polaris.ocean.vertical.ztilde.pressure_from_z_tilde

polaris.ocean.vertical.ztilde.pressure_from_z_tilde(z_tilde: DataArray) → DataArray

Convert pseudo-height to sea gauge pressure.

p = -z_tilde * (RhoSw * g)

Pressure here is gauge pressure (relative to the atmosphere), which is zero at the free surface (z_tilde = 0) and positive downward.

Parameters:

z_tilde (xarray.DataArray) – Pseudo-height in meters (m), positive upward.

Returns:

xarray.DataArray – Sea gauge pressure with the same shape and coords as z_tilde (Pa).