Category Archives: Science

“Yamalia” tree ring temperature trends.

Posted on June 12, 2013 by Clive Best

A new paper from  (Briffa et al., 2013) presents an updated chronology of temperature anomaly series from Siberia (Yamal and Polar Urals) derived from tree ring data. Their results are also discussed on a realclimate post which responds to past criticism … Continue reading →

Posted in AGW, Climate Change, climate science, Paleoclimatology | Tagged , | 10 Comments

Equilibrium Climate Sensitivity

Posted on May 28, 2013 by Clive Best

There has been much media interest  about “climate sensitivity”, following a recent paper (Otto et al.) which showed lower values than previous IPCC estimates. Climate sensitivity essentially measures  how earth’s  climate reacts to a sudden kick (volcano, meteor, CO2). The new … Continue reading →

Posted in AGW, Climate Change, climate science, GCM, Science | Tagged , , , | 2 Comments

Energy balance and the oceans

Posted on May 16, 2013 by Clive Best

Climate forcing relies on  an imbalance between incoming solar energy and outgoing IR energy at the TOA (top of atmosphere). The CERES instruments monitor radiation fluxes at the TOA and has measured this imbalance over the last 11 years [1]. … Continue reading →

Posted in AGW, Climate Change, climate science, Science | Tagged , | 2 Comments

H2O decreasing while CO2 rises !

Posted on April 18, 2013 by Clive Best

Dire predictions of global warming all  rely on positive feedback from  water vapor. The argument goes that as surface temperatures rise so  more water will evaporate from the oceans thereby amplifying temperatures because H2O itself is a strong GHG.  Climate models … Continue reading →

Posted in AGW, Climate Change, climate science, Science | Tagged , , , | 33 Comments

Marcott – Proxy errors and conclusions

Posted on April 13, 2013 by Clive Best

There has been a lot of discussion (see here) about the treatment of errors by  Marcott et al. through  their  Monte Carlo analysis. Since I  avoided any interpolation or Monte Carlo by using only the measured values for each proxy, … Continue reading →

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Detecting peaks in Marcott data

Posted on April 4, 2013 by Clive Best

New: Simulation of a 20% uncertainty in proxy resolution time and peaks practically disappear. Have there been previous warming periods over the last 10,000 years comparable to current warming ?  If so would Marcott proxy data have been able to … Continue reading →

Posted in AGW, Climate Change, climate science, Ice Ages, Science | Tagged , , | 59 Comments

Map of Marcott Proxies

Posted on March 25, 2013 by Clive Best

The map below shows the location of the 73 proxies provided by Marcott el al. “Mouse over” gives the name of the station and a click on the dot shows the graph of the measured temperatures and anomalies (relative to … Continue reading →

Posted in AGW, Climate Change, climate science, Ice Ages, Science | Tagged , | 4 Comments

Evidence that Marcott’s up-tick is an artefact

Posted on March 23, 2013 by Clive Best

I have calculated from scratch the global averaged temperature anomalies for the 73 proxies used by Marcott et al. in their recent Science paper.  The method used is described in the previous post. It avoids any interpolation between measurements and … Continue reading →

Posted in AGW, Climate Change, climate science, Science | Tagged , | 16 Comments

Marcott Study

Posted on March 22, 2013 by Clive Best

There has been much media interest in a recent paper by Marcott et. al “A Reconstruction of Regional and Global Temperature for the Past 11,300 Years” published in Science. It seemingly shows that following a slow cooling over the last … Continue reading →

Posted in AGW, Climate Change, climate science, Ice Ages, Science | Tagged , | 1 Comment

Beware which way the wind blows.

Posted on March 6, 2013 by Clive Best

Total UK electricity power demands are made available by the National Grid. A Live control panel can be seen here. These figures are a real eye opener and should be made compulsory reading by lobbyists and politicians. They highlight how … Continue reading →

Posted in AGW, Climate Change, Energy, Physics, Science, Technology, wind farms | Tagged , | 3 Comments