Halo phenomena in Cirrostratus nebulosus

  Several halo phenomena have formed here in a featureless veil of Cirrostratus nebulosus. Surrounding the Sun is a 22° halo. Lying horizontally through the Sun is a parhelic circle at 3 and 4. On the parhelic circle (5, 6) and just outside of the 22° halo are two bright parhelia (commonly known as sun dogs or mock suns), seen at 7 and 8. At the top of the 22° halo is an upper tangent arc and a Parry arc.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Usynina Luybov
  g. Uray, Khanty-Mansiyskiy avtonomnyy okrug, Russian Federation
  Latitude: 60° 7' 25'' N
  Longitude: 64° 46' 58'' E
  22 May 2015 0821 (Local Time)
  
  
  Camera direction: towards E
  C_L = 0, C_M = 0, C_H = 7
  Image P/S code: P.3.0
  Image I.D.: 4805
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  Cirrostratus fibratus with impressive halo phenomena

  The slow northward movement of a warm front produced a shield of high cloud over southern England, UK on the morning of 7 October 2010. The first Cirrus appeared before dawn, followed by variable and beautiful Cirrus and Cirrostratus during the morning – at one point a large shield of Cirrostratus with a sharp edge spread in quickly from the south-east. Later in the morning and into the afternoon, with more general Cirrus/ Cirrostratus, there was a fine and prolonged halo display, including two very bright 22° parhelia, segments of the parhelic circle, an upper tangent arc to the 22° halo (suncave with the Sun at 33° elevation at noon) with pronounced Parry arc and, for part of the afternoon, a very bright circumzenithal arc as well (not shown in the picture). Altocumulus spread in very rapidly from the south after 1500 UTC and the rest of the day and evening remained cloudy, with rain commencing at 1730 UTC.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Stephen Burt
  Stratfield Mortimer, near Reading, Berkshire RG7, United Kingdom of Great Britain and Northern Ireland
  Latitude: 51° 22' 12'' N
  Longitude: 1° 2' 24'' W
  07 October 2010 1211 (Local Time)
  
  
  Camera direction: towards S
  C_L = 0, C_M = 0, C_H = 7
  Image P/S code: S.3.2
  Image I.D.: 5684
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  Halo phenomena

  The veil of Cirrostratus nebulosus is almost invisible and probably only a small height above the ice cap. The halo phenomena comprise two portions of a 22° halo at 1 and 2 and left and right parhelia at 3 and 4, presumably with arcs of Lowitz. There is also a vague indication of a cross at 5 - 6, 7 - 8.

  The place of observation was in a flow of maritime polar air from the south.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © P. Stahl
  Greenland; altitude 2995 m
  Latitude: 70° 54' 0'' N
  Longitude: 40° 42' 0'' W
  23 July 1951 0820 (Local Time)
  
  
  Camera direction: towards E
  C_L = /, C_M = /, C_H = /