Date   

Re: Software for EARS-AVHRR Trial Dissemination

Bernard Burton
 

David,
I have downloaded the beta AVHRmanager120 program, for testing. I transferred some NOAA files (BZ2) from the Telecast folder via my network, onto another PC. With the AVHRRmanager installed, setup and running, the NOAA files were duly read, plotted on the map, and the resulting combined file opened in HRPT reader, and seemed to be fully functional, although only the IR channels were available.
I closed the AVHRRmanager, deleted the combined file, and the log, and reinstalled the raw noaa files in the chosen directory. However, when I now run AVHRRmanager, nothing at all happens. All the paths seem to be correct. Should it not be able to process the same set of data again?
Also, if it is feasible I would like to see some information displayed, eg. the date and start/end times of the segment. If possible, I would like these on the map somewhere.

PS. I had my first unexplained outage of the Telecast program two nights ago. It stopped about 0330, and when I first looked at it in the morning, the Telecast icon was red instead of pink. As I say, this is the first outage, and the system has been running continuously since June 2005.
Restarting the PC cured it. Hope the hard drive isn't playing up.

Regards

Bernard Burton
Wokingham, Berkshire, UK.

Satellite images at:
www.btinternet.com/~wokingham.weather/wwp.html

----- Original Message -----
From: David J Taylor
To: GEO-Subscribers@yahoogroups.com ; MSG-1@yahoogroups.com
Sent: Friday, March 10, 2006 8:15 AM
Subject: [MSG-1] Software for EARS-AVHRR Trial Dissemination



Folks,

There is beta software to support this trial available here:

http://www.david-taylor.myby.co.uk/software/AVHRRmanager.htm

As the trial period for the software is time-limited, I would suggest only
installing the software once you are actually receiving data.

Cheers,
David
--


Re: Dust

Alan Sewards <asewards@...>
 

Hi Ken,
I am inclined to agree with you that there is a lot of dust being
blown off into the Southern Atlantic from Africa (The Gambia, Sierra
Leone), at around 11 degrees North latitude. On some image plots it
looks more like low cloud, but in GSS is shows up very clearly as dust,
not least from its movements and the way it matches up with other clouds.

Best regards - Alan

Ken Barker wrote:

Hello All

Today, I set up for a whole earth image highlighting dust.

My interpretation was that there was much dust (sand) being blown west
from Africa into the southern North Atlantic but the amount surprised me
because the (diluted) effect spread over a great area of that ocean.

Also, in the South Atlantic, there was a tongue of dust originating in
Namibia and extending as far as the NE coast of Brazil!

The effect lasted all day and is probably still there.

Can anybody confirm/dispute my findings?

Regards, Ken


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





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Re: BBC-1 Planet Earth.

Peter Green <pete@...>
 

Hi Mads

This program is repeated tomorrow (Saturday) at 1830 on the BBC, I
hope you can catch it then. Next episode Sunday.

Regards

Pete


--- In MSG-1@yahoogroups.com, "Mads Olander Rasmussen" <mor@...>
wrote:

I unfortunately missed the show - but it sounds like something we
can
look forward to seeing in Denmark!

For the ones interested in the Okavango and MSG I recently
finished my
MSc thesis on trying to derive surface/air temperature, global
radiation
and albedo from MSG data for the Okavango delta for use in a
hydrological model - so MSG is certainly more than just
weather :D. If
any of you should be interested my thesis can be found here:
http://www.madsign.dk/speciale/final_thesis.pdf (pdf, 4.8 mb)
I can also provide additional data or information if anyone should
be
interested.

Best
Mads


geojohnt@... 07-03-2006 20:38 >>>
All,

Well, what a remarkable series this is going to be?
Apart from 'the planet' and the 'wildlife' content the photography
was

exceptional - superb technical quality and with close-ups taken
from
afar so the
wildlife was unaware.

