Water masses of the future
Water masses have historically been defined using certain potential temperature and salinity bounds for each given one. In view of projected changes in heat content and freshwater fluxes, will the bounds defined in the mid-20th century still hold?
Other approaches, based on geometric consideration (see Juza et al. https://www.sciencedirect.com/science/article/pii/S0924796318302173), have been proposed. The goal here is to investigate if significant water mass properties changes are found between late 20th versus late 21th centuries) using T/S diagrams, as well as changes in water masses total volume. And if a significant change in temperature is detected, estimate the heat content change in some water masses of interest. There is room for discussion about what criterion can/should be used for water mass description.
Participants can focus on one (or more) water mass of particular interest to him/her.
Building T/S diagrams for multiple CMIP ocean models and compare 20th and 21th centuries, detect potential changes.
Compute water mass volume evolution (traditional criterion and maybe new one(s))
Estimate changes in heat content.
Anticipated Data Needs
CMIP (5/6) potential temperature and salinity
Anticipated Software Tools
- pangeo software stack (xarray/dask)
- computation of water mass volume and heat content is a 3 for loop, 4 if statements that can be optimized for performance with f2py or numba.
Beginner/Intermediate python users are welcome, basic knowledge of observational oceanography (can read T/S diagram).