The record is well accounted for, in fact, by (1) a change in the Earth’s attitude in orbit, which brought a gradual cooling to the Northern Hemisphere, and (2) solar variations that superimposed on that trend a succession of warmings and coolings.Yet to offer such natural explanations for past events does not logically falsify Data on climate changes of the past 10,000 years are available from various parts of the world, but to make the test as favourable as possible for the man-made warming hypothesis, let’s go to the Arctic.1940-60, whilst 9720 for example means 7720-7700 BC.) after 8080 years ago, and most recently into the Little Ice Age 300 years ago – the coldest time since the last big ice age.
Anyone who suspects I may misrepresent the results is welcome to compare my graph with Fig. Temperature variations (red) are oxygen-18 data corrected by Vinther et al.And his hand is on the brow of frenzied climatology, as a co-author of The Chilling Stars: A Cosmic View of Climate Change. During the past 10,000 years, since soon after the end of the last ice age, there have been bigger ups and downs in global temperatures than during the 20th Century.Yet according to the IPCC, citing measurements of gas trapped in polar ice, the concentration of CO.C, to help in looking for ways in which the recent warming may have been out of the ordinary. In the overall plot, more than 50 peaks are higher than that of the 20th Century.But still wanting to make the test as favourable as possible for the man-made warming hypothesis I’ve added a trend line.You can leave a response, or trackback from your own site.