Get Laki, Get Unlaki

Guest Post by Willis Eschenbach Well, we haven’t had a game of “Spot The Volcano” in a while, so I thought I’d take a look at what is likely the earliest volcanic eruption for which we have actual temperature records. This was the eruption of the Icelandic volcano Laki in June of 1783. It is claimed to…

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Cycling in Central England

Guest Post by Willis Eschenbach Looking at a recent article over at Tallbloke’s Talkshop, I realized I’d never done a periodogram looking for possible cycles in the entire Central England Temperature (CET) series. I’d looked at part of it, but not all of it. The CET is one of the longest continuous temperature series, with…

Two years to a 1740-type event?

Guest essay by David Archibald Wiggle-matching has been used by the best. Hubert Lamb, considered to be the most meticulous climatologist of all time, used wiggle-matching in this wind data graph he published in 1988: He had plotted up 600 years of wind data at London, noted a 200 year periodicity and copied the line…

Improbable Maximum Precipitation

Guest post by Willis Eschenbach There’s a new study out from NOAA called “Probable maximum precipitation (PMP) and climate change”, paywalled of course, which claims that global warming will lead to a 20%-30% increase in “probable maximum precipitation”. The abstract says: Probable Maximum Precipitation (PMP) is the greatest accumulation of precipitation for a given duration…