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| This is true for most ices, but when the ice is just fresh, its
| surface may indeed be very smooth. Such an ice - if thick enough -
| is the best ice to go skating on btw. Usually such ices only appear
| on freshly frozen lackes: after only one or two weeks, that smooth
| ice surface may be gone.
Maybe so but that kind of ice surface is very rare here in Finland at
least.
Usually you got at least some snow over it very soon and it ruins your
skating
;)
| In January 1997 there was a splendid halo display over Stockholm,
| caused by ice rystals very low in the air. This is the best halo
| display I've ever seen, and it's the only time I've seen an
| uninterrupted 45-degree halo (or at least the part above the horizon
| as uninterrupted). Many other halo components were visible as well:
| vertical pillar, horizontal arc, circumscribed halo, and even
| anti-helion arcs (near the horizontal arc but opposite the Sun). I
| watched this from a balcony at the 7th floor, and parts of the
| 22-degree halo even appeared IN FRONT OF THE NEXT HOUSE, some 100
| meters away! The entire 22-degree halo could be seen, even though
| the Sun only was some 10 degrees above the horizon!!!
Sounds like you got very good diamond dust display!!! Congratulations! Did
you
got any pictures?
Regards,
Jarmo Moilanen
Finnish Halo Observing Network
FHON homepage: http://www.ursa.fi/ursa/jaostot/halot
|=============================================
| Jarmo Moilanen
| e-mail: jarmom_at_netppl.fi
| homepage: http://www.netppl.fi/~jarmom/index.htm
|=============================================
|