100 Years Later: The Flu

Guest Essay by Kip Hansen One hundred years have passed since the Great Influenza Pandemic of 1918 swept around the world, circumnavigating at least twice between 1918 and 1920, killing outright between 50 and 100 million human beings. The pandemic was so shattering, so pervasive that more accurate numbers of the dead cannot be calculated.…

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SIGNAL CONVOLUTION, MIDPOINT OF RANGE, AND ALL THAT

KEVIN KILTY Introduction A guest blogger recently1 made an analysis of the twice per day sampling of maximum and minimum temperature and its relationship to Nyquist rate, in an attempt to refute some common thinking. This blogger concluded the following: (1) Fussing about regular samples of a few per day is theoretical only. Max/Min temperature…

Nyquist, sampling, anomalies and all that

Guest post by Nick Stokes, Every now and then, in climate blogging, one hears a refrain that the traditional min/max daily temperature can’t be used because it “violates Nyquist”. In particular, an engineer, William Ward, writes occasionally of this at WUWT; the latest is here, with an earlier version here. But there is more to…

New study attempts to “squeeze out” uncertainty in climate models

From the “we’re gonna need a bigger computer” department. Climate model uncertainties ripe to be squeezed The latest climate models and observations offer unprecedented opportunities to reduce the remaining uncertainties in future climate change, according to a new study. Although the human impact of recent climate change is now clear, future climate change depends on how…

Durable Original Measurement Uncertainty

Guest Essay by Kip Hansen   Introduction: Temperature and Water Level (MSL) are two hot topic measurements being widely bandied about and vast sums of money are being invested in research to determine whether, on a global scale, these physical quantities — Global Average Temperature and Global Mean Sea Level — are changing, and if…

Nassim Taleb Strikes Again

Guest Post by Willis Eschenbach Following up on his brilliant earlier work “The Black Swan”, Taleb has written a paper called Error, Dimensionality, and Predictability (draft version). I could not even begin to do justice to this tour-de-force, so let me just quote the abstract and encourage you to read the paper.   Abstract—Common intuitions are…