In message , Adrian writes
On 2011-10-10, Stephen Davenport wrote:
1013.25 hPA is average sea-level pressure.

Our of interest, does that mean that Mr. Bar, Monsieur Pascal or whoever,
got his measurements slightly wrong?

Adrian

I was wondering about that. Wikipedia tells me that the unit is down to
William Napier Shaw, and that a bar is 10^5 pascals. The similarity to 1
atmosphere is semi-coincidental (if it wasn't so close there would have
been less motivation to define the bar).

The name derives from the Greek baros, meaning weight.
--
Stewart Robert Hinsley