Monday, 18 September 2006

Lowitz arcs in Czech




By Marko Riikonen


  1. Marko I got a similar display like that in 2004 and all three arcs were there and circular lowitz was long and the lower lowitz arc was quite bright and so was the upper. There was also parry arc too.

  2. Marko,

    Was the HaloSim simulation made using the classical Lowitz orientation and regular hexagonal plates? As with other Lowitz displays, more restricted orientations and other crystal habits may be necessary.


  3. Two populations. One with classical spinning orientation and regular hexagons made upper and lower components. Other with restricted orientation and non-regular hexagons made the circular component.

    This is tricky case.

  4. Well, why not put the simulation that I made first. It's for 39° sun elevation. There are the same two populations as explained above, but this time the spinning lowitz population has 4 degs rotation, which removes the parts that extend towards parhelion.