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Slayt 1 - RTC, Regional Training Centre - Turkey

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Hydrostatic or Vertical MomentumEquation The hydrostatic equation preserves stability within the forecastmodel and is used to calculate the height field necessary fordetermining geostrophic balance in the wind forecast equations.This diagnostic equation links the mean temperature in a layer ofthe model to the difference in height between the upper andlower isobaric surfaces serving as the top and bottom of thelayer. Updated temperatures obtained from the temperatureforecast equation are used here to calculate heights, which arethen used in the wind forecast equations.

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