earthkit.meteo.thermo.array.virtual_potential_temperature
=========================================================

.. py:function:: earthkit.meteo.thermo.array.virtual_potential_temperature(t, q, p)

   Compute the virtual potential temperature from temperature and specific humidity.

   :param t: Temperature (K)
   :type t: :class:`number` or :class:`array-like`
   :param q: Specific humidity (kg/kg)
   :type q: :class:`number` or :class:`array-like`
   :param p: Pressure (Pa)
   :type p: :class:`number` or :class:`array-like`

   :returns: Virtual potential temperature (K)
   :rtype: :class:`number` or :class:`array-like`

   The computation is based on the following formula:

   .. math::

       \Theta_{v} = \theta (1 + \frac{1 - \epsilon}{\epsilon} q)

   where:

       * :math:`\Theta` is the :func:`potential_temperature`
       * :math:`\epsilon = R_{d}/R_{v}` (see :data:`earthkit.meteo.constants.epsilon`).