I’m back home for a day or two from the north. Lots of interesting things but as I’m catching up on sleep before returning for another stint, I’ll just post one note. I was surveying all the riparian zones on our project (I get most of the work on foot as I’m the only one who enjoys it) when I traversed along this unnamed frozen lake. I did a bit of a double take when I realized there was a gorgeous rainbow halo on the ground in the snow!
It then occurred to me I have never seen a halo on the ground before. I took this picture with my iphone but of course the halo merely looks like a lens effect. It’s only an interesting picture if you understand that the halo exists in the world and not just the camera. Upon getting home yesterday, I looked up the phenomenon to discover it is very uncommon and could only find a handful of pictures of it. This is the more common 22 degree ground halo. There is an even rarer 42 degree halo as well.
Above: 22 degree ground halo taken 11am, Jan 18, 2015 @ lat. 55N
To create this halo, ice crystals need to form and settle in a very precise way. As I’m always saying, there’s always something new and astounding in the bush if you spend enough time out in it.