Category Archives: differential equations
(Hat tip to Susan Stone.) The graphic below shows sea surface temperature anomalies relative to the 1971-2000 baseline First data are courtesy of the Climate Reanalyzer, a joint project of the Climate Change Institute at the University of Maine, and … Continue reading
Regulating Government. This post is about governments — with the advice of big banks — gaming pension accounts so they appear more solvent than they are.
Why Using El Nino to Forecast the Winter is Risky – Dan's Wild Wild Science Journal – AGU Blogosphere.
Originally posted on Dr Climate:
Give anyone working in the climate sciences half a chance and they’ll chew your ear off about CMIP5. It’s the largest climate modelling project ever conducted and formed the basis for much of the IPCC…
Jonah Bloch-Johnson, Ray Pierrehumbert, and Dorian Abbot have a new paper out in Geophysical Research Letters which is pretty exciting, at least for me, having to do with both climate and dynamical systems. They are far from the only ones … Continue reading
Highlighting the key parts of the Abstract of this very important paper below: The global temperature response to increasing atmospheric CO2 is often quantified by metrics such as equilibrium climate sensitivity and transient climate response1. These approaches, however, do not … Continue reading
Update. 26th February 2015 This is not directly related to the BEST project described in the YouTube video above, but the Berkeley National Laboratory has experimentally linked increases in radiative forcing with increases in atmospheric concentrations of CO2 due to … Continue reading
Originally posted on …and Then There's Physics:
I thought I might write about the new paper by Jochem Marotzke and Piers Forster called Forcing, feedback and internal variability in global temperature trends. It’s already been discussed in a Carbon…
Stable distributions or Lévy -stable models is a class of probability distributions which contains the Gaussian, the Cauchy (or Lorentz), and the Lévy distribution. They are parameterized by an which is . Values of of 1 or less give distributions … Continue reading
Originally posted on …and Then There's Physics:
Okay, I finally succumbed and actually waded through some of the new paper by Monckton, Soon, Legates & Briggs called Why models run hot: results from an irreducibly simple climate model. I…
These basic facts do not appear to be widely known, so it’s a good thing this classic paper is now available in a new, easily accessible form. David Archer, Michael Eby, Victor Brovkin, Andy Ridgwell, Long Cao, Uwe Mikolajewicz, Ken … Continue reading
Climate modelers and models see as their frontier the problem of dealing with spontaneous dynamics in systems such as atmosphere or ocean which are not directly forced by boundary conditions such as radiative forcing due to increased greenhouse gas (“GHG”) … Continue reading
This is interesting, because it shows how any particular observational history of Earth is one election of a large number of possible futures. This is exactly the same point made by Slava Kharin in his 2008 tutorial lecture “Statistical concepts … Continue reading
J. C. Hargreaves, J. D. Annan, “Can we trust climate models?”, WIREs Climate Change 2014, 5:435–440. doi: 10.1002/wcc.288. See also D. A. Stainforth, T. Aina, C. Christensen, M. Collins, N. Faull, D. J. Frame, J. A. Kettleborough, S. Knight, A. … Continue reading
NCAR’s CVDP, just written up in AGU’s EOS. The purpose, and links. The talk. Nicely done test engineering effort.
A scientific detective story. El Niño. How in the world did they figure that out? “Fishing in pink waters: How scientists unraveled the El Niño mystery“. By Daniel Gross. Hat tip to Greg Laden.
Professor Pierrehumbert offers his thoughts in Slate. He’s the author of Principles of Planetary Climate which is, as far as I’m concerned, the definitive climate book.
American Scientst has a nice article by Brian Hayes recounting the basic physics of climate, and then recommending both public engagement with clear, simple climate models, at least by the curious and scientifically literate, and the development of models which … Continue reading
See http://blogs.agu.org/wildwildscience/2014/08/10/weather-climate-models-work-meteorologists-learn-calculus/. 50 minute summary lecture there, by Professor Margot Gerritsen, embedded below, if you really want to know why and how. You, of course, don’t need to know. But, then, don’t criticize climate models, because you’ll be doing it … Continue reading
This is why small effects in the climate system can have BIG consequences. Even if the percentage change of CO2 due to human effects as a proportion of total atmospheric mass is very small, the consequences can, be, well, of … Continue reading
MITx: 12.340x: Global Warming Science | edX. Updated. 31st March 2014. Great interview and Q&A with Professor Professor Christopher Knittel of MIT on “Climate Change Policy that Makes Economic Sense“.
A trivariate, coupled dynamical system, and hints for using the carbon cycle to explain glacial-interglacial periods
I’m reading K. Soetaert, J. Cash, F. Mazzia, Solving Differential Equations in R. I know Professor Soetaert’s work, from the text co-authored with P. M. J. Herman, A Practical Guide to Ecological Modelling, and the several R packages he has contributed with others. … Continue reading