Open access notables Despite the potential for positive methane–climate feedbacks from global wetlands, most Earth System Models (ESMs) and Integrated Assessment Models (IAMs) that informed the last Assessment Report of the IPCC do not directly incorporate this process. Publishing in Nature Climate Change, Zheng et al. unpack the implications of this oversight in Recent intensification of wetland methane feedback. The authors find that compared to climate models CH4 emissions are rising notably faster than projected, on the order of perhaps 25%. This of course is not good news. The article is consistent with a steady drumbeat of large and small ugly surprises appearing in the GHG sources & sinks, flux.. section here each week.
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IMAGE: During austral spring, rapid fluctuations of total ozone columns are apparent over the Great Wall Station, Fildes Peninsula (62.22S, 58.96W) in the western Antarctic. view more
Credit: LUO Yuhan
The polar vortex is a large area of upper-atmosphere cyclonic air circulation surrounding both poles. It is bounded by the polar jet stream and its associated cold air is usually confined to the polar regions. Within the Antarctic circle, and southern polar vortex, ozone quantities are the lowest, globally. A research published in
Advances in Atmospheric Sciences, led by Dr. LUO Yuhan, corresponding author and Associate Professor at the Hefei Institutes of Physical Science (HFIPS), suggests that the polar vortex plays a key role in Antarctic stratospheric ozone depletion.
Chile earthquake: Authorities trigger national panic by mistakenly sending tsunami warning after Antarctica quake CNN 1/25/2021 Story by Reuters © JUAN MABROMATA/AFP/Getty Images A warning sign painted on the street reading Tsunami Evacuation in La Serena, Coquimbo, Chile, taken on June 11, 2015.
Authorities in Chile have expressed regret for spreading panic with a mistaken tsunami warning calling for people to get out of coastal areas following an earthquake in Antarctica.
On Saturday evening at 8:36 p.m., the country s interior ministry tweeted a warning that a magnitude 7.1 earthquake had struck, 216 kilometers (about 134 miles) northeast of the O Higgins Chilean scientific base at the tip of the Antarctic Peninsula. In its tweet, the ministry called for coastal regions of Antarctica to be evacuated due to a tsunami risk.