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| Mathinline |
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\epsilon = \frac{R_{dry}}{R_{vapour}} = 0.621981 |
number virtual_temperature(t: number, q: number) vector virtual_temperature(t: vector, q: vector) fieldset virtual_temperature(t: fieldset, q: fieldset)
New in Metview version 5.13.0.
Computes the virtual temperature from the given temperature and specific humidity:
- temperature (K)
- q: specific humidity (kg/kg)
The result is the virtual temperature in K units. On error nil is returned. When the result is a fieldset the ecCodes paramId in the output is set to 300012 (=virtual temperature). The computation is based on the following formula:
| Mathinline |
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T_{v} = T (1 + \frac{1 - \epsilon}{\epsilon} q) |
where
- T is the temperature
- q is the specific humidity
- ε = 0.621981