2. Parameters

Temperature/Levels » Virtual Temperature (Tv) Skew-T Procedure

Skew-T procedure to determine virtual temperature

At a given pressure level, do the following:

  1. Determine the mixing ratio (w, in g/kg), which is the value of the saturation mixing ratio line passing through the dewpoint (Td), at a given pressure.
  2. The virtual temperature is then computed as follows:
    Tv ~ T + (w / 6)

In this example:
T = 5°C and Td = -6°C.
Thus, w = 3 g/kg.
Tv = T + w/6
     = 5 + 3/6
     = 5.5°C