A remarkable looking chart for Eastern Greenland with some of the tightest packed isobars over the North Atlantic area I have ever seen. One wonders what sort of wind speeds could be generated? The wind chill must be incredible with the wind from due north.

On Tuesday, 2 December 2014 23:17:35 UTC, wrote:
A remarkable looking chart for Eastern Greenland with some of the tightest packed isobars over the North Atlantic area I have ever seen. One wonders what sort of wind speeds could be generated? The wind chill must be incredible with the wind from due north.

You might find responders thin on the ground due to bigoted views about Gmail and google trying to steal Usenet. Another problem you may have is being taken for another Dawlish sock as he is somewhat mental or ignorant (probably both.)

You might like to try adding a link to the chart or as it is ephemeral steal a march on the regulars by posting it onto a more permanent home.

On Tuesday, December 2, 2014 11:17:35 PM UTC, wrote:
A remarkable looking chart for Eastern Greenland with some of the tightest packed isobars over the North Atlantic area I have ever seen. One wonders what sort of wind speeds could be generated? The wind chill must be incredible with the wind from due north.

You have to be a bit careful in interpreting charts near the east Greenland coast. Some of the gradients are shown as falsely steep due to the correcting of the surface pressure over the Greenland plateau to sea level.

There are other's on USW who no more about the problem them me.

Graham
Penzance - fantastic sunsise today.

On Wed, 3 Dec 2014 01:38:53 -0800 (PST)
Graham Easterling wrote:

On Tuesday, December 2, 2014 11:17:35 PM UTC,
wrote:
A remarkable looking chart for Eastern Greenland with some of the
tightest packed isobars over the North Atlantic area I have ever
seen. One wonders what sort of wind speeds could be generated? The
wind chill must be incredible with the wind from due north.

You have to be a bit careful in interpreting charts near the east
Greenland coast. Some of the gradients are shown as falsely steep due
to the correcting of the surface pressure over the Greenland plateau
to sea level.

There are other's on USW who no more about the problem them me.


Yes, tight gradients there are quite common and, as you say, often
quite meaningless. I see winds along that coast at 06Z this morning
range from 5kts to 60kts.
http://www.wetterzentrale.de/topkarten/fsbeobl.html

I know several forecasters, when drawing up the surface chart, used to
just stop the isobars at the Greenland coast. As well as being more
realistic, it saved on pencils.

--
Graham P Davis, Bracknell, Berks.
[Retired meteorologist and computer programmer]
Posted with Claws: http://www.claws-mail.org/

"Graham P Davis" wrote in message
news:20141203110351.753c7069@linux-tn3p...
On Wed, 3 Dec 2014 01:38:53 -0800 (PST)
Graham Easterling wrote:

On Tuesday, December 2, 2014 11:17:35 PM UTC,
wrote:
A remarkable looking chart for Eastern Greenland with some of the
tightest packed isobars over the North Atlantic area I have ever
seen. One wonders what sort of wind speeds could be generated? The
wind chill must be incredible with the wind from due north.

You have to be a bit careful in interpreting charts near the east
Greenland coast. Some of the gradients are shown as falsely steep due
to the correcting of the surface pressure over the Greenland plateau
to sea level.

There are other's on USW who no more about the problem them me.


Yes, tight gradients there are quite common and, as you say, often
quite meaningless. I see winds along that coast at 06Z this morning
range from 5kts to 60kts.
http://www.wetterzentrale.de/topkarten/fsbeobl.html

I know several forecasters, when drawing up the surface chart, used to
just stop the isobars at the Greenland coast. As well as being more
realistic, it saved on pencils.


I used to do dashed isobars over the Alps. MSLP is meaningless for ground
above 1500 metres. Gosh eraser and 4B pencil - those were the days, I went
through erasers incredibly quickly iirc :-)

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------

Graham P Davis wrote:

On Wed, 3 Dec 2014 01:38:53 -0800 (PST)
Graham Easterling wrote:

On Tuesday, December 2, 2014 11:17:35 PM UTC,
wrote:
A remarkable looking chart for Eastern Greenland with some of the
tightest packed isobars over the North Atlantic area I have ever
seen. One wonders what sort of wind speeds could be generated? The
wind chill must be incredible with the wind from due north.

You have to be a bit careful in interpreting charts near the east
Greenland coast. Some of the gradients are shown as falsely steep due
to the correcting of the surface pressure over the Greenland plateau
to sea level.

There are other's on USW who no more about the problem them me.


Yes, tight gradients there are quite common and, as you say, often
quite meaningless. I see winds along that coast at 06Z this morning
range from 5kts to 60kts.
http://www.wetterzentrale.de/topkarten/fsbeobl.html

I know several forecasters, when drawing up the surface chart, used to
just stop the isobars at the Greenland coast. As well as being more
realistic, it saved on pencils.