The helicopter close-ups were just amazing due to an expensive
piece of
kit
borrowed from the feature film industry - the 'heli-gimbal.'
This allows all the vibration of the helicopter to be negated so
that a
long
lens can be used with the helicopter over a kilometre away from the
subject
providing rock steady close-ups from a non 'interfering' distance.

One sequence that interested me (well they all did) was the
Okavango
Delta
in Africa.
A vast river delta that empties not into the sae but into the
centre of
the
African continent.
The Okavango Delta is one of the many natural features that show
up so
well
on MSG's HRV imaging.
Take a look and watch the changing seasons.

There are so many features on the African continent that show up
clearly in
HRV (and IR).
Have a look during low sun angle times (early morning, late
afternoon)
and
the Sahara rocky outcrops and ranges have an almost 3-D like
quality as
do the
mountains around Cape Town.

Meteosat-8 is more than just weather.

Regards,
John Tellick.




[Non-text portions of this message have been removed]



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


Yahoo! Groups Links


Dust

Ken Barker
 

Hello All

Today, I set up for a whole earth image highlighting dust.

My interpretation was that there was much dust (sand) being blown west from Africa into the southern North Atlantic but the amount surprised me because the (diluted) effect spread over a great area of that ocean.

Also, in the South Atlantic, there was a tongue of dust originating in Namibia and extending as far as the NE coast of Brazil!

The effect lasted all day and is probably still there.

Can anybody confirm/dispute my findings?

Regards, Ken


Total Solar Eclipse March 29th 2006.

geojohnt@...
 

All,

A second eclipse of the Sun in just over 6 months will be visible in Europe
on March 29th.
And the shadow of this total eclipse - the last Oct. 3rd 2005 an annular
eclipse - will again cross Africa and be visible on Meteosat-8's HRV imaging.

The nearest country If you want to see the total eclipse is Turkey where the
shadow central line passes halfway between Antalya and Alanya.
If you haven't witnessed a total eclipse I can assure you it is well making
the journey to see one some time to be part of a quite spiritual, moving and
spectacular event.

Other countries which will enjoy totality are Ghana, Togo, Benin, Nigeria,
Niger, Chad, Libya, Georgia, very S. of Russia and Kazakhstan.

The eclipse starts in north eastern Brazil and the shadow crosses the
Atlantic and enters Africa in Ghana followed by the countries above. So the shadow
should be very visible on the HRV image across Africa, the Mediterranean and
Turkey.

All of Europe will see a partial eclipse though unfortunately SE England
will only see some 29% of the Sun obscured - less further north.
At least we will be able to track and animate the shadow which, considering
the visibility of last Octobers eclipse shadow, which was an annular eclipse,
this months might show up even more on HRV.

For full details of timings, etc. for your own location visit:

_http://umbra.nascom.nasa.gov/eclipse_ (http://umbra.nascom.nasa.gov/eclipse)

_http://sunearth.gsfc.nasa.gov/eclipse_
(http://sunearth.gsfc.nasa.gov/eclipse)

Regards,
John Tellick.
GEO.


Re: some questions and HRV colouring method

R. Alblas
 

Hello, Martin

Here is the link to get coastlines:

http://www.eumetsat.int/idcplg?IdcService=GET_FILE&;dDocName=PDF_TOOLS_COASTLINEFILES&RevisionSelectionMethod=LatestReleased

If you are interested, my Linux program xrit2pic (also available for Windows)
can generate composed pictures immediately from MSG raw data.
It is also able to generate immediately the high resolution colour pictures, as
you described. (And make movies of it, if desired.)
I use a bit different approage; no R-Y and B-Y are generated; I just use HRV for
lum and the channels normally used for a colour pic are converted in such a way
that luminance is removed.
E.g. VIS006 for B, VIS008 for G and IR_016 for R, and HRV for lum.

There will be an article about it in next GEO nr. 10 (unfortunately I was just
too late to get it in number 9). This will also contain the exact formulas used
in xrit2pic.

You can find xrit2pic here:
http://www.alblas.demon.nl/wsat/software/soft_msg.html

(You can also find the link to coastlines here, in case the very long link in
this message was broken...)

