"Adrian D. Shaw" wrote in message
...
Felly sgrifennodd Martin Rowley
:
Following various threads recently relating to Meteograms, 'Hauptlauf'
and the applicability of ensembles many days out, I have added the
following to the FAQ pages relating to models:-

http://homepage.ntlworld.com/booty.w...NS_diagram.htm

Thanks Martin, very informative.

I assume that the "Hauptlauf" is the same as you call the "control
run"
under the entry for "Ensemble" in the FAQ.

.... The original german on the appropriate page doesn't make this
clear, but I reason that "Hauptlauf", being the 'main run' is the
*operational* run. This would make more sense, as you need to look at
the ensemble output against the 'OP' run to judge whether the latter is
giving a reasonable signal. The 'control' is of little use per se as we
don't see its output.

Martin.