Younger Dryas Myth-Busting: Flash-Frozen Mammoths Edition

Guest “Pleistocene elephant hunting” by David Middleton “The body of this mammoth was found perfectly preserved in the Siberian tundra with food still in its mouth and stomach indicating that…

Younger Dryas Impact Hypothesis Takes Another Self-Inflicted Gunshot Wound

Guest “Really?” by David Middleton H/T to my friend Brian Pratt…Introduction For starters, the author appears to totally fail to grasp the principle of uniformitarianism… Since its introduction in 2007,…

Younger Dryas Impact Hypothesis Takes Another Hit

Guest “whatever” by David Middleton Texas cave sediment upends meteorite explanation for global cooling7 hours agoBaylor University Texas researchers from the University of Houston, Baylor University and Texas A&M University…

New evidence that an extraterrestrial collision 12,800 years ago triggered an abrupt climate change for Earth

What kicked off the Earth’s rapid cooling 12,800 years ago?

Poking a Hole in the Latest Younger Dryas Impact Paper (Uniformitarian Impact Craters, Part Trois)

Guest shoot-down by David Middleton Preface In my previous two posts on uniformitarian impact craters, we examined the pitfalls of drawing cartoons on Google Earth images without ever looking at…

Who knew? Plants are 'heavy water' rain gauges

From the GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre  and the Varved D2O department: The water cycle amplifies abrupt climate change The role of the hydrological cycle during abrupt temperature changes is…

Rapid climate changes in the younger Dryas, but with a 120 year time lag

From GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre Regional climate changes can be very rapid. A German-British team of geoscientists now reports that such a rapid climate change occurred in different regions…

Multiple, Intense, Abrupt Late Pleistocene Warming And Cooling: Implications For Understanding The Cause Of Global Climate Change

Guest essay by Dr. Don J. Easterbrook Dept. of Geology, Western Washington University, Bellingham, WA The results of oxygen isotope measurements from ice cores in the Greenland and Antarctic ice…

Where Lies the Younger Dryas Smoking Gun?

Guest Post by Dan Johnston I have been following the proposed collision theory for the onset of the Younger Dryas for a number of years with considerable interest as it…

Widespread evidence of cosmic impact documented – likely cause of the Younger Dryas cool climate episode

From the University of California – Santa Barbara some paleoclimatology without the need to see hockey sticks. Comprehensive analysis of impact spherules supports theory of cosmic impact 12,800 years ago…

Claim: Trigger for Earth's last big freeze identified

From the University of Massachusetts at Amherst AMHERST, Mass. – For more than 30 years, climate scientists have debated whether flood waters from melting of the enormous Laurentide Ice Sheet,…

'Counterintuitive finding suggests that unexpected factors may govern a glacier's response to climate change'

From the University at Buffalo, new evidence that large ice sheets can grow/disappear quickly on decadal scales in response to regional temperature changes. A descriptive video follows. How fast can…

'We don’t believe the ice cores can be interpreted purely as a signal of temperature'

From the University of Wisconsin: Greenland ice may exaggerate magnitude of 13,000-year-old deep freeze by Chris Barncard Ice samples pulled from nearly a mile below the surface of Greenland glaciers…

The Intriguing Problem Of The Younger Dryas—What Does It Mean And What Caused It?

This is a follow up posting to Younger Dryas -The Rest of the Story! Guest post by Don J. Easterbrook Dept. of Geology, Western Washington University. The Younger Dryas was…

Younger Dryas -The Rest of the Story!

WUWT readers may recall this recent story: New evidence of Younger Dryas extraterrestrial impact The story below provides much more detail about the Younger Dryas event and the split that has…

New evidence of Younger Dryas extraterrestrial impact

From the University of California – Santa Barbara Study finds new evidence supporting theory of extraterrestrial impact (Santa Barbara, Calif.) –– An 18-member international team of researchers that includes James…

New evidence supporting extraterrestrial impact at the start of the Younger Dryas

There’s a new paper in PNAS worth having a look at. It seems the authors found some very strong evidence for a comet or asteroid impact during the period known…

Evaporation, not outflow, drained ancient Lake Agassiz during the Younger Dryas

From the University of Cincinnati: Long-Lost Lake Offers Clues to Climate Change What caused water levels to drop in an immense yet long-vanished lake? Research by a University of Cincinnati geologist…

Easterbrook on the magnitude of Greenland GISP2 ice core data

MAGNITUDE AND RATE OF CLIMATE CHANGES Guest post by Dr. Don J. Easterbrook, Dept. of Geology, Western Washington University The GISP2 Greenland ice core has proven to be a great…

On “Trap-Speed", ACC and the SNR

Guest post by William McClenney “Trap-Speed”: We will initiate this discussion by looking at some of the early, and then later, recognitions of some of climate change’s “best lap times”…