High resolution results, compared with normal RGB pictures are here:
http://www.alblas.demon.nl/wsat/weerpl.html

Regards,
Rob.

Quoting Martin Bruchanov <bruxy@regnet.cz>:


Hello all,

I have set up my receiving station for Meteosat 8! After early problem with
registration -- I declared in registration, that I intend to retransmit data
to others. And then I had to intricately explain to my local Czech
Hydrometeorological Institute what excactly intend to do (sometimes to
transmit lowres images by slow-scan TV :) But after extensive email discussion
I get an approval. This was not only problem I had. The second problem
appeared when I was installing a satellite dish. A new LNB was simply damaged,
and before disclosure of it I spent many hours at the roof in severe frost :P

Further I have some questions and comments.

I did not found overline maps on the EUMETSAT web site, should you send me the
direct URL?

My next problem is with extension of my registration. I want to receive
more services. I contacted the EUMETSAT, but I am not clear how the
upgrade of EKU will be done. What is the technical process of it?

My last comment is for colouring of pictures. I was playng with color
combinations of VIS006, VIS008 and IR016 channels. I'm GNU/Linux user so I use
image editor GIMP or utility convert of ImageMagick. For batch making false
RGB combination I wrote simple shell script:

#!/bin/sh
for TIME in `ls | cut -b 21-24 | sort -n | uniq`
do
echo $TIME
convert -negate -combine &#92;
HMSG1_IR_016_*_$TIME-small.jpg &#92;
HMSG1_VIS008_060305_$TIME-small.jpg &#92;
HMSG1_VIS006_060305_$TIME-small.jpg &#92;
JPG:MSG1_RGB-$TIME.jpg
done

The result is quite good, but there is noticeable cyan hue of clouds:

http://bruxy.regnet.cz/ok2mnm/MSG-1/MSG1_RGB-1115_test.jpg

Is there possible way to make clouds white. Or is it not possible due
to offset of red spectral band? Of course, the image pixels is in
10 bits, so there is better dynamics of picture levels, so I will
play more with histogram and levels set and it maybe improve colors.

Last research what I did is about colorizing of HRV channel. I try to describe
what I have "invented". Maybe you know something about human vision. The eye
is more sensitive for luminance then for colors (chrominance). This piece of
knowledge is use in television transmission or in JPEG format and in results
the chrominance component of picture has lower resolution than luminance.

So that I combined false RGB image and decompose it into luminance and
chrominance components. In GIMP you can simply do Filter -> Colors ->
Decompose. I chose YCbCr_ITU_R470 method. It produces three
images: one with luminance and next two with R-Y and B-Y chrominace components.
After it I scaled size (linear interpolation) of R-Y and B-Y for HRV
resolution. Now, the HRV channel forms luminance and colors are added from
lowres image (all three images must be same size in pixels).

There is the result of previous procedure:

* Image detail (600 kB, lossless PNG format):
http://bruxy.regnet.cz/ok2mnm/MSG-1/HMSG1_HRV-RGB_060305_1245_detail2.png

Try to confront with this image produces by GeoSatSignal:
http://www.david-taylor.myby.co.uk/wxsat/images/2005-08-06-1000-Nile-R1G12B9-crop.jpg

* All image (10 MB, 85% JPEG):
http://bruxy.regnet.cz/ok2mnm/MSG-1/HMSG1_HRV-RGB_060305_1245.jpg

Regards

Martin








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


Yahoo! Groups Links







Software for EARS-AVHRR Trial Dissemination

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 14 March 2006, EUMETSAT will commence the trial EARS-AVHRR service
on EUMETCast Europe (Ku-band). Please note that access to these data
is subject to registration and the service is only available to those
users operating a station fitted with a EUMETCast Key Unit (EKU). To
register
for the service, please send an email to ops@eumetsat.int . Following
the successful trial dissemination in March, this service will be made
available to the wider EUMETCast user community in mid-April 2006.
Folks,

There is beta software to support this trial available here:

http://www.david-taylor.myby.co.uk/software/AVHRRmanager.htm

As the trial period for the software is time-limited, I would suggest only installing the software once you are actually receiving data.

