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Uploaded on Tuesday 21 Feb 2012 by GRID-Arendal

Extreme days and nights - daylight variation in the Arctic: Reykjavik, Murmansk and Alert

Year: 2008 Author: Hugo Ahlenius, UNEP/GRID-Arendal
Description:
The Arctic and Antarctic have long nights in the winter and long days in the summer. Above the Arctic Circle (66 °N), there is at least one day with no sun– polar night, and one day with no night— midnight sun. This graph shows the length of day through the year for three places in the Arctic: Reykjavik, Iceland, is the only national capital in the Arctic, Murmansk, Russia, is one of the largest cities in the nort and finally Alert, Canada, the northernmost inhabited place on Earth. Alert experiences 4½ months with the sun below the horizon (polar night) in the winter, and 4½ months of midnight sun.
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Tags:
Climate change - ice and snow and the albedo effect
Temperature increases in the Antarctic due to climate change, 2090 (NCAR-CCM3, SRES A2 experiment)
Major research stations in the Arctic
Protected areas, Arctic and Antarctic
Coldwater coral reefs, distribution
Population and main oil and gas production areas in the Arctic
Cold places on the Southern Continent
The Antarctic hole