Water masses

There is no comparison with data in this part. It’s only a hydrologic diagnostic from the model’s outputs

It relies on a specific algorithm that define the Water masses in the western basin of mediterreanea.

It has been developped by Barral et al (Assessment of water mass dynamic over the Western Mediterranean in the MEDRYS1V2 reanalysis)

It allow to separate water masses given their hydrology properties (Temperature, Salinity and density)

1. Development of the algorithm

   The algorithm has been adapated from Matlab to python

   • For each time step, the fraction of each water mass is computed from T,S on the whole grid (horizontal and vertical)

   • The transport of both current components is then computed and vertically integrated taking into account the fraction of the water masses

   • The volume of each water mass is also computed at each time step

   • There is at last a file by water mass with the depth-averaged transport along u and v and the volume of the water mass

2. Plots

   To make the plot, the mean annual volume associated with the mean annual transport are plotted for each water mass

   

3. What scripts ?

   • water_masses.ipynb or water_masses.py is the script that compute transport and write a Netcdf file by water mass

   • plot_water_masses.ipynb is the script to do the plots