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


some questions and HRV colouring method

Martin Bruchanov
 

Hello all,

I have set up my receiving station for Meteosat 8! After early problem with
registration -- I declared in registration, that I intend to retransmit data
to others. And then I had to intricately explain to my local Czech
Hydrometeorological Institute what excactly intend to do (sometimes to
transmit lowres images by slow-scan TV :) But after extensive email discussion
I get an approval. This was not only problem I had. The second problem
appeared when I was installing a satellite dish. A new LNB was simply damaged,
and before disclosure of it I spent many hours at the roof in severe frost :P

Further I have some questions and comments.

I did not found overline maps on the EUMETSAT web site, should you send me the
direct URL?

My next problem is with extension of my registration. I want to receive
more services. I contacted the EUMETSAT, but I am not clear how the
upgrade of EKU will be done. What is the technical process of it?

My last comment is for colouring of pictures. I was playng with color
combinations of VIS006, VIS008 and IR016 channels. I'm GNU/Linux user so I use
image editor GIMP or utility convert of ImageMagick. For batch making false
RGB combination I wrote simple shell script:

#!/bin/sh
for TIME in `ls | cut -b 21-24 | sort -n | uniq`
do
echo $TIME
convert -negate -combine &#92;
HMSG1_IR_016_*_$TIME-small.jpg &#92;
HMSG1_VIS008_060305_$TIME-small.jpg &#92;
HMSG1_VIS006_060305_$TIME-small.jpg &#92;
JPG:MSG1_RGB-$TIME.jpg
done

The result is quite good, but there is noticeable cyan hue of clouds:

http://bruxy.regnet.cz/ok2mnm/MSG-1/MSG1_RGB-1115_test.jpg

Is there possible way to make clouds white. Or is it not possible due
to offset of red spectral band? Of course, the image pixels is in
10 bits, so there is better dynamics of picture levels, so I will
play more with histogram and levels set and it maybe improve colors.

Last research what I did is about colorizing of HRV channel. I try to describe
what I have "invented". Maybe you know something about human vision. The eye
is more sensitive for luminance then for colors (chrominance). This piece of
knowledge is use in television transmission or in JPEG format and in results
the chrominance component of picture has lower resolution than luminance.

So that I combined false RGB image and decompose it into luminance and
chrominance components. In GIMP you can simply do Filter -> Colors ->
Decompose. I chose YCbCr_ITU_R470 method. It produces three
images: one with luminance and next two with R-Y and B-Y chrominace components.
After it I scaled size (linear interpolation) of R-Y and B-Y for HRV
resolution. Now, the HRV channel forms luminance and colors are added from
lowres image (all three images must be same size in pixels).

There is the result of previous procedure:

* Image detail (600 kB, lossless PNG format):
http://bruxy.regnet.cz/ok2mnm/MSG-1/HMSG1_HRV-RGB_060305_1245_detail2.png

Try to confront with this image produces by GeoSatSignal:
http://www.david-taylor.myby.co.uk/wxsat/images/2005-08-06-1000-Nile-R1G12B9-crop.jpg

* All image (10 MB, 85% JPEG):
http://bruxy.regnet.cz/ok2mnm/MSG-1/HMSG1_HRV-RGB_060305_1245.jpg

Regards

Martin


EUMETCast AVHRR trial dissemination announced.

geojohnt@...
 

All,

Please find enclosed notice from EUMETSAT.

Regards,
John Tellick.
GEO.

+++++++++++++++++++++++++

On 14 March 2006, EUMETSAT will commence the trial EARS-AVHRR service
on EUMETCast Europe (Ku-band). Please note that access to these data is
subject to registration and the service is only available to those users
operating a station fitted with a EUMETCast Key Unit (EKU). To register
for the service, please send an email to _ops@eumetsat.int_
(mailto:ops@eumetsat.int) Following
the successful trial dissemination in March, this service will be made
available to the wider EUMETCast user community in mid-April 2006.

