"Col" wrote in message
...
Tudor Hughes wrote:
On Nov 24, 1:53 pm, Richard Dixon wrote:
On Nov 24, 1:04 pm, Stephen Davenport wrote:

The High is not real anyway because MSL pressures over
the Greenland icecap are meaningless. The place only has "mean sea
level" at the edges and the interior is far too high for any
extrapolation to sea level to be useful. It's probably best to regard
Greenland as a discontinuity in the MSL pattern and to regard the
isobars as formalities which do not necessarily bear any relation to
the circulation at the land surface. The same is true of Antarctica,
even more so because of the greater extent and altitude of the
continent.

Are isobars over other extensive highland areas such as the
Tibetan plateau regarded in the same fashion?
--
Col

Bolton, Lancashire
160m asl
Yes - a bit like thickness charts. There's so much interpolation down to
sea level that they are pretty much worthless.

--
Freddie
Bayston Hill
Shropshire
102m AMSL
http://www.hosiene.co.uk/weather/cumulus/