integrate_water_vapor

typhon.physics.integrate_water_vapor(vmr, p, T=None, z=None, axis=0)

Calculate the integrated water vapor (IWV).

The basic implementation of the function assumes the atmosphere to be in hydrostatic equilibrium. The IWV is calculated as follows:

$$\mathrm{IWV}=-\frac{1}{g}\int q(p)\mathrm{d}p$$

For non-hydrostatic atmospheres, additional information on temperature and height are needed:

$$\mathrm{IWV}=\int {\rho }_v(z)\mathrm{d}z$$

Parameters:

• vmr (float or ndarray) – Volume mixing ratio,

• p (float or ndarray) – Pressue [Pa].

• T (float or ndarray) – Temperature [K] (see z).

• z (float or ndarray) – Height [m]. For non-hydrostatic calculation both T and z have to be passed.

• axis (int) – Axis to integrate along.

Returns:

Integrated water vapor [kg/m**2].

Return type:

float