The initial service will contain one-minute segments of NOAA-17 and
NOAA-18 satellite data received via the Maspalomas EARS HRPT station.
Data from a further four EARS HRPT stations are planned to be included
in due course. Improvements to the timeliness of data delivery are to
be expected during the course of 2006. It should be noted that this is
a trial service and as such the dissemination may be subject to
modification without notice.

For further information on the EARS-AVHRR service, see the Operational
Service Specification:
_http://www.eumetsat.int/idcplgIdcService=GET_FILE&;dDocName=pdf_ten_010839_ear
s_oss&RevisionSelectionMethod=LatestReleased_
(http://www.eumetsat.int/idcplgIdcService=GET_FILE&;dDocName=pdf_ten_010839_ears_oss&RevisionSelectionMethod=La
testReleased)


+++++++++++++++++++++++++


Image processing with idl

Stefan+Simon Kunz <stefan.kunzloeffel@...>
 

I look for a free library for processing of MSG-1 data with IDL from
RSI. can anybody help?
Thanks - Stefan


Re: BBC-1 Planet Earth.

Mads Olander Rasmussen <mor@...>
 

I unfortunately missed the show - but it sounds like something we can
look forward to seeing in Denmark!

For the ones interested in the Okavango and MSG I recently finished my
MSc thesis on trying to derive surface/air temperature, global radiation
and albedo from MSG data for the Okavango delta for use in a
hydrological model - so MSG is certainly more than just weather :D. If
any of you should be interested my thesis can be found here:
http://www.madsign.dk/speciale/final_thesis.pdf (pdf, 4.8 mb)
I can also provide additional data or information if anyone should be
interested.

Best
Mads


geojohnt@aol.com 07-03-2006 20:38 >>>
All,

Well, what a remarkable series this is going to be?
Apart from 'the planet' and the 'wildlife' content the photography was

exceptional - superb technical quality and with close-ups taken from
afar so the
wildlife was unaware.

The helicopter close-ups were just amazing due to an expensive piece of
kit
borrowed from the feature film industry - the 'heli-gimbal.'
This allows all the vibration of the helicopter to be negated so that a
long
lens can be used with the helicopter over a kilometre away from the
subject
providing rock steady close-ups from a non 'interfering' distance.

One sequence that interested me (well they all did) was the Okavango
Delta
in Africa.
A vast river delta that empties not into the sae but into the centre of
the
African continent.
The Okavango Delta is one of the many natural features that show up so
well
on MSG's HRV imaging.
Take a look and watch the changing seasons.

There are so many features on the African continent that show up
clearly in
HRV (and IR).
Have a look during low sun angle times (early morning, late afternoon)
and
the Sahara rocky outcrops and ranges have an almost 3-D like quality as
do the
mountains around Cape Town.

Meteosat-8 is more than just weather.

Regards,
John Tellick.








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


Yahoo! Groups Links


BBC-1 Planet Earth.

geojohnt@...
 

All,

Well, what a remarkable series this is going to be?
Apart from 'the planet' and the 'wildlife' content the photography was
exceptional - superb technical quality and with close-ups taken from afar so the
wildlife was unaware.

The helicopter close-ups were just amazing due to an expensive piece of kit
borrowed from the feature film industry - the 'heli-gimbal.'
This allows all the vibration of the helicopter to be negated so that a long
lens can be used with the helicopter over a kilometre away from the subject
providing rock steady close-ups from a non 'interfering' distance.

One sequence that interested me (well they all did) was the Okavango Delta
in Africa.
A vast river delta that empties not into the sae but into the centre of the
African continent.
The Okavango Delta is one of the many natural features that show up so well
on MSG's HRV imaging.
Take a look and watch the changing seasons.

There are so many features on the African continent that show up clearly in
HRV (and IR).
Have a look during low sun angle times (early morning, late afternoon) and
the Sahara rocky outcrops and ranges have an almost 3-D like quality as do the
mountains around Cape Town.

