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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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This was taken about 11.25Z today and shows largely clear skies. The
remaining cloud was still evaporating. I've brightened it quite a bit to show the different colours of the land and nearby shallow seas. http://www.mtullett.plus.com/satelli...07-09-2004.jpg It is about 600KB in size - ~2 minutes on a 56k modem The light colours in the east intrigue me. Would I be correct in assuming this was the result of light coloured crops (cereals) rather than a sign of dry soil? "Image courtesy of MODIS Rapid Response Project at NASA/GSFC" -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 07/09/2004 18:54:22 UTC |
#2
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On Tue, 7 Sep 2004 19:54:22 +0100, Mike Tullett wrote:
This was taken about 11.25Z today and shows largely clear skies. Lovely image Mike, what resolution is that one? It prompted me to go a drag down the full 250m/pixel version (7.2Meg). -- Cheers Dave. pam is missing e-mail |
#3
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On Tue, 07 Sep 2004 22:14:54 +0100 (BST), Dave Liquorice wrote in
ill.com This was taken about 11.25Z today and shows largely clear skies. Lovely image Mike, what resolution is that one? It prompted me to go a drag down the full 250m/pixel version (7.2Meg). That was the 500m resolution, Dave - the full uncropped image was about 1.5 MB. -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 07/09/2004 21:41:19 UTC |
#4
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![]() "Mike Tullett" wrote in message ... This was taken about 11.25Z today and shows largely clear skies. The remaining cloud was still evaporating. I've brightened it quite a bit to show the different colours of the land and nearby shallow seas. http://www.mtullett.plus.com/satelli...07-09-2004.jpg It is about 600KB in size - ~2 minutes on a 56k modem The light colours in the east intrigue me. Would I be correct in assuming this was the result of light coloured crops (cereals) rather than a sign of dry soil? I'm curious too about the red splotches west of the Humber. Anyone got any ideas? -- Rob Overfield Hull; 3m ASL http://www.astrosport02.karoo.net/YorkshireWeather/ |
#5
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On Tue, 7 Sep 2004 22:54:06 +0100, Rob Overfield wrote in
http://www.mtullett.plus.com/satelli...07-09-2004.jpg It is about 600KB in size - ~2 minutes on a 56k modem The light colours in the east intrigue me. Would I be correct in assuming this was the result of light coloured crops (cereals) rather than a sign of dry soil? I'm curious too about the red splotches west of the Humber. Anyone got any ideas? Hi Rob - they are meant to represent a hot spot and have been added artificially. Here is what the website says: "The red boxes indicate the location of a thermal anomaly that was detected by MODIS using data from the middle infrared and thermal infrared bands. In most cases, this thermal anomaly is a fire, but sometimes it is a volcanic eruption, or even the flare from a gas well. We have no way of knowing which it is based on the MODIS data alone. In areas of known volcanic activity, we can verify an eruption using published reports of volcanic activity worldwide. The red outlines don't represent the actual size of the fire. They indicate the perimeter of 1km-resolution pixels containing the thermal anomaly detected by MODIS" From http://rapidfire.sci.gsfc.nasa.gov/faq/faq.cgi#02 -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 07/09/2004 22:09:44 UTC |
#6
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![]() "Mike Tullett" wrote in message ... On Tue, 7 Sep 2004 22:54:06 +0100, Rob Overfield wrote in http://www.mtullett.plus.com/satelli...07-09-2004.jpg It is about 600KB in size - ~2 minutes on a 56k modem The light colours in the east intrigue me. Would I be correct in assuming this was the result of light coloured crops (cereals) rather than a sign of dry soil? I'm curious too about the red splotches west of the Humber. Anyone got any ideas? Hi Rob - they are meant to represent a hot spot and have been added artificially. Here is what the website says: "The red boxes indicate the location of a thermal anomaly that was detected by MODIS using data from the middle infrared and thermal infrared bands. In most cases, this thermal anomaly is a fire, but sometimes it is a volcanic eruption, or even the flare from a gas well. We have no way of knowing which it is based on the MODIS data alone. In areas of known volcanic activity, we can verify an eruption using published reports of volcanic activity worldwide. The red outlines don't represent the actual size of the fire. They indicate the perimeter of 1km-resolution pixels containing the thermal anomaly detected by MODIS" In the case of the ones by the humber, they could be fires then cos I can't see it being volcanic, and I'm not aware of any gas flares there. Hmmm, thanks Mike, much appreciated. -- Rob Overfield Hull; 3m ASL http://www.astrosport02.karoo.net/YorkshireWeather/ |
#7
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![]() "Mike Tullett" wrote in message The light colours in the east intrigue me. Would I be correct in assuming this was the result of light coloured crops (cereals) rather than a sign of dry soil? The are still a few fields in East Anglia with standing wheat, but the brown colour is probably mainly due to newly ploughed soil ready for drilling (or has just been drilled with next years crop) MODIS images are superb, but can anyone offer some tips how to find the right image quickly from such an enormous chaotic data base? Yes I know about MODIS and AQUA tracks, etc, but even with broadband, it takes quite a bit of searching. Jack |
#8
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![]() "Jack Harrison" wrote in message ... MODIS images are superb, but can anyone offer some tips how to find the right image quickly from such an enormous chaotic data base? Yes I know about MODIS and AQUA tracks, etc, but even with broadband, it takes quite a bit of searching. I was also going to ask, how often, i.e is it every other day ?, can you get the UK image like Mike has today. When Ive gone to the site in the past, to look at the UK, it appears squashed up at an angle in one of the images and not worth expanding. Phil |
#9
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On Wed, 8 Sep 2004 06:10:58 +0100, Phil Layton wrote in
"Jack Harrison" wrote in message ... MODIS images are superb, but can anyone offer some tips how to find the right image quickly from such an enormous chaotic data base? Yes I know about MODIS and AQUA tracks, etc, but even with broadband, it takes quite a bit of searching. I don't think there is a quick way. That morning pass by TERRA is around the same time each day and the same with the lunchtime AQUA pass. On the Terra images I look for NW Africa in the thumbnails and then move two up from that one. I was also going to ask, how often, i.e is it every other day ?, can you get the UK image like Mike has today. When Ive gone to the site in the past, to look at the UK, it appears squashed up at an angle in one of the images and not worth expanding. It is quite rare for the British Isles to be in the middle of the pass as it was in this one. Usually we are chopped in half, or at the edge of the image with all the associated distortions. It just so happened the pass was perfect yesterday as well as at a time of clear skies. -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 08/09/2004 06:39:00 UTC |
#10
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On Wed, 8 Sep 2004 07:39:00 +0100, Mike Tullett wrote in
I was also going to ask, how often, i.e is it every other day ?, can you get the UK image like Mike has today. When Ive gone to the site in the past, to look at the UK, it appears squashed up at an angle in one of the images and not worth expanding. It is quite rare for the British Isles to be in the middle of the pass as it was in this one. Usually we are chopped in half, or at the edge of the image with all the associated distortions. It just so happened the pass was perfect yesterday as well as at a time of clear skies. I've now put up the 13.10Z Aqua image. The pass was from a different direction but we are very close to the middle in an east-west sense. http://www.mtullett.plus.com/satelli...07-09-2004.jpg -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 08/09/2004 07:40:30 UTC |
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