"Rob Bale" wrote in message
...
"Victor West" wrote in message
...

"Rob Bale" wrote in message
...
They are using the 1961-1990 period which had a mean of 10.6°C,
whereas
the 1971-2000 period was 10.4°C


Ok, thanks for that. I should have thought of that.
When's the 1961-1990 average going to be consigned to history? It can be
slightly confusing.

Yes it is confusing. Maybe Philip can clear this up.

Wish I could ... perhaps someone from the UKMO gecananswer. I've been
using 1971-2000 averages since early in 2001. I don't see the problem. It
may
be that the WMO hasn't got round to changing yet, but I really don't see
why that should affect information for domestic consumption.

Philip Eden