On Tue 2022-07-26T23:33:15+0000 Poul-Henning Kamp hath writ: > So looking at the IERS LOD plot going all the way back it seems to > me that we have been missing the big signal for about five decades: > > > https://datacenter.iers.org/singlePlot.php?plotname=EOPC04_14_62-NOW_IAU2000A-LOD&id=224 > > How did we not notice that earlier ?
even better is the view from the Paris bureau at https://hpiers.obspm.fr/eop-pc/index.php which at the moment is showing a Vondrak filtering of the data with the predictable tidal terms removed. Even better would be to remove the UT2 semi/annual variation. caveat is that plot may change before you all look at it. The rotation of the earth's crust started accelerating right when the CCIR decided that we should start using leap seconds. karma -- Steve Allen <s...@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 https://www.ucolick.org/~sla/ Hgt +250 m _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com https://pairlist6.pair.net/mailman/listinfo/leapsecs
