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    Ogeba

    @Ogeba

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    Latest posts made by Ogeba

    • RE: High air pressure in high mountains areas

      Thank you for your answers !

      Indeed this makes more sense, I was still not very familiar with the Mean Sea Level Pressure concept.

      I found an interesting definition on the US National Weather Service website that mentions these anomalies :

      MEAN SEA LEVEL PRESSURE: This is the pressure reading most commonly used by meteorologists to track weather systems at the surface. Like altimeter setting, it is a "reduced" pressure which uses observed conditions rather than "standard" conditions to remove the effects of elevation from pressure readings. This reduction estimates the pressure that would exist at sea level at a point directly below the station using a temperature profile based on temperatures that actually exist at the station. In practice the temperature used in the reduction is a mean temperature for the preceding twelve hours. Mean sea level pressure should be used with caution at high elevations as temperatures can have a very profound effect on the reduced pressures, sometimes giving rise to fictitious pressure patterns and anomalous mean sea level pressure values.

      posted in General Discussion
      O
      Ogeba
    • High air pressure in high mountains areas

      Hello everyone,

      I have been looking recently at the air pressure map and noticed that during the last few days, some high mountains areas have been displaying relatively high air pressure.

      I am a total amateur so I might be saying something inaccurate, but I thought that air pressure was supposed to get lower when getting at higher altitudes.

      Is there a reason why this occurs ?

      Here are some screenshots for the Himalayas, the Andes and the New Guinea Highlands :

      Press_1.JPG

      Press_2.JPG

      Press_3.JPG

      Looking forward to read your answers.

      O.

      posted in General Discussion
      O
      Ogeba