Arctic Sea Ice Extent Data

Sea ice volumes in polar regions are a key indicator of global change. In the Arctic, sea ice extent in summer has fallen dramatically in recent years, particularly in 2007 and 2008. The media do…

Black Swan White Mountain

Everyone knows that tree rings mark annual variations in tree growth. Biomass production is influenced by climatic variability¬† (precipitation,temperature, sunlight) or disease, pests, fire etc. Tree rings can be measured very accurately and used to…