The ten year averages of temperature anomalies within cells of an icosahedral grid covering the earth’s surface are shown below. The images are taken from four different directions. To view each decade yourself using WebGL follow the first set of header links. To enlarge each image just click on it.
|1951-1960 (50s)||1961-1970 (6os)||1971-1980 (70s)|
|1981-1990 (80s)||1991-2000 (9os)||2001-2010 (2000s)|
The climate has clearly warmed over the last 60 years, with the exception of Antarctica. The mean regional warming in 2010 was 0.48C since 1950. The maximum warming was 2.14C and the maximum ‘cooling’ was -1.1C. The distribution of the 2001-2010 anomalies compared to the 1950s across all 2652 cells of the grid is shown below.
High cell numbers are in general at higher latitudes. These figures also agree with a 10 year average calculated from the monthly data triangulated on a sphere ( see figure 2.).
One needs to be a bit cautious of colour coded temperature maps because they can give an illusion of extreme warming simply by a judicial choice of colour boundaries. However there is no doubt that the earth has warmed by ~0.5C since 1950 mainly concentrated at high northern latitudes.