Date   

vortex in the Canary Islands

gpwhitehead
 

I have made an animation of the vortex effect in the Canary islands today.

Can anyone tell me what the horizontal line is that starts at 07.00 and sweeps west across the islands wiping out the clouds as it goes until 13.45.

I used ch 12 in the first animation, so I looked at it again with Ch 1

it starts at Casablanca, and the line spreads right down to Dakar

Any ideas

Graham

----- Original Message -----
From: "James Brown" <satellite@meteosat.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Tuesday, May 09, 2006 11:58 AM
Subject: [MSG-1] A new HRV anomaly


Not sure if this has been seen before but there are some new artefacts
on the far edges of the Eastern (And Western) areas of the HRV northern
section this morning. They'll probably disappear soon but I don't
remember seeing them before.

Cheers
James
--
James Brown





Unsure what a term means? Check the Glossary at:
http://www.david-taylor.myby.co.uk/wxsat/glossary.htm


Yahoo! Groups Links










--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.392 / Virus Database: 268.5.4/332 - Release Date: 04/05/2006


receiving PC configuration - MSG & AVHRR

Giuseppe Cico
 

Hi all,
in past few days I changed my PC configuration, starting with my "2006-Xmas"
one.
All is working, and I want to share my experience.

Initial configuration was:
ABIT KV-85 MB
AMD Sempron 3100+
1G Ram, 300G hd ( 10 system; 10 spare(software packages)+virtual-mem; 280
eumetcast)
no ram-disk

Now I changed to:
... ( the same ) ... but 2G Ram , and "no virtual memory"
... and ... a 128M CompactFlash on embedded card-reader for Tellicast files.

I'm reveiving MSG and AVHRR, and updating hourly images and animations by
batch files.

Usual memory usage is about 600-900M, and I saw a peek of 1300M just while
running HRPTreader and other.

It seems working well only on physical mem.

I'm going to change CompactFlash with a wider and faster one, maybe a 2G, to
give system also some "emergency" virtual memory... maybe a CF-MicroDrive...

That's all for today

Ciao

Giuseppe


A new HRV anomaly

James Brown
 

Not sure if this has been seen before but there are some new artefacts on the far edges of the Eastern (And Western) areas of the HRV northern section this morning. They'll probably disappear soon but I don't remember seeing them before.

Cheers
James
--
James Brown


Re: Bracknel overlay

Mario Rindlisbacher
 

Thanks for the answer. Good idea with the text.

Mario

Robert Moore schrieb:

Mario there's nothing wrong with your image. There isn't any MSG-1 imagery to be cut out of the top left corner - the Bracknell chart wraps over the satellite horizon at this point. So we all have the triangular patch over Northern Greenland and Labrador. Quite useful if you want to put some text on the picture without intruding on the imagery!

Robert

--On 09 May 2006 10:33 +0200 Mario Rindlisbacher <rindlisbacher@meteotest.ch> wrote:


Hello,
I tried the Bracknel overlay option in Geosatsignal and I have the
problem, that the upper-left part of the image (northern
canada/greenland)) only shows the overlay, but the MSG image is cut. I
used the polar stereografic projection and a image resolution of 1024x768.

Any ideas what went wrong?

Thanks, Mario



44 (0) 1352 714456



Unsure what a term means? Check the Glossary at: http://www.david-taylor.myby.co.uk/wxsat/glossary.htm

Yahoo! Groups Links






--
----------------------------------------------------------------------
Mario Rindlisbacher email: mailto:rindlisbacher@meteotest.ch
METEOTEST phone: ++41 31 307 26 26
Fabrikstrasse 14 fax: ++41 31 307 26 10
CH - 3012 Bern www: http://www.meteotest.ch
----------------------------------------------------------------------
METEOFON - Fragen Sie unsere Prognostiker, wenn Sie eine
kompetente Wetterauskunft brauchen: 0900 57 61 52 Fr.3.13/min
----------------------------------------------------------------------


Re: Bracknel overlay

Robert Moore
 

Mario there's nothing wrong with your image. There isn't any MSG-1 imagery to be cut out of the top left corner - the Bracknell chart wraps over the satellite horizon at this point. So we all have the triangular patch over Northern Greenland and Labrador. Quite useful if you want to put some text on the picture without intruding on the imagery!

