Ice Sheet Simulation compliance checker

The script checks the compliance of a simulation dataset according criteria, which are related to:

• naming conventions
• admissible numerical values,
• spatial definition of the grid which differs according to the ice sheet (AIS vs GIS),
• time recording dependent of the experiments.

The compliance criteria of output variables are defined in a separate csv file. The compliance criteria of experiments are directly defined as a dictionnary in the python file.

=> For ISMIP6 simulations, the criteria are following the conventions defined in the ISMIP6 wiki. The associated csv file is ismip6_criteria.csv

=> ISMIP6 2300 file name convention: check carrefully the section A2.1 File name convention of the ISMIP6 2300 wiki

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Python and dependencies

The code has been developed with python 3.9 and the following modules:

• os
• xarray
• cftime
• numpy
• pandas
• datetime
• tqdm

=> Conda users can install the isscheck environnment with the YML file isschecker_env.yml.

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Test the code

1. Conda users: activate the isschecker environnement: > conda activate isschecker. For others, be sure that the dependencies specified in the YML file [isschecker_env.yml] (https://github.com/jbbarre/ISM_SimulationChecker/blob/main/isschecker_env.yml) are installed.

2. In a terminal, run the script: > python compliance_checker.py. A progression bar appears in the terminal and shows the progression.

3. Without any changes, the script checks the test directory, which contains a single file. After processing the check, open the compliance_checker_log.txt file created in the test directory. The compliance checker raises errors because the test data is just a short extraction of a complete dataset.

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How to launch a compliance check ?

1. In compliance_checker.py, specify the path of the directory to check by changing the value of the variable source_path and change the experiments tested from experiments = experiments_ismip6 to experiments = experiments_ismip6_ext to test the new 2300 extensions. The compliance criteria csv file (ismip6_criteria.csv) must be located in the same directory as compliance_checker.py .

2. In a terminal, run the script: > python compliance_checker.py.

3. The script creates a compliance_checker_log.txt file in the source_path, which reports the errors and warnings.