Line of average pressure

Archive of NZ Weather & Climate
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.

For today's weather discussion head to: New Zealand Weather & Climate
wembley
Posts: 157
Joined: Fri 22/03/2013 11:18
Location: Cromwell

Line of average pressure

Unread post by wembley »

Is the line of average pressure (boundary between anticyclones and depressions) 1015 milibars?
Top
User avatar
David
Posts: 7651
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland

Re: Line of average pressure

Unread post by David »

Weatheronline.co.nz uses 1013 hPa as the boundary. I don't think it can truly be thought of as a boundary between what is an anticyclone and what is a depression though, rather it shows areas of above normal and below normal pressure. The NZ average is about 1013 hPa from memory.
Image
Top
NZ Thunderstorm Soc
Posts: 19101
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: Line of average pressure

Unread post by NZ Thunderstorm Soc »

I use 1013.2 hPa, but in saying so, there can be be depressions in anticyclone/ridge areas and highs in areas of low pressure. :smile:
JohnGaul
NZThS
Top
tunster
Posts: 117
Joined: Thu 05/11/2009 13:55
Location: Kelburn, Wellington

Re: Line of average pressure

Unread post by tunster »

Highs and Lows are relative, not absolute, so there is no fixed, permanent global boundary between them.
Top

Return to “2014”