Robert

--On 09 May 2006 10:33 +0200 Mario Rindlisbacher <rindlisbacher@meteotest.ch> wrote:

Hello,
I tried the Bracknel overlay option in Geosatsignal and I have the
problem, that the upper-left part of the image (northern
canada/greenland)) only shows the overlay, but the MSG image is cut. I
used the polar stereografic projection and a image resolution of 1024x768.

Any ideas what went wrong?

Thanks, Mario



44 (0) 1352 714456


Re: Bracknel overlay

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Mario Rindlisbacher wrote:
Hello,
I tried the Bracknel overlay option in Geosatsignal and I have the
problem, that the upper-left part of the image (northern
canada/greenland)) only shows the overlay, but the MSG image is cut. I
used the polar stereografic projection and a image resolution of
1024x768. Any ideas what went wrong?
Thanks, Mario
Answered in the SatSignal group.

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.net
Email: davidtaylor@writeme.com
Send instant messages to your online friends http://uk.messenger.yahoo.com


Bracknel overlay

Mario Rindlisbacher
 

Hello,
I tried the Bracknel overlay option in Geosatsignal and I have the problem, that the upper-left part of the image (northern canada/greenland)) only shows the overlay, but the MSG image is cut. I used the polar stereografic projection and a image resolution of 1024x768.

Any ideas what went wrong?

Thanks, Mario

--
----------------------------------------------------------------------
Mario Rindlisbacher email: mailto:rindlisbacher@meteotest.ch
METEOTEST phone: ++41 31 307 26 26
Fabrikstrasse 14 fax: ++41 31 307 26 10
CH - 3012 Bern www: http://www.meteotest.ch
----------------------------------------------------------------------
METEOFON - Fragen Sie unsere Prognostiker, wenn Sie eine
kompetente Wetterauskunft brauchen: 0900 57 61 52 Fr.3.13/min
----------------------------------------------------------------------


Re: Technisat 2 driver problem

a_van_belle
 

Please be aware that the driver version supplied with new Skystars is
not the prefered version (currently 4.40 ?)
Eumetsat recommends driver version 4.30, newer versions have not been
fully tested with EUMETCast.
The correct version is on the CDROM that Eumetsat supplies.

Some reported that turning off HyperThreading is required.
Search this form on ACPI for more info.

Greetings,
Arne van Belle

--- In MSG-1@yahoogroups.com, "gronau100" <jvdbelt@...> wrote:

Hi everybody.

I am new here and try to setup the EUMETCAST system. I applied for the
USB token and the software which might come in a few days.

I bought a 1m dish and pointed at hotbird, I do receive TV channels.
Next step was installing the PCI SkyStar technisat card followed by
the driver.

The driver doens't want to start. According to the F.a.q. I installed
XP without ACPI , but that doesn't seem to help.

I tried another PC (a Dell), but during install, the PC hangs.

Any advice would be welcome.


Technisat 2 driver problem

gronau100 <jvdbelt@...>
 

Hi everybody.

I am new here and try to setup the EUMETCAST system. I applied for the
USB token and the software which might come in a few days.

I bought a 1m dish and pointed at hotbird, I do receive TV channels.
Next step was installing the PCI SkyStar technisat card followed by
the driver.

The driver doens't want to start. According to the F.a.q. I installed
XP without ACPI , but that doesn't seem to help.

I tried another PC (a Dell), but during install, the PC hangs.

Any advice would be welcome.


Re: HRV image deterioration

James Brown
 

In message <qgk2hgB9WwXEFwUS@meteosat.freeserve.co.uk>, James Brown <satellite@meteosat.co.uk> writes
Just to say that Eumetsat ops have been in touch with their usual speed
and efficient way - apparently the engineers are aware of the issue -
due to a limitation in the current software apparently - it is due to be
fixed today.

Hope this is the end of a long thread now!

Cheers
James
And its fixed - thanks to our engineers!

Cheers
James

--
James Brown


Re: HRV image deterioration

Giuseppe Cico
 

... but google hearth is not real-time-updated...
they're very kind and lovely...
Ciao
Giuseppe

BTW, when I recently showed some actual MSG-! and AVHRR images
to my sons, they just told me, look at google earth, they have much
better detail. Arrrrggggghhhhhhh... :)

Highly resolved cheers!

U.


Re: HRV image deterioration

Ulrich G. Kliegis
 

On 8 May 2006 at 9:47, James Brown wrote:

Just to say that Eumetsat ops have been in touch with their usual
speed and efficient way - apparently the engineers are aware of the
issue - due to a limitation in the current software apparently - it is
due to be fixed today.

