A #science writer who puts science above political correctness; #author of "Science Under Attack: The Age of Unreason" (2018) and "Global Warming False Alarm".
@ClimateRealists The same way as other temperature data, except there were no satellite measurements back then. The graph is from NASA/GISS, who as you're probably aware often manipulate data to erase such features.
@jhgage1@ClimateRealists I'm not convinced. The purple line has no sign of either the 1910-40 warming or the subsequent cooling spell. You could argue that the rate of ERF change does, but the dates don't correspond well.
Well Paul, I stand corrected! You evidently dug deeper than I did. My source was an Australian newspaper article on August 28, 1930 (https://t.co/4iu1xbdIR2), which apparently overlooked that all important detail and lazily just reported the temperature. So indeed 50°C was measured in the sun, which makes sense.
However, the same newspaper article reported a SHADE temperature in Paris that day of 37.8°C (100°F), stating that back in 1870 the thermometer had reached an even higher, unspecified level there – quite possibly above the July 2019 "record" of 42.6°C (108.7°F). The latter measurement came from the WMO, but the page is no longer on the Internet.
@socratesccost I wrote a blog post in 2021 summarizing what you've just set out: https://t.co/TP5dxkD97w
And Happer and van Wijngaarden subsequently published two more similar papers on CH4 and N20: https://t.co/klktg6O3Y5
https://t.co/0CWadBH3oG