When I was an Assistant in the Met Office at Prestwick in the early 1960s we
would often plot hourly British Isles surface charts during spells of
particularly mobile weather. The chart didn't extend far enough west for the
obs from OWS 'I' and 'J' to be plotted in their correct positions. Instead,
they were usually plotted somewhere in the left hand margin, often fairly close
together. I recall one day when a very green SO was the Senior Forecaster (most
were SXOs) he diligently analysed one of these charts, fitting 'I' and 'J'
where they were plotted and producing the most horrendous westerly gradient
into the west of Ireland. Formal education and training isn't everything. A few
trips 'round the block' are useful as well :-)

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
http://peakdistrictweather.org

"Norman" wrote in message
...
Graham P Davis wrote:

On Wed, 3 Dec 2014 01:38:53 -0800 (PST)
Graham Easterling wrote:

On Tuesday, December 2, 2014 11:17:35 PM UTC,
wrote:
A remarkable looking chart for Eastern Greenland with some of the
tightest packed isobars over the North Atlantic area I have ever
seen. One wonders what sort of wind speeds could be generated? The
wind chill must be incredible with the wind from due north.

You have to be a bit careful in interpreting charts near the east
Greenland coast. Some of the gradients are shown as falsely steep due
to the correcting of the surface pressure over the Greenland plateau
to sea level.

There are other's on USW who no more about the problem them me.


Yes, tight gradients there are quite common and, as you say, often
quite meaningless. I see winds along that coast at 06Z this morning
range from 5kts to 60kts.
http://www.wetterzentrale.de/topkarten/fsbeobl.html

I know several forecasters, when drawing up the surface chart, used to
just stop the isobars at the Greenland coast. As well as being more
realistic, it saved on pencils.

When I was an Assistant in the Met Office at Prestwick in the early 1960s
we
would often plot hourly British Isles surface charts during spells of
particularly mobile weather. The chart didn't extend far enough west for
the
obs from OWS 'I' and 'J' to be plotted in their correct positions.
Instead,
they were usually plotted somewhere in the left hand margin, often fairly
close
together. I recall one day when a very green SO was the Senior Forecaster
(most
were SXOs) he diligently analysed one of these charts, fitting 'I' and 'J'
where they were plotted and producing the most horrendous westerly
gradient
into the west of Ireland. Formal education and training isn't everything.
A few
trips 'round the block' are useful as well :-)


ROFL we had a similar problem with Shetland on the British Isles chart, easy
to do at the end of a hard night shift!

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------

On Wednesday, December 3, 2014 11:33:56 AM UTC, wrote:

Gosh eraser and 4B pencil - those were the days, I went
through erasers incredibly quickly iirc :-)


==========

I seem to recall a frequent shortage of 4B pencils as well, because Ray Nurney (?) used to hoard them.

Graham Parker at London weather Centre, on the very first day of my career, told me that meteorology was a very "pencil and eraser" sort of profession.. Not so much now but I still love to get immersed analysing a chart, and encourage our newer forecasters to do the same - it'll be a dying art otherwise.

I still stop at Greenland, though...

Stephen.

"Stephen Davenport" wrote in message
...
On Wednesday, December 3, 2014 11:33:56 AM UTC,
wrote:

Gosh eraser and 4B pencil - those were the days, I went
through erasers incredibly quickly iirc :-)

==========

I seem to recall a frequent shortage of 4B pencils as well, because Ray
Nurney (?) used to hoard them.
===============

Ah yes Ray Nurney, he was a dour sort of chappie, nice though.
Purple crayons were always in short supply. My favourite was blue as that
was what you used to colour sleet/snow obs as. :-)
Haven't drawn up a chart for 20 years.
===============

Will
--
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm
Will Hand (Haytor, Devon, 1017 feet asl)
---------------------------------------------

On Wed, 3 Dec 2014 14:10:14 -0000
"Eskimo Will" wrote:


"Stephen Davenport" wrote in message
...
On Wednesday, December 3, 2014 11:33:56 AM UTC,
wrote:

Gosh eraser and 4B pencil - those were the days, I went
through erasers incredibly quickly iirc :-)

==========

I seem to recall a frequent shortage of 4B pencils as well, because
Ray Nurney (?) used to hoard them.
===============

Ah yes Ray Nurney, he was a dour sort of chappie, nice though.
Purple crayons were always in short supply. My favourite was blue as
that was what you used to colour sleet/snow obs as. :-)
Haven't drawn up a chart for 20 years.
===============


"Purple crayons in short supply"? You young whippersnappers don't know
yer born; when I were a lad, we 'ad to buy air own purple pencils as
they weren't guvmint issue - either that or mix red and blue.

--
Graham P Davis, Bracknell, Berks.
[Retired meteorologist and computer programmer]
Posted with Claws: http://www.claws-mail.org/