Re: [Phys-l] atmospheric highs and lows

[Bernard Cleyet <bernardcleyet@redshift.com>]

I was telegraphic -- I meant > the P part of STP, i.e. 1013 mb, and sure enuf two places w/ 1016.   And JD succinctly stated my thought, i.e. a high doesn't exist, so I thought, as it dissipates rapidly.


bc  meteorologically challenged.



On 2010, Jun 27, , at 12:45, John Denker wrote:

> For example, if you look at the current Significant
> Weather chart
>  http://www.av8n.com/fly/sigwx0000-28jun10.gif
> you can see big blue capital H symbols, representing
> high pressure.
>
> To a first approximation:
>
> Surface low pressure areas tend to pull themselves 
> together, resulting in tight, almost pointlike cyclones 
> and sharp, almost one-dimensional weather fronts, 
> hence strong winds.  They are associated with rising 
> air, hence clouds and bad weather.
>
> Surface high pressure areas tend to spread out, so
> they tend to be large and diffuse, with light winds.
> They are associated with descending air, hence clear
> skies.  They are of more interest to weather mavens 
> than to the general public.