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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
February 8th 21, 01:40 PM
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Why snow bands/ribbons/striations?
GFS hi-res shows no wind banding over the North Sea, only starting at
the coastline. Some sort of orographic effect? bands coincident with Humber estuary and the Wash but why central Norfolk having one.? -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm |
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#2
February 8th 21, 03:38 PM
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Why snow bands/ribbons/striations?
On 08/02/2021 13:40, N_Cook wrote:
GFS hi-res shows no wind banding over the North Sea, only starting at the coastline. Some sort of orographic effect? bands coincident with Humber estuary and the Wash but why central Norfolk having one.? That wind banding showing at 950,925 and 850HPa but not evident at the higher 700 or 500 levels -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm |
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#3
February 8th 21, 04:30 PM
posted to uk.sci.weather
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Why snow bands/ribbons/striations?
On Monday, February 8, 2021 at 3:38:01 PM UTC, N_Cook wrote:
On 08/02/2021 13:40, N_Cook wrote: GFS hi-res shows no wind banding over the North Sea, only starting at the coastline. Some sort of orographic effect? bands coincident with Humber estuary and the Wash but why central Norfolk having one.? That wind banding showing at 950,925 and 850HPa but not evident at the higher 700 or 500 levels -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm Due to roll vortices along direction of wind. This typical of convection capped by stable air in anticyclonic conditions. Where they happen depends on local topography being suitably heated to destabilise surface air. Len |
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#4
February 8th 21, 04:55 PM
posted to uk.sci.weather
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Why snow bands/ribbons/striations?
On 08/02/2021 16:30, Len wrote:
On Monday, February 8, 2021 at 3:38:01 PM UTC, N_Cook wrote: On 08/02/2021 13:40, N_Cook wrote: GFS hi-res shows no wind banding over the North Sea, only starting at the coastline. Some sort of orographic effect? bands coincident with Humber estuary and the Wash but why central Norfolk having one.? That wind banding showing at 950,925 and 850HPa but not evident at the higher 700 or 500 levels -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm Due to roll vortices along direction of wind. This typical of convection capped by stable air in anticyclonic conditions. Where they happen depends on local topography being suitably heated to destabilise surface air. Len I may be wrong about this, but I believe there are not many mountains in Norfolk, for bora type wind generation. -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm |
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#5
February 8th 21, 07:15 PM
posted to uk.sci.weather
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Why snow bands/ribbons/striations?
On Monday, February 8, 2021 at 4:55:24 PM UTC, N_Cook wrote:
On 08/02/2021 16:30, Len wrote: On Monday, February 8, 2021 at 3:38:01 PM UTC, N_Cook wrote: On 08/02/2021 13:40, N_Cook wrote: GFS hi-res shows no wind banding over the North Sea, only starting at the coastline. Some sort of orographic effect? bands coincident with Humber estuary and the Wash but why central Norfolk having one.? That wind banding showing at 950,925 and 850HPa but not evident at the higher 700 or 500 levels -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm Due to roll vortices along direction of wind. This typical of convection capped by stable air in anticyclonic conditions. Where they happen depends on local topography being suitably heated to destabilise surface air. Len I may be wrong about this, but I believe there are not many mountains in Norfolk, for bora type wind generation. -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm Don't need mountains. Cloud streets are relatively common in the UK. Especially over flat terrain. |
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