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November 12 2014
Sun Dogs - Light Pillars
Common form of ice crystal is hexagonal
Primary refractive effect 22 deg
'fall like leaves'
thus, strong refractive points horizontal from light source,
pillars formed by reflection downwards.
One way of classifying climate is by mapping the vegitation found in various
areas around the planet.
"Koppen-Geiger system of climate classification"
Modern climate records typically include 5 (or more) variables.
- Cloud cover
Averages and deviation