F10.7 Flux, Sea Level and the Holocene

Guest post by David Archibald George Orwell said,” He who controls the present, controls the past. He who controls the past, controls the future.” Some amongst us have used that…

Paper demonstrates solar activity was at a grand maximum in the late 20th century

Solar activity measured by isotope proxies revealed the end of 20th century was the highest activity in 1200 years A 2010 paper (that I somehow missed) was recently highlighted by…

Wild Speculation on Climate and Polar Bears

By Dr. Pat Michaels at World Climate Report, reposted with permission. Here is another big one from PNAS. For those who don’t know, PNAS stands for the Proceedings of the…

HH Lamb–“Climate: Present, Past & Future–Vol 2”–In Review–Part I

Guest post by Paul Homewood (reposted from his blog Not a lot of people know that please visit and  bookmark) Part 1 of a three part series. Hubert Lamb was…

A response to Dr. Paul Bain's use of 'denier' in the scientific literature

Note: This will be the top post for a day or two, new posts will appear below this one. Readers may recall my original post, Nature’s ugly decision: ‘Deniers’ enters…

Study shows the Arctic was much colder while Earth was warmer during Eemian warm period

Warm Climate – Cold Arctic? The Eemian is a poor analogue for current climate change 12.06.2012/Kiel. The Eemian interglacial period that began some 125,000 years ago is often used as…

The longest, most high resolution, most inconvenient paleoclimate data that hasn't been published

Read on for a new Josh cartoon. What’s wrong with this image? Well if you are part of The Team (RealClimate and friends), it goes against everything you’ve been publishing.…

Mann's secret hot sauce

Steve McIntyre finds yet another instance where Mann applies his special “secret hot sauce” to data, selling the sizzle, rather than the steak. It is another familiar tale of data…

Solar grand minima linked to cooling period in Europe

This is interesting. A quick cooling in Europe together with an increase in humidity and particularly in windiness was found to coincide with a long-term reduction in solar activity 2800…

Does CO2 correlate with temperature history? – A look at multiple timescales in the context of the Shakun et al. paper

Guest post by Michael Pacnik Especially in the context of recent discussion of the Shakun et al. paper, a look at other sources for temperature history versus CO2 can be…

Dusting for Fingerprints in the Holocene

Guest Post by David Middleton Fingerprints are admissible evidence in criminal trials because of their uniqueness. The probability of two human beings having identical fingerprints is very low. Measurements of…

Ambler's rebuttal to Mann in the Wall Street Journal

Guest post by Harold Ambler The reasons that climatologist Michael Mann is as successful as he is are multiple: 1. He told the United Nations something that it was dying to…

The End Holocene, or How to Make Out Like a 'Madoff' Climate Change Insurer

Guest post by William F. McClenney This post is essentially an update to The Antithesis and On “Trap Speed”, the ACC and the SNR. The entire non-debate on anthropogenic climate…

New Study Shows A Clear Millennial Solar Impact Throughout Holocene

Key Points High resolution SST and SSS reconstruction off Cape Hatteras Low salinity anomaly (3.5-5.2 ka): absence of Labrador current influence Millenial NAO pattern and solar variability Emphatic Blow To…

Told ya so: Al Gore + Kilimanjaro = alarmist hype

I’ve said many times that the claims of receding glaciers on Mt. Kilimanjaro by Al Gore in his movie “An Inconvenient Truth, and by extension, the claims of Dr. Lonnie…

The behind the scenes bumbling of the hockey stick

Mann oh Mann. Tom Nelson continues to wade through the 5000+ Climategate 2 emails. I’ve selected a few he’s highlighted in the vein of behind the scenes discussion of Dr.…

On The IPCC’s Undue Confidence In Coupled Ocean-Atmosphere Climate Models – A Summary Of Recent Posts

I’ve placed Bob’s Figure 21 at the top of this post, because it shows something quite interesting, note to caption in red, upper left. – Anthony Guest post by Bob…

Mann hockey stick co-author Bradley: "it may be that Mann et al simply don't have the long-term trend right"

Tom Nelson spots a gem in the Climategate 2 emails: Hockey stick co-author Ray Bradley: “it may be that Mann et al simply don’t have the long-term trend right”; “I…

Climategate 2.0 email – Mike Mann characterized as "crazy" over MWP and "serious enemy"

Edward Cook tells Phil Jones that Mike Mann is “serious enemy” and “vindictive”. Mike Mann had criticized his work. Apparently Mann went “a little crazy” over a paper showing the…

John L. Daly's message to Mike Mann and The Team

Ric Werme writes in comments: When I realized the Climategate 2009 Emails went back many years, one of the first things that occurred to me was there might be Emails…