Fourth Thing To Know About Climate Change–Nat Geographic
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By Paul Homewood
Even their graph of Arctic sea ice extent shows that the ice has stabilised since 2007. They are, of course, hoping that readers will not notice this.
They start their graph in 1979, at the end of a period when the Arctic had been getting colder for three decades.
In Climate, History and the Modern World, HH Lamb wrote (in 1982):
The cooling of the Arctic since 1950-60 has been most marked in the very same regions which experienced the strongest warming in the earlier decades of the 20thC, namely the central Arctic and northernmost parts of the two great continents remote from the world’s oceans, but also in the Norwegian-East Greenland Sea….
A greatly increased flow of the cold East Greenland Current has in several years (especially 1968 and 1969, but also 1965, 1975 and 1979) brought more Arctic sea ice to the coasts of Iceland than for fifty years. In April-May 1968 and 1969, the island was half surrounded by ice, as had not occurred since 1888.
Such sea ice years have always been dreaded in Iceland’s history because of the depression of summer temperatures and the effects on farm production….. The 1960’s also saw the abandonment of attempts at grain growing in Iceland, which had been resumed in the warmer decades of this century after a lapse of some hundreds of years…
And during the earlier decades of warming, which he mentions, we know that temperatures around the Arctic were at similar levels to today.
For instance, Nuuk in Greenland:
The warming and cooling cycles in the Arctic have nothing at all to do with global warming, but follow the Atlantic Multidecadal Oscillation, a perfectly natural event, which NOAA says has been occurring for at least the last 1000 years.
As for the Antarctic, the land ice mass there is actually growing, according to satellite altimeters.
They also mention glaciers, but do not tell their readers that glaciers worldwide grew massively between the Middle Ages and the mid 19thC, in other words during the Little Ice Age. (See here.)
They began retreating around the mid 19thC, and observations show that the rate of recession was greater then and in the early 20thC than it is now.
As glaciers melt, we are finding the remains of forests, carbon dated to the Middle Ages, as far apart as Alaska and Patagonia. Clearly glaciers are simply returning to their natural state prior to the Little Ice Age.
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April 13, 2017 at 06:30AM
Iowa Climate Science Education 