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Today's Topics:
1. Re: BoM data feed to Australian Atmospheric Soundings website
(Mike Borgelt)
2. Re: BoM data feed to Australian Atmospheric Soundings website
(Mike Borgelt)
3. Re: BoM data feed to Australian Atmospheric Soundings website
(Mark Newton)
4. Re: BoM data feed to Australian
Atmospheric Soundings website
(David Griffiths)
5. TUG TOST release cable and handle (Darin McLean)
6. Re: BoM data feed to Australian Atmospheric Soundings website
(Mike Borgelt)
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 Aug 2014 10:02:15 +1000
From: Mike Borgelt <[email protected]>
Subject: Re: [Aus-soaring] BoM data feed to Australian Atmospheric
Soundings website
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
The wind speed and direction are far easier to understand on the BoM
chart. Whether it seems cluttered is just a function of how well you
know the chart. Once you figure it out it is very easy to ignore the
stuff you don't need.
Mike
Borgelt Instruments - design & manufacture of quality soaring
instrumentation since 1978
www.borgeltinstruments.com
tel: 07 4635 5784 overseas: int+61-7-4635 5784
mob: 042835 5784 : int+61-42835 5784
P O Box 4607, Toowoomba East, QLD 4350, Australia
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Message: 2
Date: Thu, 21 Aug 2014 10:07:23 +1000
From: Mike Borgelt <[email protected]>
Subject: Re: [Aus-soaring] BoM data feed to Australian Atmospheric
Soundings website
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
There also aren't any moist adiabats on Mark's chart. Means you can't
predict cloud tops.
Use the BoM F160. It is a professional tool and is what it is for
good reasons.
Matt Gage is right too. The chart tells you what was happening at the
time of the balloon flight. The airmass can always be modified by
advection as well as the amount of heating during the day.
If you fly at one place you can usually get a pretty good idea of
what surface wind/time of year etc will produce a good soaring day
even without the charts and models.
Mike
Borgelt Instruments - design & manufacture of quality soaring
instrumentation since 1978
www.borgeltinstruments.com
tel: 07 4635 5784 overseas: int+61-7-4635 5784
mob: 042835 5784 : int+61-42835 5784
P O Box 4607, Toowoomba East, QLD 4350, Australia
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Message: 3
Date: Thu, 21 Aug 2014 10:43:07 +1000
From: Mark Newton <[email protected]>
Subject: Re: [Aus-soaring] BoM data feed to Australian Atmospheric
Soundings website
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=windows-1252
On Aug 21, 2014, at 10:07 AM, Mike Borgelt
<[email protected]> wrote:
> Matt Gage is right too. The chart tells you what was happening at
the time of the balloon flight.
It used to, but it doesn?t anymore.
The chart is essentially an extract from the BoM?s global
atmospheric model. The date of the chart doesn?t necessarily bear
any resemblance to the date of the balloon (or, indeed, whether
there?s a balloon at all)
- mark
------------------------------
Message: 4
Date: Thu, 21 Aug 2014 11:02:55 +1000
From: "David Griffiths" <[email protected]>
Subject: Re: [Aus-soaring] BoM data feed to Australian Atmospheric
Soundings website
To: "'Discussion of issues relating to Soaring in Australia.'"
<[email protected]>
Message-ID: <019501cfbcdb$a8c7cd80$fa576880$@com>
Content-Type: text/plain; charset="us-ascii"
I check this sight every time before I go flying , So yes I find this web
site valuable.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Mark Newton
Sent: Wednesday, 20 August 2014 4:50 PM
To: Discussion of issues relating to Soaring in Australia.
Subject: [Aus-soaring] BoM data feed to Australian Atmospheric Soundings
website
G'day.
I've recently received email from the Bureau of Meteorology to say that the
data feed they've historically provided to make
http://slash.dotat.org/cgi-bin/atmos work will, in future, cost $1125 per
annum.
Or, more to the point: The data itself will continue to be free, but
there's a $1125 per annum fee to be a registered user of it.
I can get similar data at no cost from University of Wyoming's Upper Air
Project. In my experience, the sounding data from there is delayed by an
hour or so, because they get it from the BoM too, then process it before
they make it available.
I see a non-trivial number of HTTP server hits on my website, so I know
people are still using the facility. But server hits don't tell me if
they're getting value out of it.
So: Is it still useful?
My options, as I see them, are:
1. Pay BoM,
2. Refactor the code to fetch from UoW, and accept that it'll run a little
bit late; or 3. Shut down the site.
Currently leaning towards (2), but nobody is getting value out of it then
(3) is clearly my path of least resistance.
Thoughts, comments, requests?
- mark
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------------------------------
Message: 5
Date: Thu, 21 Aug 2014 11:14:25 +1000
From: Darin McLean <[email protected]>
Subject: [Aus-soaring] TUG TOST release cable and handle
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Message-ID:
<CAKhAjEUoPoDFf=hvxiiwt1vpuu2tkknpuhkmanwnvugkcbb...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
If anyone has a glider tug using a TOST release mechanism, could you please
contact me via reply email.
Our Maintenance Engineer is looking for a qualified design to use on a new
TUG.
We need at least some photos, any any further detail would be an added
bonus.
Thanks,
Darin
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Message: 6
Date: Thu, 21 Aug 2014 12:21:34 +1000
From: Mike Borgelt <[email protected]>
Subject: Re: [Aus-soaring] BoM data feed to Australian Atmospheric
Soundings website
To: "Discussion of issues relating to Soaring in Australia."
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
The models need updating or initialising with real observations.
According to the BoM in Brisbane, Brisbane at least still launches
balloons for the Observations they publish.
The bloke I spoke to thought this was also the case for the other
stations on the aerological diagrams page.
You can do all the modelling you like but weather models drift from
reality over time. A few days is all it takes. Nowadays they at least
still look like real weather charts. They didn't used to after a while.
Hence the need to update with real data.
Mike
At 10:43 AM 21/08/2014, you wrote:
>On Aug 21, 2014, at 10:07 AM, Mike Borgelt
><[email protected]> wrote:
>
> > Matt Gage is right too. The chart tells you what was happening at
> the time of the balloon flight.
>
>It used to, but it doesn't anymore.
>
>The chart is essentially an extract from the BoM's global
>atmospheric model. The date of the chart doesn't necessarily bear
>any resemblance to the date of the balloon (or, indeed, whether
>there's a balloon at all)
>
> - mark
>
>
>
>_______________________________________________
>Aus-soaring mailing list
>[email protected]
>To check or change subscription details, visit:
>http://lists.internode.on.net/mailman/listinfo/aus-soaring
Borgelt Instruments - design & manufacture of quality soaring
instrumentation since 1978
www.borgeltinstruments.com
tel: 07 4635 5784 overseas: int+61-7-4635 5784
mob: 042835 5784 : int+61-42835 5784
P O Box 4607, Toowoomba East, QLD 4350, Australia
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End of Aus-soaring Digest, Vol 131, Issue 27
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