Dr Gerald KutneyDec 4, 2022
Dr. @MichaelEMann
may well be the most hated scientist in conservative America, especially for his peer-reviewed studies, including "THE GRAPH," which upsets their deep devotion to climate denialism.
https://factcheck.afp.com/doc.afp.com.32KW973
Video falsely claims scientists exaggerated 'hockey stick' climate chart

A speaker in a video viewed hundreds of thousands of times on social media claims scientists removed data from a graph to exaggerate global warming. This is false; the chart includes global data that make regional warming stand out less, and such periods do not disprove human-caused climate change.

Fact Check
Show threadWayne
@GeraldKutney @MichaelEMann can anyone explain to me why the mediaeval warm period isn't warmer than the preceding years?
Dec 5, 2022 at 4:16amMastodon for Android
Show threadCooperJDec 5, 2022
@pucky @GeraldKutney @MichaelEMann The graph shows average global temp but so-called medieval warm period was not a global phenomenon.
Show threadscowlingmonkeyDec 5, 2022

@pucky @GeraldKutney @MichaelEMann

It was warmer in some areas, mostly in the North Atlantic, cooler in others, and cooler as a global average.

There’s a good explainer here:
https://skepticalscience.com/medieval-warm-period.htm

How does the Medieval Warm Period compare to current global temperatures?

<p>While the Medieval Warm Period saw unusually warm temperatures in some regions, globally the planet was cooler than current conditions.</p>

Skeptical Science
Show threadMarkDec 5, 2022
@GeraldKutney @pucky @MichaelEMann the article linked in the original post covers this question.
Show threadDr Gerald KutneyDec 5, 2022
@pucky @MichaelEMann - it was a regional, not global, event.
Show threadA. Suárez MascareñoDec 10, 2022
@pucky @GeraldKutney @MichaelEMann It was a regional temperature anomaly, not a global one.
Show threadCedric Knight 🌍💙Dec 20, 2022
@pucky @GeraldKutney @MichaelEMann
I'll have a go as a non-expert. Two things about the Mediaeval Warm Period are a) it wasn't a global event https://doi.org/10.1038/s41586-019-1401-2 , b) the global century-on-century trend is roughly cooling since the Holocene thermal maximum 6,500 years ago, so 'warm' is not a misnomer in relation to what followed https://ncbi.nlm.nih.gov/pmc/articles/PMC6675609/. (Choice of proxies or methods may give slightly different results, but Mann et al 98 has been replicated many times since.)