HeyJaredJohn Dee's Climate Normal
A retired UK G7 government scientist, Ministerial policy advisor, and former head of a statistical modelling section puts down the pruning shears to explore the story of climate change as told through numbers. Articles are a mix of free and pay-to-view.
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- 12
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- Sep 30, 2026
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- Jul 8, 2026
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Too Hot For Granny (part 1) (opens the original)
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I did this once before, back on 28th July 2023, when I couldn’t bite my tongue any further after the biggest pile of inane drivel was vomited by the UN Secretary General. Here’s a screenshot of the note I posted:<img alt="" class="sizing-normal"
Founding Member Equinox Treat (opens the original)
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The urban heat island effect bothers me. I’ve seen it for myself in terms of Stevenson screens perched on roofs and next to runways, and we’ve all seen it on TV when the weather person reports on a cold winter’s day that “it’ll be a little bit warmer than this in our cities”. Somehow, they always seem to forget to mention it’ll be cooler in rural areas on warm summer days. Then there’s the Hadley Centre’s mysterious statement concerning adjustment of the Central England Temperature Record (HadCE
Summer Rainfall in South West England (opens the original)
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I was sitting here at my workstation sipping organic rooibos tea and wondering what article series to pen next, when an email popped-in from Wessex Water. Here’s what they had to say:Thanks to all our water supply customers for your support following the introduction of our first hosepipe ban in 50 years in August. The amount of water being used each day across our region has reduced significantly since the restrictions came into effect, which is a positive step in the right direction following
Heatwaves & Death (part 7) (opens the original)
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As promised, I have been rummaging for date of occurrence death data for the older age groups, and I have found a decent slice of it for the period 1981 – 2019, that I had stashed back when I was analysing pandemic statistics like crazy over in John Dee’s Almanac. I also happen to have population estimates by quinary age band and so can derive mortality (deaths/100k) for those aged 65 years and over. Nice.I think this is the way to go, because I’ve spent another few hours behind the scenes tryin
Heatwaves & Death (part 6) (opens the original)
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Now that I’ve got my readership excited wrt granular date of death data, I perhaps ought to mention a big, big problem. I had thought it would be useful to compare all cause mortality for warmer summers with mortality for cooler summers to rule out any quirky behavioural changes and other seasonal risk factors such as BBQ, skinny-dipping, adventure sports and holiday travel. But here’s the problem, expressed as a time series plot for the HadCET mean maximum daily temperature for the months of Ju
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