Figure 4 in B.A. Black et al.: This image shows annually averaged temperature anomalies in excess of 3°C for the first year after the Campanian Ignimbrite (CI) eruption compared with spatial distribution of hominin sites with radiocarbon ages close to that of the eruption.
Credit

B.A. Black et al. and the journal Geology

Claim: Did volcanic induced climate change wipe out Neanderthals 40,000 years ago?

From the Geological Society of America: Boulder, Colo., USA – The Campanian Ignimbrite (CI) eruption in Italy 40,000 years ago was one of the largest volcanic cataclysms in Europe and injected a significant amount of sulfur-dioxide (SO2) into the stratosphere. Scientists have long debated whether this eruption contributed to the final extinction of the Neanderthals.…

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New paper from Hong Yan, Willie Soon, & Bob Carter: Fingerprints of the Sun on Asia-Australia Summer Monsoon Rainfalls during the Little Ice Age

Via press release: A new paper has been published in Nature Geoscience entitled ‘Dynamics of the intertropical convergence zone over the western Pacific during the Little Ice Age ’ by Hong Yan of the Institute of Earth Environment, Chinese Academy of Sciences and an international team of co-authors from the Alfred Wegener Institute (Wei Wei),…

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Inconvenient study: La Niña killed coral reefs 4100 years ago and lasted over two millennia

From Georgia Tech and the “it’s your SUV that’s killing the coral reefs today, why can’t you get that through your head” department comes this inconvenient study. La Nina-like conditions associated with 2,500-year-long shutdown of coral reef growth A new study has found that La Niña-like conditions in the Pacific Ocean off the coast of…

Exposed ice wedges at the coast of the Siberian island Muostakh. With this picture in mind, one can understand, why early researchers thought ice wedges could be nothing else than buried glaciers.
Credit Photo: Thomas Opel, Alfred-Wegener-Institut

Study: Siberian permafrost has been warming for 7000 years

Winters in Siberian permafrost regions have warmed since millenia For the first time, researchers have reconstructed the development of winter temperatures in Russia’s Lena River Delta based on old ground ice data From the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research For the first time, researchers at the Alfred Wegener Institute have…

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An Engineer’s Ice-Core Thought Experiment

Guest essay by Ronald D Voisin (For the Ice-Core “Near-Perfect-Recordation” Enthusiasts) Ice-cores analysis has provided many valuable insights into past climate. We can be more confident for some of these insights than others. One troubling insight surrounds the peaks of historic CO2 atmospheric concentration. In this essay, I would like to describe what I believe…

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Study casts doubt on mammoth-killing cosmic impact

From UC-Davis: Rock soil droplets formed by heating most likely came from Stone Age house fires and not from a disastrous cosmic impact 12,900 years ago, according to new research from the University of California, Davis. The study, of soil from Syria, is the latest to discredit the controversial theory that a cosmic impact triggered…