Sea-ice-free Arctic makes permafrost vulnerable to thawing

  New research, published in Nature, led by scientists at the University of Oxford’s Department of Earth Sciences, and at the Geological Survey of Israel, provides evidence from Siberian caves suggesting that summer sea ice in the Arctic Ocean plays an essential role in stabilising permafrost and its large store of carbon. More info on …

New study changing our understanding of deep-ocean process key to regulating Earth’s climate

Dr Helen Johnson, Associate Professor of Physical Oceanography at the Dept. of Earth Sciences, Oxford, has co-authored a new international study that has found that the Atlantic meridional overturning circulation, a deep-ocean process that plays a key role in regulating Earth’s climate, is primarily driven by cooling waters west of Europe. Contrary to the prevailing …

Arctic Ocean Freshwater Content and Its Decadal Memory of Sea‐Level Pressure

Arctic freshwater content (FWC) has increased significantly over the last two decades, with potential future implications for the Atlantic meridional overturning circulation down stream. We investigate the relationship between Arctic FWC and atmospheric circulation in the control run of a coupled climate model. Multiple linear lagged regression is used to extract the response of total …