Hi all,

I'm really sorry to keep bothering the newsgroup with this, but I'm writing
my dissertation on a series of storms that produced a lot of electrical
activity and hail in southern England on May 13th 2003 in unstable NW
airstream. I would be very grateful to anyone who has any data (any
whatsoever) from the area on this date.

Also, a satellite image exists that I desperately need. It is from 13th May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know it
exists as it is referenced in an article concerning the events I am trying
to analyse in Weather Vol. 58. Does anybody know how I go about finding this
image? I have tried Dundee and also Bernard Burton but this has not proved
successful.

Hopeful regards,

Jeremy Handscomb
3rd year Met. Student
Reading Uni, Berkshire

Also, a satellite image exists that I desperately need. It is from 13th May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know it
exists as it is referenced in an article concerning the events I am trying
to analyse in Weather Vol. 58

Jeremy,

But does it exist? Not according to the Dundee list of AVHRR passes for the
day; I suppose that is the problem you are reporting.

Now, I would hate to suggest that anything you read in Weather is not of the
highest level of accuracy ) but it could simply be an incorrect reference.
Unfortunately, my copies of Weather are at work; perhaps you could let us know
the reference to the paper and I will check the ref.

Julian Mayes (editor: Weather)
West Molesey,
Surrey.

"JJCMayes1" wrote in message
...
Also, a satellite image exists that I desperately need. It is from
13th May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know
it
exists as it is referenced in an article concerning the events I am
trying
to analyse in Weather Vol. 58

Jeremy,

But does it exist? Not according to the Dundee list of AVHRR passes
for the
day; I suppose that is the problem you are reporting.

Now, I would hate to suggest that anything you read in Weather is not
of the
highest level of accuracy ) but it could simply be an incorrect
reference.
Unfortunately, my copies of Weather are at work; perhaps you could let
us know
the reference to the paper and I will check the ref.

.... as I went to the copy I'll oblige:
It is mentioned in the article "Hailfalls at Woodlands St.Mary, West
Berkshire 13 May 2003"
auth: WS Pike
Vol 58, December.

He makes reference to NOAA-12 AVHRR pass at 1704BST (1604GMT) in the
text which he says shows 'cloud strees' ... I too had a look at the
Dundee site and can't find this pass: all seem to be NOAA-16 or 17, so I
assume Bill is using APT to acquire NOAA-12 locally???

Martin.

Thanks for all your help, Martin. What does APT mean and were you being
serious?!

Jeremy

"Martin Rowley" wrote in message
...

"JJCMayes1" wrote in message
...
Also, a satellite image exists that I desperately need. It is from
13th May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know
it
exists as it is referenced in an article concerning the events I am
trying
to analyse in Weather Vol. 58

Jeremy,

But does it exist? Not according to the Dundee list of AVHRR passes
for the
day; I suppose that is the problem you are reporting.

Now, I would hate to suggest that anything you read in Weather is not
of the
highest level of accuracy ) but it could simply be an incorrect
reference.
Unfortunately, my copies of Weather are at work; perhaps you could let
us know
the reference to the paper and I will check the ref.

... as I went to the copy I'll oblige:
It is mentioned in the article "Hailfalls at Woodlands St.Mary, West
Berkshire 13 May 2003"
auth: WS Pike
Vol 58, December.

He makes reference to NOAA-12 AVHRR pass at 1704BST (1604GMT) in the
text which he says shows 'cloud strees' ... I too had a look at the
Dundee site and can't find this pass: all seem to be NOAA-16 or 17, so I
assume Bill is using APT to acquire NOAA-12 locally???

Martin.

"Jeremy Handscomb" wrote in message
...
Thanks for all your help, Martin. What does APT mean and were you
being
serious?!


APT = automatic picture transmission; this is the system whereby you can
pull-down imagery as the satellite passes overhead your location; I'm
out of date on all this now (Bernard B. may be able to help), but as a
sproggy Assistant on a lonely island off Oman in the early '70's, we
used to have to go to a little hut at certain times and *manually* point
the aerial array at the NOAA satellites (and we tried for the Russian
Meteor's too), as they passed overhead. You had to work out the
horizon-azimuth, times etc from the NOAA-predicts., then point the array
and wait for the signal. The aerial was tracked as the spacecraft passed
overhead, and the image was downloaded line by line (the spacecraft had
a scanning mirror which acquired the earth-view at the sub-satellite
point), and read onto a facsimile recorder ... then you had to choose
the appropriate lat/long grid to trace on to the image etc.

All a bit of a black art, and I'm sure it's a lot more sophisticated
now!

Have you tried to contact Bill Pike? He may have the image you require.

Martin.

Ahhh...

Thanks. I was going to leav direct contact with the author until my other
avenues of investigation were closed as I only have a postal address for him
and in this day and age impatience would get the better of me!

Jeremy

"Martin Rowley" wrote in message
...

"Jeremy Handscomb" wrote in message
...
Thanks for all your help, Martin. What does APT mean and were you
being
serious?!


