fvcom-debug

Issue Summary

The evaporation variable (water_evaporation_amount) was not properly downloaded from MEPS archives for 2018. The absence of evaporation data caused NaNs in the FVCOM forcing files and then NaNs in the output. The missing evaporation values were set to zero in the forcing dataset.

Files and Scripts

1. Data Checking & Debugging
   check_MEPS_evap.py: Checks for missing values in MEPS datasets via Opendap and verifies evaporation data.
   qc_atm_forcing.py: Quality check on atmospheric forcing variables, generates plots.
2. Fixing the Evaporation Issue
   fix_evaporation.py: Overwrites missing evaporation with zero (0) in the atmospheric forcing.
3. Preprocessing & Model Setup
   convert_to_node.py: Converts locations in rivers NML file from edges to nodes format.
   add_fabm_river.ipynb: Notebooks related to adding river (pipe) input to NML and also add FABM tracer to river files, nesting and restart.
4. Simulation Output & Validation
   qc_output.py: Analyzes FVCOM simulation output, generates plots.

Fix Implementation

1. Check MEPS Data
   Use check_MEPS_evap.py to verify evaporation. water_evaporation_amount was available, but effie didn't download it.
2. Modify Forcing Data
   Use fix_evaporation.py to replace evaporation values with 0 in adamselv_forcing_evap0.nc.
3. Validate Fixes
   qc_atm_forcing.py to confirm no missing variables. Check simulation results using qc_output.py.

Future Improvements

• Fix Effie downloading evaporation (already tried to add base_names to try to download from THREDDS, but it didn't help).
• Improve Effie handling of missing variables