Meteosat-8 is more than just weather.

Regards,
John Tellick.


Re: Meteosat Derived Imagery

R. Alblas
 

Paul,

xrit2pic can create composed pics immediately from the raw MSG data (full 10 bits) using any linear
combination of channels, including substraction.
Also, it has a selection button to create immediately the dust, airmass and fog mappings.
The mappings are currently not optimal; e.g. for some mappings gamma correction is needed which is not
implemented yet. This will be added in the future. Also channels are not calibrated yet. But it is a start.
You can also create movies using one of these (or any other) mappings.

xrit2pic is available for WIndows, Linux and SUN/Solaris, for free.
Have a look at:
http://www.alblas.demon.nl/wsat

Regards,
Rob.

Paul Blight wrote:

Paul,

You can automatically download the already-processed Dust, Air-Mass and
Fog images from the EUMETSAT Web site using a program like AutoGet V4.2.0:

http://www.david-taylor.myby.co.uk/software/geosatsignal.htm

or Francis Breame's getCharts Perl script:

http://www.vf0123.btinternet.co.uk/

and combine them into a single full resolution, full-disk image, animate,
or remap them using GeoSatSignal. Unless you have the full 10-bit data
saved, channel subtraction will be approximate at best, so why not let
EUMETSAT do it for you from their master data?

Cheers,
David

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

Hi David

Yes I have considered this - But the only images I can find are hourly ones
- There is nothing more frequent.

There is a lot of "Derived Meteorology" available for Eumetsat Imagery.
(Such as Dust, Fog and Airmass Products)

I feel at present we are only tapping into a small amount of what is
available.

Cheers
Paul


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Re: 3D anaglyph picture/movie

Peter Green <pete@...>
 

Since last summer I played with 3D anaglyphs (pictures) and last weeks
with 3D anaglyph movies. Rob Alblas spent a lot of time to improve his
xrit2pic program.
Have a look at:

http://members.aon.at/gerald_ihninger/

and go to 3D anaglyph to see some samples

regards
Gerald

Gerald
Superb images in 3D, particularly Hurricane Rita it gives it real depth.
Regards,
Pete





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3D anaglyph picture/movie

Ihninger G. <gerald_ihninger@...>
 

Since last summer I played with 3D anaglyphs (pictures) and last weeks
with 3D anaglyph movies. Rob Alblas spent a lot of time to improve his
xrit2pic program.
Have a look at:

http://members.aon.at/gerald_ihninger/

and go to 3D anaglyph to see some samples

regards
Gerald


Re: Meteosat Derived Imagery

weathergroups
 

Paul,

You can automatically download the already-processed Dust, Air-Mass and
Fog images from the EUMETSAT Web site using a program like AutoGet V4.2.0:

http://www.david-taylor.myby.co.uk/software/geosatsignal.htm

or Francis Breame's getCharts Perl script:

http://www.vf0123.btinternet.co.uk/

and combine them into a single full resolution, full-disk image, animate,
or remap them using GeoSatSignal. Unless you have the full 10-bit data
saved, channel subtraction will be approximate at best, so why not let
EUMETSAT do it for you from their master data?

Cheers,
David

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

Hi David

Yes I have considered this - But the only images I can find are hourly ones
- There is nothing more frequent.

There is a lot of "Derived Meteorology" available for Eumetsat Imagery.
(Such as Dust, Fog and Airmass Products)

I feel at present we are only tapping into a small amount of what is
available.


Cheers
Paul




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Re: Meteosat Derived Imagery

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Paul Blight wrote:
Eumetsat have added some interesting derived imagery to their Website
over the last few months
[]
I would like to be able to create such images from my MSG Images
regularly as they are very valuable. However they use Subtraction of
Images.

