Climate science from climate scientists...
The current contributors to content on this site are:
William Connolley was a contributor, but has now left academia; Ray Bradley, David Archer, and Ray Pierrehumbert are no longer active; Jim Bouldin was a contributor from 2009 and Caspar Ammann and Thibault de Garidel were early supporters of the site. Group posts can be assumed to be the from the whole set of current contributers, or will be individually signed.
Caspar Ammann is a climate scientist working at the National Center for Atmospheric Research (NCAR). Dr. Ammann is interested in the reconstruction of natural climate forcings, natural climate variability, coupled modeling of natural and anthropogenic climate change, and data/model intercomparison. Dr. Ammann got his B.S. from Gymnasium Koeniz (Switzerland), his M.S. from the University of Bern (Switzerland), and a Ph.D. from the Department of Geosciences at the University of Massachusetts.
When I joined RC, I was a climate modeller with the British Antarctic Survey. Now I’m a software engineer for CSR. I’m still interested in communicating the science of climate change, but can no longer do so at a professional level.
I’m also elsewhere: the wikipedia project is developing into a useful resource, and my profile is User:William_M._Connolley. My personal vanity site is at www.wmconnolley.org.uk.
One of the people in the picture is me. Guess which.
ps: all my contributions online are released under the GFDL, unless I explicitly note otherwise.
Dr. de Garidel received his Bachelor’s degree in Earth Sciences from the Université Lyon I, France, completed a Master in the Université Bordeaux I, France and a Ph.D. in Geosciences at CEREGE, Université Paul Cézanne (a.k.a. Aix-Marseille III).
More information about his research and publication record can be found here.
This is an issue that is often misunderstood in the public sphere and media, so it is worth spending some time to explain it and clarify it. At least three careful ice core studies have shown that CO2 starts to rise about 800 years (600-1000 years) after Antarctic temperature during glacial terminations. These terminations are pronounced warming periods that mark the ends of the ice ages that happen every 100,000 years or so.
Does this prove that CO2 doesn’t cause global warming? The answer is no.
Les résultats de ces études ne sont pas toujours bien compris par le public, souvent mal restitués par les médias, et méritent donc davantage d’explications. Au moins 3 études détaillées réalisées à partir de carottes de glace montrent que le CO2 commence à augmenter autour de 800 ans (entre 600 à 1000 ans) après le démarrage de l’augmentation de température lors des terminaisons glaciaires. Ces terminaisons sont les périodes de réchauffement qui marquent la fin des périodes glaciaires et qui se produisent tous les 100 000 ans.
[Read more…] about What does the lag of CO2 behind temperature in ice cores tell us about global warming?
RealClimate is a commentary site on climate science by working climate scientists for the interested public and journalists and has been operating since Dec 2004. We aim to provide the context sometimes missing in mainstream commentary on climate science. The discussion here is mostly restricted to scientific topics though we maintain open threads for the political or economic implications of the science and for discussions of possible solutions. All posts are signed by the author(s), except ‘group’ posts which are collective efforts from the whole team. Please note this is a moderated forum.
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Measure of the pressure gradient between the polar and subpolar regions of the Southern Hemisphere. Term was introduced by Thompson and Wallace (2000). More information on the AAO can be found here. See also Arctic Oscillation (“AO”).