Plotting pressure in Hpa

This is the place to get help with Digital Atmosphere, suggest improvements, and get tips.
Post Reply
edwoodza
Member
Posts: 34
Joined: Mon Apr 07, 2008 11:42 am

Plotting pressure in Hpa

Post by edwoodza »

Anyone able to help a newbie on how to plot the pressure in hectopascals and not inch?
seems people this side cant understand anything other then hectopascals...simpletons

Peter
Member
Posts: 97
Joined: Sun Nov 13, 2005 10:03 pm
Location: Mid-Wales

Post by Peter »

I use DAWS and also have DA Equinox and both plot pressure in mb as standard.
1mb = 1 HPa and mb (HPa) is the standard international reporting unit.
I think only in North America are inches of Hg used as the rest of the world use HPa and deg C.

Scripting: H500 will give you temp etc at 500mb. Also SLP is Sea Level Pressure in mb.
DegC or degf temperature in whatever unit are specified ie. C or F

Regards

edwoodza
Member
Posts: 34
Joined: Mon Apr 07, 2008 11:42 am

Post by edwoodza »

Hi there, thanks for the fast response.

RE pressure:
When i generate it i get the QNG (hpa) at the H or Low pressure then the lines radiating out give it to me in mb. ie 23, 21, 19 etc i would prefer them to read 1021, 1022, 1023 etc etc
I need all the lines scale to be in hpa.

1mb=100hpa, so somehow i need to be able to get it to show the correct values.

Peter
Member
Posts: 97
Joined: Sun Nov 13, 2005 10:03 pm
Location: Mid-Wales

Post by Peter »

1mb = 1hpa they are the same unit but different names.

The display you are seeing is the normal display and I do not know any way of changing it. Maybe someone else does but my DAWS and DA Equinox display as 21,22, and not as 1021, 1022mb.

Regards

edwoodza
Member
Posts: 34
Joined: Mon Apr 07, 2008 11:42 am

Post by edwoodza »

if anyone knows how it will be great as people down here are a little slow to anything they have not seen before

edwoodza
Member
Posts: 34
Joined: Mon Apr 07, 2008 11:42 am

Post by edwoodza »

FINALLY think i found the solution
try:
HILO CONT CINT=1 LINE=1 ALT
gives the pressure in 4 digits and not 2

(well it worked just now and now seems to be messing with me)

Grant shulman
Junior Member
Posts: 2
Joined: Sat Mar 28, 2009 10:28 am
Location: south africa

Post by Grant shulman »

when hpa goes higher eg. 700-1005 does it means that the weather gets better or worse?

Greg Higgins
Member
Posts: 99
Joined: Sun Nov 30, 2003 5:05 am
Location: Fort Worth, TX

Post by Greg Higgins »

HPA has nothing to do with weather getting better of worse per se. It is a unit of measurement that is used in describing pressure. HPA and mb are the same, just different names. 500mb = pressure between 520 - 580mb / hpa.

Grant shulman
Junior Member
Posts: 2
Joined: Sat Mar 28, 2009 10:28 am
Location: south africa

Post by Grant shulman »

Ah oky Thanks,because i bought this watch that gives you hpa pressure so i just want to know what do i use it for?

Greg Higgins
Member
Posts: 99
Joined: Sun Nov 30, 2003 5:05 am
Location: Fort Worth, TX

Post by Greg Higgins »

You could correlate the pressure to height (distance above sea level) to know your elevation. Sounds like an aviators watch. Make sure you keep it calibrated.

Greg Higgins

Post Reply