APT = automatic picture transmission; this is the system whereby you can
pull-down imagery as the satellite passes overhead your location; I'm
out of date on all this now (Bernard B. may be able to help), but as a
sproggy Assistant on a lonely island off Oman in the early '70's, we
used to have to go to a little hut at certain times and *manually* point
the aerial array at the NOAA satellites (and we tried for the Russian
Meteor's too), as they passed overhead. You had to work out the
horizon-azimuth, times etc from the NOAA-predicts., then point the array
and wait for the signal. The aerial was tracked as the spacecraft passed
overhead, and the image was downloaded line by line (the spacecraft had
a scanning mirror which acquired the earth-view at the sub-satellite
point), and read onto a facsimile recorder ... then you had to choose
the appropriate lat/long grid to trace on to the image etc.

All a bit of a black art, and I'm sure it's a lot more sophisticated
now!

Have you tried to contact Bill Pike? He may have the image you require.

Martin.

On Wed, 4 Feb 2004 07:44:25 -0000, Martin Rowley wrote in

snip
APT = automatic picture transmission; this is the system whereby you can
pull-down imagery as the satellite passes overhead your location; I'm
out of date on all this now (Bernard B. may be able to help), but as a
sproggy Assistant on a lonely island off Oman in the early '70's, we
used to have to go to a little hut at certain times and *manually* point
the aerial array at the NOAA satellites (and we tried for the Russian
Meteor's too), as they passed overhead. You had to work out the
horizon-azimuth, times etc from the NOAA-predicts., then point the array
and wait for the signal. The aerial was tracked as the spacecraft passed
overhead, and the image was downloaded line by line (the spacecraft had
a scanning mirror which acquired the earth-view at the sub-satellite
point), and read onto a facsimile recorder ... then you had to choose
the appropriate lat/long grid to trace on to the image etc.

All a bit of a black art, and I'm sure it's a lot more sophisticated
now!

I'm sure it is, although the basics would be the same. This brings to mind
the setup I used for many years. I had a large dish on the roof above me
for the Meteosat images and an omni-directional antenna for the polar
orbiting satellites, such as NOAA and the Russian ones. I used to be able
to pick them up first when they were at a latitude around central Greenland
and tracked them down to N. Africa. With the type of antenna I used no
tracking was needed.

I had software which would tell me when I should first hear the signals
and, by and large, it was very accurate. The Russian signals had a very
distinctive sound to them, which I can still "hear" even now. The images
appeared on the computer monitor and later printed off. I think Offenbach
(DWD) used to retransmit NOAA images over their FAX system and those used
to be of very high quality when used with the correct FAX paper (made for
such images with all the shades of grey).

I think I stopped around 1994 when online and real time images started to
become available.

--
Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 04/02/2004 09:32:35 UTC
Temp +8.3C and rising.

A quick google search suggests that NOAA 12 AVHRR images for 2003 are
archived here (though doesn't seem to be any online access):

http://www.dfd.dlr.de/stations/fifo/roll.html

David


--


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"Jeremy Handscomb" wrote in message
...
Hi all,

I'm really sorry to keep bothering the newsgroup with this, but I'm
writing
my dissertation on a series of storms that produced a lot of electrical
activity and hail in southern England on May 13th 2003 in unstable NW
airstream. I would be very grateful to anyone who has any data (any
whatsoever) from the area on this date.

Also, a satellite image exists that I desperately need. It is from 13th
May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know it
exists as it is referenced in an article concerning the events I am trying
to analyse in Weather Vol. 58. Does anybody know how I go about finding
this
image? I have tried Dundee and also Bernard Burton but this has not proved
successful.

Hopeful regards,

Jeremy Handscomb
3rd year Met. Student
Reading Uni, Berkshire

On Tue, 3 Feb 2004 15:32:06 -0000, Jeremy Handscomb wrote in

snip
Also, a satellite image exists that I desperately need. It is from 13th May
2003 and taken at 1704BST. It was taken by NOAA-12 AVHRR and I know it
exists as it is referenced in an article concerning the events I am trying
to analyse in Weather Vol. 58. Does anybody know how I go about finding this
image? I have tried Dundee and also Bernard Burton but this has not proved
successful.

A search using Google led me to these images. I think they are the ones
you may need, though the quality isn't too good.

http://www-grtr.u-strasbg.fr/quickNo...3/62320412.jpg

That is channel 4 and for channel 2

http://www-grtr.u-strasbg.fr/quickNo...3/62320212.jpg

There appears to be some severe convection in the south and east.

--
Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 04/02/2004 23:15:17 UTC

On Wed, 4 Feb 2004 23:15:17 +0000, Mike Tullett wrote in

snip
A search using Google led me to these images. I think they are the ones
you may need, though the quality isn't too good.

http://www-grtr.u-strasbg.fr/quickNo...3/62320412.jpg

That is channel 4 and for channel 2

http://www-grtr.u-strasbg.fr/quickNo...3/62320212.jpg

There appears to be some severe convection in the south and east.

And some more, covering a larger area

http://www-grtr.u-strasbg.fr/quickNo...3/62320212.jpg
http://www-grtr.u-strasbg.fr/quickNo...3/62320312.jpg
http://www-grtr.u-strasbg.fr/quickNo...3/62320412.jpg

Those are channels 2-4

--
Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 04/02/2004 23:21:38 UTC