EC-Earth 3.3.3.1 Release notes
==============================

EC-Earth 3.3.3.1 is the latest minor release aimed at CMIP6 experiments.
It essentially adds support for several experiments by:

1. being fully compatible with ece2cmor3 1.5 and providing control 
   output files for (#850):

   - RFMIP experiments with the AerChem configuration
   - ScenarioMIP experiments with the CC configuration

2. allowing CH4 and other GHG concentrations in IFS to be fixed to different
   years (#724), as required by histSST-piCH4 and piClim-CH4 AerChemMIP
   experiments.
   **Note** that this feature adds one entry in the `config-run.xml` file.

In addition, this release updates:

- the metadata for ece2cmor3 to include/correct model levels (#849), and
- the platform setup for Marenostrum3 (BSC, #857, #869, #873, #887).