by P. Gosselin, February 10, 2019 in NoTricksZone
Charismatic Swiss meteorologist Jörg Kachelmann posted a comment at Twitterwhere he wondered what flagship German ZDF television was thinking when its evening news announced the polar vortex was some sort of new phenomenon arising from global warming.
Recently in the media we’ve been hearing a lot about the junk science that a warmer Arctic is somehow miraculously producing extreme cold over vast neighboring continents.
NOAA: “Polar vortex nothing new […] term appeared in 1853”
The science behind the polar vortex.(NOAA)Download
by Penn State, February 2, 2019 in ScienceDaily
Paleoclimatic records indicate that most of Greenland was ice-free within the last 1.1 million years even though temperatures then were not much warmer than conditions today. To explain this, the researchers point to there being more heat beneath the ice sheet in the past than today.
Data show that when the Iceland hot spot — the heat source that feeds volcanoes on Iceland — passed under north-central Greenland 80 to 35 million years ago, it left molten rock deep underground but did not break through the upper mantle and crust to form volcanoes as it had in the west and east. The Earth’s climate then was too warm for Greenland to have an ice sheet, but once it cooled the ice sheet formed, growing and shrinking successive with ice ages.