Hope this is the end of a long thread now!
Not yet :)
At least, I am curious what the reason for these patterns is. Looking at
them again, the pattern resembles the misplacement of pixels that
occurs when rescaling or rotating images with unsufficient loacl
resolution - the rounding errors (which show a periodical pattern) might
lead to such artifacts.

BTW, when I recently showed some actual MSG-! and AVHRR images
to my sons, they just told me, look at google earth, they have much
better detail. Arrrrggggghhhhhhh... :)

Highly resolved cheers!

U.


Re: HRV image deterioration

James Brown
 

Just to say that Eumetsat ops have been in touch with their usual speed and efficient way - apparently the engineers are aware of the issue - due to a limitation in the current software apparently - it is due to be fixed today.

Hope this is the end of a long thread now!

Cheers
James
--
James Brown


Re: HRV image deterioration

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

R. Alblas wrote:
I did compare 2 HRV images:
may 6 2006 and april 27 2005.
No image file in-between, direct from raw files to viewer (xrit2pic).
Zoomed in to 1:1 (one pic-pixel on one screen-pixel); no difference
visible between the 2.
Zooming in more seems to show differences; the more recent HRV looks
like having a bit lower resolution, but counting pixels shows that
this isn't really the case.
If there is a difference then it is really very small.
See:
http://www.alblas.demon.nl/wsat/hrv_deter.zip
(contains 2 PGM pics, 16 bits per pixel format, translated 1:1 from
raw data) Rob Alblas
Thanks, Rob.

Your images show exactly the degradation that others have illustrated.

David
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.net
Email: davidtaylor@writeme.com




___________________________________________________________ Win tickets to the 2006 FIFA World Cup Germany with Yahoo! Messenger. http://advision.webevents.yahoo.com/fifaworldcup_uk/


Re: HRV image deterioration

R. Alblas
 

I did compare 2 HRV images:
may 6 2006 and april 27 2005.

No image file in-between, direct from raw files to viewer (xrit2pic).
Zoomed in to 1:1 (one pic-pixel on one screen-pixel); no difference visible
between the 2.
Zooming in more seems to show differences; the more recent HRV looks like
having a bit lower resolution, but counting pixels shows that this isn't
really the case.
If there is a difference then it is really very small.

See:

http://www.alblas.demon.nl/wsat/hrv_deter.zip

(contains 2 PGM pics, 16 bits per pixel format, translated 1:1 from raw data)

Rob Alblas





Ulrich G. Kliegis wrote:

On 7 May 2006 at 13:10, James Brown wrote:

Hi Ulrich - there should have been a message reporting that I use PNG.
I also gave a URL which perhaps you also haven't seen which identifies
the problem - probably without the aid of glasses. In case you didn't
see it:

www.meteosat.freeserve.co.uk
Saw your pictures now. The error seems to be much more prominent in
x- than in y-direction, which would be untypical for a jpg-algorithm
induced error. This looks more like a sync error either already at the
data source or somewhere in the postprocessing. The regular pattern
looks like a mechanically induced jitter, but I have no idea of the
satellite's innards. At least, even wen I take off my glasses, being short
sighted, the reason for your question is obvious. Hopefully, the bird is
still under warranty... :)

Regards,
U.

-- -----------------------------------------------------------
Dr.med.Ulrich G. Kliegis
Business: http://www.nordcom.de
Phone (x49) 431 33 11 44 Fax (x49) 431 33 11 46
Don't flame me, I'm only the keyboard player...


Unsure what a term means? Check the Glossary at:
http://www.david-taylor.myby.co.uk/wxsat/glossary.htm


Yahoo! Groups Links



Re: HRV image deterioration

Ulrich G. Kliegis
 

On 7 May 2006 at 13:10, James Brown wrote:

Hi Ulrich - there should have been a message reporting that I use PNG.
I also gave a URL which perhaps you also haven't seen which identifies
the problem - probably without the aid of glasses. In case you didn't
see it:

www.meteosat.freeserve.co.uk
Saw your pictures now. The error seems to be much more prominent in
x- than in y-direction, which would be untypical for a jpg-algorithm
induced error. This looks more like a sync error either already at the
data source or somewhere in the postprocessing. The regular pattern
looks like a mechanically induced jitter, but I have no idea of the
satellite's innards. At least, even wen I take off my glasses, being short
sighted, the reason for your question is obvious. Hopefully, the bird is
still under warranty... :)

Regards,
U.

