Bob Tisdale fancies himself as an ENSO expert, yet he doesn't show that in his WUWT article today (archived here). He's complaining that a couple of days ago NOAA removed the "watch" status for La Nina. Bob's headline was "NOAA Cancels La Niña Watch While La Niña Conditions Exist". Well, he seems to be the only person who thinks La Nina conditions exist. Oh, except maybe for Anthony Watts who, way back in June, declared that we are already having a La Nina.Today Bob Tisdale wrote:
Regardless of the existing (and strengthening) La Niña conditions, NOAA has canceled its La Niña Watch, which had been in effect since April.Except there are not conditions currently existing for La Nina. Bob's wrong. This is where he was wrong - almost everywhere:
- Bob didn't base his assessment on the ENSO definition's standard of the ONI, which is a 3 month running mean;
- He based his current sea surface temperature anomaly in the Nino 3.4 region on the wrong average baseline, making it appear approx 0.4 C colder than it is (the cutoff is -0.5 C) (h/t Rattus Norvegicus);
- He used the wrong dataset (Reynolds OI v2), not the one used as standard for ENSO estimates (ERSST v4).
Summary added by Sou 4:57 pm 10 September 2016








