80,000 Yrs of Arctic Ice Melted in Single Weekend

News Brief by Kip Hansen   No, really…no kidding here…this is a real disaster.   This is not Fake News! Here’s the story, from the NY Times’ Tatiana Schlossberg (and here): “Ice from the Canadian Arctic has completely melted, leaving puddles of water in its place and scientists devastated. O.K., this is what actually happened: Ice…

Arctic Albedo Variations

Guest Post by Willis Eschenbach Anthony has just posted the results from a “Press Session” at the AGU conference. In it the authors make two claims of interest. The first is that there has been a five percent decrease in the summer Arctic albedo since the year 2000: A decline in the region’s albedo –…

A Retrospective: Fun With Sea-Ice

At right: Portrait of the artist first writing on sea-ice; coastal Maine, January 1977 Guest essay by Caleb Shaw PART ONE Nearly forty years ago, back when nobody talked of Global Warming, I lived up on the coast of Maine during a series of remarkably cold winters in the late 1970’s, residing in a shack…

Climate as a heat engine

Guest essay by Jan Kjetil Andersen As Willis describes in his article on December 21, the atmosphere can be seen as a gigantic heat engine, i.e. a machine which convert thermal energy, namely temperature, into mechanical energy, namely wind. It may seem a bit strange to view the weather system as a kind of machine…