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A Pot of Ice at the End of the Fogbow?

A "fogbow" is caused by a process similar to that causing rainbows, but because of the very small size of the water droplets, the fogbow has little color - making it appear white.

Very cold air can't hold as much moisture as warmer air, and therefore fogbows often appear in cold areas.

Click for more information. The colors of a rainbow depend on the size of the water droplets. Bright red only appears when there are big raindrops, but when the droplets are small, the rainbow angles of the different spectral colors overlap in a way that they add up to white light.

The radius and thickness of a fogbow also depend on droplet size. As the droplets get smaller, the fogbow gets broader (usually about twice as wide as a normal rainbow) but its radius decreases. Unscientifically put, they're paler, shorter and fatter.

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Library: Environment/Atmosphere, Arctic
Links: Environment, Arctic
Arctic Maps & Weather Reports


Double-click any unlinked word DICTIONARY: Just "double-click" any unlinked word on this page for the definition from Merriam-Webster's Student Electronic Dictionary at Word Central.
Arctic Library ARCTIC LIBRARY & GLOSSARY: Check this section for an index of the rest of the things you really need to know about the Arctic.
All sorts of Arctic Maps ARCTIC MAPS & WEATHER REPORTS: Maps of the Northwest Passage, explorers' routes, iceberg sources, Nunavut, the Arctic by treeline, temperature...
Links to related sites. ARCTIC LINKS: Even more information! Links to sites related to the Arctic and "Iceberg: the Story of the Throps and the Squallhoots".
A Guide to Arctic Sunrise and Sunset GUIDE TO ARCTIC SUNRISE & SUNSET: How much sunlight or darkness is there in the Arctic on each day of the year?

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