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The study is the first to calculate sea ice in the period prior to the 1930s, and suggests the levels in the early 1900s were between 3.3 and 4.3 million square miles (5.3 and 7.4 million square kilometres) Estimates suggest Antarctic sea ice extent was significantly higher during the 1950s, before a steep decline returned it to around 3.7 million miles (6 million square kilometres) in recent decades which is just 14 per cent smaller than at the highest point of the 1900s and 12 per cent bigger than than the lowest point.
The findings demonstrate that the climate of Antarctica fluctuated significantly throughout the 20th century and indicates that sea ice in the Antarctic is much less sensitive to the effects of climate change than that of the Arctic, which has experienced a dramatic decline during the 20th century.
‘We see NASA in an exploration role, in deep space research,’ Walker told the publication.
‘Earth-centric science is better placed at other agencies where it is their prime mission.’ –Francesca Chambers, Daily Mail, 23 November 2016 The international news media is reporting that Donald Trump has changed his mind on climate change and the Paris climate agreement.
This may not be enough to establish what is normal – or abnormal – for the region.
Until the noise of a century of media hype and unscientific speculation about the Arctic has been removed from the public debate, science will be unable to explain what, if anything, the signal from the Arctic is telling us.
Pine Island Glacier, which drains into the Amundsen Sea in West Antarctica, is retreating and thinning rapidly, but the initial triggering mechanism was unclear.
—GWPF, 23 November 2016 The election of Donald Trump and Republican majorities in both houses of Congress have terrified environmentalists and climate campaigners, who have declared that the next four years will be a “disaster.” Fear is understandable.
Trump’s promise to dump Paris will matter very little to temperature rises, and it will stop the pursuit of an expensive dead end.
–Bjorn Lomborg, The Washington Post, 21 November 2016 1) Antarctic Sea Ice Has Not Shrunk In 100 Years, Scott And Shackleton Logbooks Prove The Daily Telegraph, 24 November 2016 Sarah Knapton Antarctic sea ice had barely changed from where it was 100 years ago, scientists have discovered, after pouring over the logbooks of great polar explorers such as Robert Falcon Scott and Ernest Shackleton.
Experts were concerned that ice at the South Pole had declined significantly since the 1950s, which they feared was driven by man-made climate change.
But new analysis suggests that conditions are now virtually identical to when the Terra Nova and Endurance sailed to the continent in the early 1900s, indicating that declines are part of a natural cycle and not the result of global warming.