Geosatsignal does not support this yet and I do not know of any other
image programs that are relatively simple to create such images on a
frequent (15 min) basis

Any guidance / help appreciated


Thanks
Paul
Paul,

You can automatically download the already-processed Dust, Air-Mass and Fog images from the EUMETSAT Web site using a program like AutoGet V4.2.0:

http://www.david-taylor.myby.co.uk/software/geosatsignal.htm

or Francis Breame's getCharts Perl script:

http://www.vf0123.btinternet.co.uk/

and combine them into a single full resolution, full-disk image, animate, or remap them using GeoSatSignal. Unless you have the full 10-bit data saved, channel subtraction will be approximate at best, so why not let EUMETSAT do it for you from their master data?

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



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Re: Meteosat Derived Imagery

Douglas Deans <dsdeans@...>
 

----- Original Message -----
From: "Robert Moore" <rsmoore@liverpool.ac.uk>
To: <MSG-1@yahoogroups.com>
Sent: Sunday, March 05, 2006 12:41 PM
Subject: Re: [MSG-1] Meteosat Derived Imagery


Paul I'm in much the same position as you - I have more or less sorted out
addition and subtraction using PaintShopPro but I never get the images
shown by EUMETSAT. So I have spent a lot of time getting rather muddy
images or images that I can not interpret!
I hope some time we might have a hands-on workshop on this at the GEO
Symposium. I'm sure there's something very straightforward that I'm
missing. I see the explanatory notes show the use of an RGB colour
slider -
I've never got the hang of this either.

So I join your plea for help.

Robert

.......and here is another. I used PhotoFiltre as it had a superb
'Arithmetic' plugin which does the job. But like yourself Robert, the
images were.....er, pretty awful.
Lack of time (yes I know I am retired !) prevented further experimentation.
I have a feeling when reading the MSG Interpretation Guide that Eumetsat do
more to the images than they say....sometimes they use radiance values for
example.
Agreed a very good topic for future discussion and resolve.
David is intending to add a subtraction mode to GSS in the future. Perhaps
his one will do the job better......he hasn't let us down yet !

Regards
Douglas.


Re: Meteosat Derived Imagery

Robert Moore
 

Paul I'm in much the same position as you - I have more or less sorted out addition and subtraction using PaintShopPro but I never get the images shown by EUMETSAT. So I have spent a lot of time getting rather muddy images or images that I can not interpret!
I hope some time we might have a hands-on workshop on this at the GEO Symposium. I'm sure there's something very straightforward that I'm missing. I see the explanatory notes show the use of an RGB colour slider - I've never got the hang of this either.

So I join your plea for help.

Robert





--On 05 March 2006 12:28 +0000 Paul Blight <weathergroups@yahoo.co.uk> wrote:

http://oiswww.eumetsat.int/~idds/doc/airmass_interpretation.pdf



44 (0) 1352 714456


Meteosat Derived Imagery

weathergroups
 

Eumetsat have added some interesting derived imagery to their Website over
the last few months

HYPERLINK "HYPERLINK
http://www.eumetsat.int/idcplg?IdcService=SS_GET_PAGE&;nodeId=504&l=en
http://www.eumetsat.int/idcplg?IdcService=SS_GET_PAGE&;nodeId=504&l=en"
HYPERLINK
http://www.eumetsat.int/idcplg?IdcService=SS_GET_PAGE&;nodeId=504&l=en
http://www.eumetsat.int/idcplg?IdcService=SS_GET_PAGE&;nodeId=504&l=en

In particular the Airmass Visualisation

HYPERLINK "HYPERLINK
http://oiswww.eumetsat.int/~idds/doc/airmass_interpretation.pdf
http://oiswww.eumetsat.int/~idds/doc/airmass_interpretation.pdf"; HYPERLINK
http://oiswww.eumetsat.int/~idds/doc/airmass_interpretation.pdf
http://oiswww.eumetsat.int/~idds/doc/airmass_interpretation.pdf

I would like to be able to create such images from my MSG Images regularly
as they are very valuable. However they use Subtraction of Images.

Geosatsignal does not support this yet and I do not know of any other image
programs that are relatively simple to create such images on a frequent (15
min) basis

Any guidance / help appreciated


Thanks
Paul



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