We’ve always suspected this for some time, as the MWP ended, they became isolated by the change in weather patterns as the climate turned colder. Nice to see it in…
Category: Paleoclimatology
Mann's new sea level hockey stick paper
WUWT readers may recall yesterday where Dr. Mann was so eager to list this paper on his resume/CV, he broke the embargo set for 15:00 EST June 20th, today, at…
Mike Mann's new sea level hockey stick
Tomorrow at 15:00 EST an embargo will be lifted for a new paper to be published in the Proceedings of the National Academy of Sciences. I have a copy, given…
Trees show no rainfall pattern in last century
I’ve always said that trees are a better proxy for rainfall than temperature. Just looking at how trees cluster around water sources can tell you this. From the Hockeyschtick: New…
Paleopessimism by Proxy
Carbon release and global warming now and in the ancient past From the National Oceanography Centre Our findings suggest that humankind may be causing atmospheric carbon dioxide to increase at…
Evidence that early Antarctic Circumpolar Current development affected global climate
From NSF: Significant Role of Oceans in Onset of Ancient Global Cooling Aerial view of the drillship JOIDES Resolution. Credit and Larger Version May 26, 2011 Thirty-eight million years ago,…
"Snowball Earth" ended by methane – now an impossible theory
From Eurekalert: Caltech-led team debunks theory on end of ‘Snowball Earth’ ice age Finds that rocks used as key geologic evidence were formed deep within Earth millions of years after…
Study on paleo rainfall records clearly shows existence of MWP and LIA in Southern Hemisphere
This study from the University of Pittsburgh and SUNY-Albany set out to illustrate how rainfall patterns changes with global temperature in South America. They found the link they were looking…
New paleo study "leaves" me skeptical of the claim
From Baylor University, a suggestion that leaves are a better paleo-proxy than tree-rings: New Baylor Research Shows Using Leaves’ Characteristics Improves Accuracy Measuring Past Climates NSF-funded study shows high promise…
Icelandic volcano exonerated for harsh winter of 1783–1784
From AGU’s Geophysical Research Letters: In June 1783 the Laki volcano in Iceland began to erupt, and continued erupting for months, causing a major environmental disaster. The eruption spewed…
Steve McIntyre uncovers another hockey stick trick – where are the academic cops?
NOTE: since this is clearly an important finding with far reaching implications, this will be a “top post” at WUWT for the next couple of days. I urge other bloggers…
New paleo paper shows solar impact on past temperatures
From C3 headlines – Scientists Say Norwegian Sea Research Confirms Large, Robust Solar Impact On Temperatures Read here. Map source here. (click on image to enlarge) There are multiple factors…
"You’re Not Allowed to Do This in Science"
Dr. Richard Muller calls out the “hide the decline” aka “Mike’s Nature Trick” on this YouTube video of a presentation he gave.
Ancient "Hyperthermals" aka global warming, more frequent than previously thought
Ancient “Hyperthermals” a Guide to Anticipated Climate Changes Scripps researchers document the history of sudden global warming events, impacts on marine life By Mario Aguilera, Scripps Institute News (h/t to…
Rebuttal to the Skeptical Science "Crux of a Core"
Guest post by Dr. J Storrs Hall A bit over a year ago, in the wake of Climategate, I put up a blog post over at the Foresight Institute which…
Curry's 2000 comment question: Can anyone defend “hide the decline”?
Guest post by Barry Woods (please bookmark his blog RealClimategate -Anthony) Judith Curry has tackled the ‘Hide the Decline’ issue at her blog Climate Etc. The issue is that data…
Climate change in the Pacific Northwest: still happening after all these years
From the University of Pittsburgh, refreshingly, no mention of AGW in this latest paper. Why, it’s almost as if, these extreme climate shifts occurred….naturally. 6,000-year climate record suggests longer droughts,…
Climate Bloodhounds
Steve McIntyre is blogging again. This time it is about a little noticed Climategate email where Dr. Raymond Bradley disses skeptics as being too unsophisticated to be able to figure…
New paper: "unlikely that man-made global warming would cause a permanent El Niño state"
From the UK another paper with some pragmatic analysis, coupled with some rhetoric on sea ice: Arctic climate variation under ancient greenhouse conditions Tiny organisms preserved in marine sediments hold…
New paleoclimatology proxy – old science magazines
Old issues of Science, Nature, might be useful after all. From The Weizmann Institute of Science Some of the history preserved in old tomes and newspapers may be hiding in…
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