Source Specific Water Age

Hi Kester, I hope this message finds you well.

I am currently working on an application that requires estimating water age specific to individual inflow sources (e.g., river discharges, tidal inlets) within the EEMS framework. I understand that the built-in AgeTracer module provides the bulk average water age at each location, regardless of origin.

However, for my use case, I would like to extract the average age of water originating from each source independently.

I would like to ask:

  1. Does the current EEMS post-processing environment support calculating source-specific water age, assuming I define unit passive tracers and corresponding age-integrated tracers for each source?
  2. If not directly supported in the post-processing tools, is there any recommended workflow or utility within EEMS to assist with this kind of analysis?
  • For example, is there a feature to compute Age × Concentration / Concentration directly across tracer fields?
  • Are there any built-in masking, thresholding, or formula-evaluation tools in the GUI?

Any documentation, examples, or suggestions you can provide would be greatly appreciated. I am currently exploring external post-processing (e.g., in MATLAB or Python), but I would prefer to use built-in EEMS tools if possible.

Thank you for your continued support and for providing such a powerful modeling platform.

Hi @feleke

Is this what you’re looking for?
https://eemodelingsystem.atlassian.net/wiki/spaces/EHG/pages/226165216/Age+of+Water+Tutorial