Read here. Scientists from Germany and Russia conducted extensive research and reconstructed past temperatures from tree rings. Using tree samples of Scots pine in the Khibiny Low Mountains of the Kola Peninsula in Arctic Russia, they found the following:
"The reconstructed summer temperature on Kola in the months of July and August has varied between 10.4°C (1709) and [peaking at] 14.7°C (1957), with a mean of 12.2°C. Afterwards, after a cooling phase, an ongoing warming can be observed from 1990 onwards.....The temperature fluctuated between 10.4°C and a peak of 14.7°C in 1957 , and then cooled until 1990. The scientists say it correlated very well with solar activity until 1990.....What stands out in the data from the Kola Peninsula is that the highest temperatures were found in the period around 1935 and 1955, and that by 1990 the curve had fallen to the 1870 level, which corresponds to the start of the Industrial Age.....The reconstructed summer temperatures of the last four centuries from Lapland and the Kola and Taimyr Peninsulas are similar in that all three data series display a temperature peak in the middle of the twentieth century, followed by a cooling of one or two degrees......What is conspicuous about the new data is that the reconstructed minimum temperatures coincide exactly with times of low solar activity. The researchers therefore assume that in the past, solar activity was a significant factor contributing to summer temperature fluctuations in the Arctic."
The above scientific evidence reveals little, if any, correlation between growth of human CO2 emissions and Arctic temperatures. The scientists conclude that there was a past relationship between solar activity and temperatures.
During the 1990's, the scientists find that warming resumes in the Arctic. And what was solar activity like during the 90's and later? Well solar activity increased, as documented in this Watts Up With That article. (click on image to enlarge)