NASA Flights Detect Millions of Arctic Methane Hotspots

From NASA Feature | February 18, 2020 The image shows a thermokarst lake in Alaska. Thermokarst lakes form in the Arctic when permafrost thaws. Credit: NASA/JPL-Caltech By Esprit Smith, NASA’s Earth Science News Team The Arctic is one of the fastest warming places on the planet. As temperatures rise, the perpetually frozen layer of soil,…

The polar regions in a 2°C warmer world

From AAAS Review ENVIRONMENTAL SCIENCES The polar regions in a 2°C warmer world Science Advances  04 Dec 2019: Vol. 5, no. 12, eaaw9883 DOI: 10.1126/sciadv.aaw9883 Abstract Over the past decade, the Arctic has warmed by 0.75°C, far outpacing the global average, while Antarctic temperatures have remained comparatively stable. As Earth approaches 2°C warming, the Arctic…

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…

IPCC's Report on Climate Change: Myths & Realities

A World Meteorological Organization insider’s view of the IPCC report. Guest essay by Dr. S. Jeevananda Reddy Formerly Chief Technical Advisor – WMO/UN [A note to readers: English is not Dr. Reddy’s primary language. I have made some edits to his original manuscript for clarity, but some readers may find the writing style a bit…

Negative feedback? Storing CO2 in the Arctic

From the Massachusetts Institute of Technology: While the Arctic Ocean is largely a carbon sink, researchers find parts are also a source of atmospheric carbon dioxide For the past three decades, as the climate has warmed, the massive plates of sea ice in the Arctic Ocean have shrunk: In 2007, scientists observed nearly 50 percent…