Another proxy study with an 'unprecedented' temperature claim

UPDATE: McIntyre discovers a serious flaw right away, more upside down Mann world – he writes: In keeping with the total and complete stubbornness of the paleoclimate community, they use…

New isotope based temperature reconstruction using McIntyre's 'Starbucks hypothesis' tree core samples

A new paper in GRL published Sep 6th Secular temperature trends for the southern Rocky Mountains over the last five centuries makes use of some tree core sample data gathered…

Alarmist fact checking – street lights don't melt at 115°F

Tom Nelson posts this hilarious rush to connect a hot day to CO2 induced heat. Oops: Before learning the real cause (dumpster fire), lots of alarmists rush to blame carbon…

This is what global cooling really looks like – new tree ring study shows 2000 years of cooling – previous studies underestimated temperatures of Roman and Medieval Warm Periods

Since Princeton’s Dr. Michael Oppenheimer conflated weather with climate last week, proclaiming a short lived heat wave as “This is what global warming really looks like” in a media interview, it…

Proxy Science and Proxy Pseudo-Science

Guest post by Pat Frank It’s become very clear that most published proxy thermometry since 1998 [1] is not at all science, and most thoroughly so because Steve McIntyre and…

Mann: Trees aren't behaving like I want them to – volcanoes to blame

From Penn State Tree rings may underestimate climate response to volcanic eruptions Some climate cooling caused by past volcanic eruptions may not be evident in tree-ring reconstructions of temperature change…

Internal dissent: "Personally, I think that the tree ring records should be able to reproduce the instrumental record"

Severinghaus and “Hide the Decline” By Steve McIntyre One of the very first contributions to realclimate was an FAQ from Jeff Severighaus on Dec 3, 2004. A year earlier, Severinghaus attempted…

Shock news: trees grow better in a warmer climate with more carbon dioxide

The geniuses at Columbia University’s Lamont -Doherty Earth Observatory have discovered Liebigs Law of the Minimum. The tree researcher exclaims: “I was expecting to see trees stressed from the warmer…

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…

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…

Pielke Senior on tree and thermometer divergence

by Dr Roger Pielke, Sr. With the McShane and Wyler paper examining and questioning the method, this look at the proxy data and its problems seems like a relevant issue…

Trees named "Tyranny and Freedom" – which tree in the photo below is the older one?

While researching for one of WUWT’s  previous posts by Caleb Shaw, which is a must read essay on the simple things that can explain tree ring records to scientists that…

A hands on view of tree growth and tree rings – one explanation for Briffa's YAD061 lone tree core

One of the great things about WUWT is that people from all walks of life frequent here. We have PhD’s right down to Average Joe  that read and post comments…

Ross McKitrick sums up the Yamal tree ring affair in the Financial Post

For those who don’t know, Ross McKitrick of the University of Guelph co-authored the first paper with Steve McIntyre debunking Michael Mann’s first Hockey Stick paper, MBH98. Ross wrote this…

Response from Briffa on the Yamal tree ring affair – plus rebuttal

First here is Dr. Keith Briffa’s response in entirety direct from his CRU web page: My attention has been drawn to a comment by Steve McIntyre on the Climate Audit…

MIRROR POSTING: YAD06 – the Most Influential Tree in the World

Climate Audit is getting hit with traffic again, so this is a mirror post for interested parties. – Anthony YAD06 – the Most Influential Tree in the World by Steve…

Woods Hole embraces the Medieval Warm Period – contradict Mann's proxy data

“The more interesting and potentially controversial result is that our data indicate surface water temperatures during a part of the Medieval Warm Period that are similar to today’s…” “Although there…

Making Holocene Spaghetti Sauce by Proxy

Holocene, historic and recent global temperatures from temperature proxies. Guest post by: Frank Lansner, civil engineer, biotechnology NOTE: Link to PDF of this article is HERE In the climate debate,…

River ice in Alaska: "pretty good proxy for climate change in the 20th century"

From Physics Today News Picks: Wall Street Journal: Every winter since 1917, people in Nenana, a village 55 miles southwest of Fairbanks, have wagered on the exact moment that the…

Bristlecone Pines: Treemometers or rain gauges ?

Over on Climate Audit, Steve McIntyre has been making a series of posts that have been putting the final nails in the coffin for Michael Mann’s MBH98 paper. This paper was responsible…

Polar Push and Pull

Guest post by Renee Hannon IntroductionThis post examines regional temperature reconstructions during the past several thousand years relative to different baselines and the responses of end member deviants, the Arctic…

Facebook Censorship due to a Science Feedback “Fact Check”

By Andy May Facebook’s censorship is totally out of hand, and their “independent and nonpartisan fact checks” are anything but. Now they are censoring “Climate: The Movie.” The supposed “fact…

Weekly Climate and Energy News Roundup #593

“Everything is determined, the beginning as well as the end, by forces over which we have no control. It is determined for the insect, as well as for the star.…

Annotated Bibliography for Climate: The Movie

By Andy May Many viewers of Climate: The Movie have asked for more information on the topics discussed. In response, I selected the following 70 key statements from the movie…