glidertools.physics.potential_density

glidertools.physics.potential_density(salt_PSU, temp_C, pres_db, lat, lon, pres_ref=0)

Calculate density from glider measurements of salinity and temperature.

The Basestation calculates density from absolute salinity and potential temperature. This function is a wrapper for this functionality, where potential temperature and absolute salinity are calculated first. Note that a reference pressure of 0 is used by default.

Parameters:

• salt_PSU (array, dtype=float, shape=[n, ]) – practical salinty

• temp_C (array, dtype=float, shape=[n, ])

• C (temperature in deg)

• pres_db (array, dtype=float, shape=[n, ]) – pressure in decibar

• lat (array, dtype=float, shape=[n, ]) – latitude in degrees north

• lon (array, dtype=float, shape=[n, ]) – longitude in degrees east

Returns:

potential_density

Return type:

array, dtype=float, shape=[n, ]