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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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#11
May 18th 05, 10:58 PM
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North Pole
JPG wrote:
On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. -- Joe Wolverhampton 175m asl |
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#12
May 18th 05, 10:58 PM
posted to uk.sci.weather
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North Pole
JPG wrote:
On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. -- Joe Wolverhampton 175m asl |
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#13
May 18th 05, 10:58 PM
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North Pole
JPG wrote:
On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. -- Joe Wolverhampton 175m asl |
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#14
May 19th 05, 05:24 PM
posted to uk.sci.weather
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North Pole
"Joe Egginton" wrote in message
... Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? -- Joe Joe, a colleague of mine asked me to reply with the following :- "I don't know about the North Pole, but the US base at the South Pole uses what they call 'grid north' (in their TAFs and METARs, for example). In that system, 'grid north' points along the Greenwich Meridian, ie 0deg longitude, whilst 'grid south' points towards 180degrees. " HTH. Jon. |
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#15
May 19th 05, 05:24 PM
posted to uk.sci.weather
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North Pole
"Joe Egginton" wrote in message
... Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? -- Joe Joe, a colleague of mine asked me to reply with the following :- "I don't know about the North Pole, but the US base at the South Pole uses what they call 'grid north' (in their TAFs and METARs, for example). In that system, 'grid north' points along the Greenwich Meridian, ie 0deg longitude, whilst 'grid south' points towards 180degrees. " HTH. Jon. |
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#16
May 19th 05, 05:24 PM
posted to uk.sci.weather
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North Pole
"Joe Egginton" wrote in message
... Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? -- Joe Joe, a colleague of mine asked me to reply with the following :- "I don't know about the North Pole, but the US base at the South Pole uses what they call 'grid north' (in their TAFs and METARs, for example). In that system, 'grid north' points along the Greenwich Meridian, ie 0deg longitude, whilst 'grid south' points towards 180degrees. " HTH. Jon. |
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#17
May 19th 05, 08:09 PM
posted to uk.sci.weather
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North Pole
Joe Egginton wrote:
JPG wrote: On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. At the North Pole, a northerly wind is defined as that blowing from 180 longitude, easterly from 90E, etc. At the South Pole however, a northerly wind is from 0 degrees. This definition was laid down by WMO for the reporting of surface winds at the Poles and the Met Office abided by this for the coding of all winds in GRIB bulletins. GRIB from Washington used to - and may still - be coded with its winds at the South Pole related to the 180 meridian. Graham |
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#18
May 19th 05, 08:09 PM
posted to uk.sci.weather
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North Pole
Joe Egginton wrote:
JPG wrote: On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. At the North Pole, a northerly wind is defined as that blowing from 180 longitude, easterly from 90E, etc. At the South Pole however, a northerly wind is from 0 degrees. This definition was laid down by WMO for the reporting of surface winds at the Poles and the Met Office abided by this for the coding of all winds in GRIB bulletins. GRIB from Washington used to - and may still - be coded with its winds at the South Pole related to the 180 meridian. Graham |
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#19
May 19th 05, 08:09 PM
posted to uk.sci.weather
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North Pole
Joe Egginton wrote:
JPG wrote: On Wed, 18 May 2005 21:57:05 +0100, Joe Egginton wrote: Hello All, At any other point other than the North or South pole, there are four basic points of the compass N,E,S,W. There are still four points of the compass at the North Pole, so how are the points of the compass described at the North Pole? Within a few degrees of the pole the lines of longitude are used IIRC. Thanks JPG, I was wondering how anyone could describe which direction the wind comes from at the NP. As you cannot say it comes just from the South, because you still have 360° for the wind to come from. At the North Pole, a northerly wind is defined as that blowing from 180 longitude, easterly from 90E, etc. At the South Pole however, a northerly wind is from 0 degrees. This definition was laid down by WMO for the reporting of surface winds at the Poles and the Met Office abided by this for the coding of all winds in GRIB bulletins. GRIB from Washington used to - and may still - be coded with its winds at the South Pole related to the 180 meridian. Graham |
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