Tag Archives: Holocene

On certainty: Truth is the Daughter of Time

This comment from Dr. Robert Brown at Duke University is elevated from a comment to a full post for further discussion. Since we have a new paper (Shepherd et al) that is being touted in the media as “certain” using … Continue reading

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Posted in Climate data, Uncertainty | Tagged , , , , , , , | 191 Comments

Claim: Five climate-forcing mechanisms govern 20,000 years of climate change

FOREWORD: I don’t agree with many of the claims made in this paper, particularly the retrograde tri-synodic Jupiter/Saturn cycle claims. This is not a peer reviewed paper. That said, I’m willing to allow discussion of it, so be skeptical of these … Continue reading

Posted in Cosmic rays, Modeling, Paleoclimatology, Solar | Tagged , , , , | 347 Comments

Can we predict the duration of an interglacial?

Perspective by William McClenney on the paper of the same title by: P. C. Tzedakis, E.W. Wolff, L. C. Skinner, V. Brovkin, D. A. Hodell, J. F. McManus, and D. Raynaud http://www.clim-past.net/8/1473/2012/cp-8-1473-2012.pdf I can often be heard, when assailed by … Continue reading

Posted in Glaciers | Tagged , , , , | 74 Comments

Onset of the Next Glaciation

Guest post by David Archibald Baby boomers like me have enjoyed the most benign period in human history. The superpower nuclear standoff gave us fifty years of relative peace, we had cheap energy from inherent over-supply of oil, grain supply … Continue reading

Posted in Glaciers, Global cooling | Tagged , , , | 335 Comments

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 as an instruction manual and have attempted to create confusion … Continue reading

Posted in Sea level, Solar | Tagged , , | 163 Comments

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 the blog The Hockey Schtick and I thought it worth … Continue reading

Posted in Solar | Tagged , , , , , | 99 Comments

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 National Academy of Sciences and it has gained the unfortunate … Continue reading

Posted in Ridiculae | Tagged , , , , , , , , | 104 Comments

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 one of the leading climatologists of his time, indeed described … Continue reading

Posted in Book Review | Tagged , , , , , , , , | 66 Comments

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 the scientific literature. followed by  Dr. Paul Bain Responds to … Continue reading

Posted in Climate ugliness | Tagged , , , , , , , | 747 Comments

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 a model for contemporary climate change. In the international journal … Continue reading

Posted in Arctic, Paleoclimatology | Tagged , , , , , , , | 46 Comments

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. You want the Medieval Warm Period to disappear, and you … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , , | 158 Comments

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 holdback, gatekeeping, obfuscation, and cherry picking by The Team. One … Continue reading

Posted in Michael E. Mann, Paleoclimatology | Tagged , , , , , , , | 52 Comments

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 years ago during something called the “Homeric minimum”. The paper … Continue reading

Posted in Paleoclimatology, Solar | Tagged , , , , , , , , | 118 Comments

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 helpful, examining timescales ranging from the past century to the … Continue reading

Posted in Carbon dioxide, Paleoclimatology | Tagged , , , , , , , | 144 Comments

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 δ13C depletion have often been cited as anthropogenic “fingerprints,” proving … Continue reading

Posted in Alarmism, Carbon dioxide, Paleoclimatology | Tagged , , , , , , , | 247 Comments

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 hear (he offered certainty when all else saw uncertainty) 2. … Continue reading

Posted in Michael E. Mann | Tagged , , , , , , , | 63 Comments

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 effects has always struck me “as two fleas arguing over … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 130 Comments

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 CO2 Warmists – New Study Shows A Clear Millennial Solar … Continue reading

Posted in Solar | Tagged , , , , , , , | 68 Comments