Cesium 137 from nuclear weapon testing fallout (1995 figures)
Nuclear explosions - especially the atmospheric tests in the Arctic and from US, UK and Chinese tests at other sites in the world - are the primary source of radioactive contamination in the Arctic. With the times needed for decomposition of nuclear fallout, these higher radiation levels subsists for longer times.
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Sea Ice Anomaly in Northern Hemisphere
Arctic sea-ice reductions have significant impacts on climate, wildlife and communities. The opening of open water across the Arctic ocean will have unknown consequences in terms of changes in water circulation and redistribution of species from the Atlantic and Pacific oceans. As sea ice coverage declines, albedo diminishes and more radiation is absorbed by the sea water, in a feed-back process that enhances warming and melting sea ice.
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
UV Index Worldmap
The Global Solar UV Index (UVI) is a simple measurement of the UV radiation level at the Earth's surface. It has been designed to indicate the potential for adverse health effects and to encourage people to protect themselves. The higher the Index value, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur.
In countries close to the equator, the UVI can be as much as 20. Summertime values in nort...
02 Nov 2009 - by Emmanuelle Bournay, UNEP/GRID-Arendal