The composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years.
Figure 10. Decline of Arctic ice cap from 1980 (left) to 2012 (right). The bright white central mass shows the perennial sea ice while the larger light blue area shows the full extent of the winter sea ice, including the average annual sea ice during the months of November, December and January.[fn][[nid:346]][/fn]
Figure 8: Global temperature anomalies for 2000 to 2009. Temperature anomalies do not depict absolute temperature, but rather how much warmer or colder a region is compared to the norm for that region from 1951 to 1980. Global temperatures from 2000–2009 were on average about 0.6°C higher than they were from 1951– 1980. The Arctic, however, was about 2°C warmer.[fn][[nid:344]][/fn]