Confirmation of Solar forcing of the semi-annual variation of length-of-day

Confirmation of Solar forcing of the semi-annual variation of length-of-day. December 23rd gave us Anthony Watts’ first Christmas Guest, and Paul Vaughn (M.Sc.) served up a delightful slice of Dunning-Kruger pudding. There’s nothing a denialist likes more than a new and obscure correlation to (briefly) divert the conversation… Causation is for sissies.

Paul wants to show that Earth’s Length of Day is influenced by cosmic rays, which slightly affect atmospheric density. Hence, using the power of wishful thinking, all Global Warming is natural and will reverse itself. Eventually. Paul gives us lots of cluttered stock promoter-style charts, spreading a tiny proportional change over a full chart range. You’d think an analytical genius like, perhaps, Steve McIntyre would call him to task on it wouldn’t you?

Yes, atmospheric and oceanic angular momentum impacts Length of Day. Trivially. This influence, measured as being on the order of one millisecond out of 86,400,000 over a period of months, is significant? Try again. Cue the ignorant arguments about magnetic fields in the comments.

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