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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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The sat. image below received at Plymouth Uni shows North Sea cloud
evaporating completely near NE England coast, and silhouetting the East Anglian coast in partial dispersion. Is this only a sea surface temperature phenomenon or could the onshore winds be gradually affected by the changing synoptics which are bringing southerlies and southwestelies aloft? http://www4.plymouth.ac.uk/metnet/sa...T%20sample.jpg Len Wembury, SW Devon |
#2
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"Len Wood" wrote in message
... The sat. image below received at Plymouth Uni shows North Sea cloud evaporating completely near NE England coast, and silhouetting the East Anglian coast in partial dispersion. Is this only a sea surface temperature phenomenon or could the onshore winds be gradually affected by the changing synoptics which are bringing southerlies and southwestelies aloft? http://www4.plymouth.ac.uk/metnet/sa...T%20sample.jpg Len Wembury, SW Devon Yes Len, an interesting effect. Looking at the visible channel replay from RSS (5 minute scans), it looks very much like a sea breeze circulation developed, but possibly enhanced during the late afternoon by an increasing SW'ly component at cloud level. It is an interesting example where the sub Sc level air is unstable enough to allow convection inland to develop from the diffuse radiational heating getting through the Sc layer. Individual Sc elements can be seen on the imagery accelerating away from the coast over the sea and dispersing there, while inland the Sc tops are moving slowly, mostly, I suspect, spreading out from the convection below. The perfect fit between the shape of the coast of E Anglia and the edge of the dispersing Sc attests to the sea-breeze subsidence in action. -- Bernard Burton Wokingham Berkshire. Weather data and satellite images at: http://www.woksat.info/wwp.html |
#3
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On Jun 10, 10:41*pm, "Bernard Burton"
wrote: "Len Wood" wrote in message ... The sat. image below received at Plymouth Uni shows North Sea cloud evaporating completely near NE England coast, and silhouetting the East Anglian coast in partial dispersion. Is this only a sea surface temperature phenomenon or could the onshore winds *be gradually affected by the changing synoptics which are bringing southerlies and southwestelies aloft? http://www4.plymouth.ac.uk/metnet/sa...T%20sample.jpg Len Wembury, SW Devon Yes Len, an interesting effect. Looking at the visible channel replay from RSS (5 minute scans), it looks very much like a sea breeze circulation developed, but possibly enhanced during the late afternoon by an increasing SW'ly component at cloud level. It is an interesting example where the sub Sc level air is unstable enough to allow convection inland to develop from the diffuse radiational heating getting through the Sc layer. Individual Sc elements can be seen on the imagery accelerating away from the coast over the sea and dispersing there, while inland the Sc tops are moving slowly, mostly, I suspect, spreading out from the convection below. The perfect fit between the shape of the coast of E Anglia and the edge of the dispersing Sc attests to the sea-breeze subsidence in action. -- Bernard Burton Wokingham Berkshire. Weather data and satellite images at:http://www.woksat.info/wwp.html Thanks Bernard. Having 5 min scans was handy for giving an explanation. It was hard to see at first a sea breeze circulation setup with so must cloud over the land but as you correctly point out, it was not so thick as to prevent some solar warming at the surface. Len Wembury |
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