-- -----------------------------------------------------------
Dr.med.Ulrich G. Kliegis
Business: http://www.nordcom.de
Phone (x49) 431 33 11 44 Fax (x49) 431 33 11 46
Don't flame me, I'm only the keyboard player...


Re: Disc Crash...............

nigel heasman <nigel_heasman@...>
 

--- Geoff Morris <user.group@btinternet.com> wrote:
Hello All

A few days ago I suffered a major disc crash and
general PC woes. To fix this I had to reinstall the
operating system (XP Pro +SP2). All works fine except
AVHRR man (buts that because I did not print out my
reg number !!! and all emails now lost). To get to the
point MSG manager runs on a second PC via network.
Since crash fix, I cannot get into program files,(via
network) Tsystems etc. File share says because program
files used by windows, I can't share.

Any pointers most welcome

Geoff Morris
PS I can see rest of drive via network just not prog
files.
------------------------------------------------
Hi Geoff,
sorry to hear about your disk crash. I am intrigued by
your problem though - are you implying that you used
to be able to share your program files folder?
I have never been able to do that.
I presume you were running XP Pro with SP2 before the
crash?
Have just done Google search and came across this
snippet - does it make sense to you? Maybe that's what
you did previously?
I haven't tried it yet, so cannot say if it does the
job.
-------------------------------
Re: need to share Program Files folder
Run "Server" service!

Run ] services.msc
Look for " Server"
Set to Automatic and press start
----------------------------------
Would be interested to hear how you get on.
Good luck
Nigel


Re: HRV image deterioration

James Brown
 

you did not mention what kind of images you are looking at, jpg or
lossless. Jpg inferes some 'ringing' around contrast-rich image content
(in fact, the ringing is everywhere, you just don't perceive it normally).
The higher the compression ratio, the more visible the ringing. It's
visual impact can also be influenced by the overall spatial frequency
spectrum of the image. The more fine detail (high frequency), the more
response from the algorithm...

Besides that, did your viewing environment change? From new
software to new glasses?
Hi Ulrich - there should have been a message reporting that I use PNG. I also gave a URL which perhaps you also haven't seen which identifies the problem - probably without the aid of glasses. In case you didn't see it:

www.meteosat.freeserve.co.uk

Cheers
James
--
James Brown


Re: HRV image deterioration

James Brown
 

I think James should report his observation to EUMETSAT, as I don't think
the images should be like that. The HRV data is scanned as a band of 9
detectors at once (i.e. 1/9 of the nominal HRV lines are actually
scanned), and the detectors are in a diagonal line. Ground processing
software is supposed to correct the staggered alignment of the detectors,
but perhaps it has a slight error, or a problem at this particular time of
year.
I have done that David a few days ago - but have yet to hear back. I'll keep monitoring.

Your use of zoomed images prompted me to look at how my own software
handles the 2:1 zoom. In both the HRPT Reader and GeoSatSignal 6 the
on-screen display is simply pixel replicated. With GeoSatSignal 6, if you
save a 2:1 zoomed image a "proper" interpolation is done, so the resulting
image will appear smoother and may contain more apparent detail. With the
HRPT Reader you would need to use a program like Paint Shop Pro to
interpolate the 1:1 image to obtain the smoother data. Using a program
like Ground Map for the HRPT data, or the remapping function in
GeoSatSignal 6 should achieve the best results of all.

Cheers,
David
I guess the bottom line is it is better to be able to see pixel for pixel - and hence be aware of any anomalies. Though the question of interpolation is a fascinating subject in itself!

Cheers
James
--
James Brown


Re: HRV image deterioration

James Brown
 

Here are two images from NOAA-14 this year that show a difference on
pixelation due to lighting. The images are of Sardinia, sorry
slightly different pass times but thats all I have.

Image one is 25/3/2006 at 0903utc
http://www.weathersatellite.info/pixelate2.jpg

Image two is 1/5/2006 at 0928utc
http://www.weathersatellite.info/pixelate1.jpg

As you will see the better lit image is much more ragged round the
edges.

Just my theory...please knock holes in it if you like

Cheers....Mike
Thanks Mike - but I think the issue is with the image registration correction.

Cheers
James
--
James Brown