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.
“We know that sea ice in the Antarctic has increased slightly over the past 30 years, since satellite observations began.
Scientists have been grappling to understand this trend in the context of global warming, but these new findings suggest it may not be anything new.
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.In future the team plans to use data from naval and whaling ships as well as the logs from Amundsen’s expeditions to complete the picture.Separate research by the British Antarctic Survey also showed that the present day loss of the Pine Island Glacier on the West Antarctic Ice Sheet has been happening since the mid 20th century and was probably caused by El Nino activity rather than global warming.Pine Island Glacier, which drains into the Amundsen Sea in West Antarctica, is retreating and thinning rapidly, but the initial triggering mechanism was unclear.The team looked a sediment cores in the area which showed that an ocean cavity under the ice shelf began to form around 1945, following a pulse of warmth associated with El Niño events in the tropical Pacific Ocean.