Equivalent Potential Temperature - Formula

Formula

The formula for is the following:

Where:

  • = equivalent temperature
  • = Temperature of air at pressure
  • = pressure at the point (in same units as )
  • = standard reference pressure (1000 mbar or 100 kPa)
  • = specific gas constant for air (287 J/(kg·K))
  • = specific heat of dry air at constant pressure (1004 J/(kg·K))
  • = latent heat of evaporation (2400 kJ/kg {at 25 °C} to 2600 kJ/kg {at −40 °C})
  • = mixing ratio of water vapor mass per mass of dry air (g/Kg or in Kg/Kg.)

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