Climate Data Information

Tree Rings: Southern Hemisphere

Figures 1- 3 show the normalised tree ring growth from 2 countries in the southern hemisphere. The countries and the number of sites examined were:

The correlation coefficient between the two countries averaged data was 0.27.

Figures 2 and 3 show the two countries averaged values. Despite the moderate correlation coefficient, there is general agreement between the data from the two countries. As with the Northern hemisphere the increase in temperature in the early years of the 20th century and the decline in mid-century is clear. It also, unlike the Northern hemisphere data , clearly shows the late 20th century warming.