This file is to provide information for the manuscript **Similar carbon cycle feedback between enhancing terrestrial and marine carbon sink and among CMIP6 models** submitted to Environmental Research Letters by Wey et al.

LUMIP and CDRMIP data for ACCESS-ESM1-5, CESM2, CanESM5, MIROC-ES2L, UKESM1-0-LL, NorESM2-LM are available from the Earth System Grid Federation (ESGF). 

FOCI and MPI-ESM data can be reproduced with the information provided in this file.

### File structure
* `model/`: scripts to reproduce the experiments 
    * `FOCI/`
        * `run/`: .config files that can be used to produce run scripts
        * `experiments/`: run scripts for restarting and starting experiments
    * `MPI-ESM/`
        * `run/`: .config files that can be used to produce run scripts
        * `experiments/`: run scripts for restarting and starting experiments
* `data_processing/`: scripts used to process model output for further analysis and producing figures
    * `convert_grib_to_nc.sh`
        * for FOCI
        * for converting from grib output to netcdf files
    * `T63_to_csv.py`
        * for FOCI (atmosphere and land outputs)
        * calculate global values and save to csv
    * `variability_comparison.ipynb`
        * Comparison of inter-model and internal variability
    * `nemo_fgco2_to_csv.py`
        * for FOCI
        * calculate global values of fgco2 and save to csv
    * `FOCI_co2_to_csv.py`
        * for FOCI
        * calculate atmospheric CO2 concentration and save to csv
    * `cmorized_to_csv.py`
        * for cmorized data
        * calculate global values and save to csv
    * `alkalinity_to_csv.ipynb`
        * calculate global top 100-m alkalinity and save to csv
    * `treeArea_to_csv.ipynb`
        * calculate global forest area and save to csv
* `data/`: processed data
    * `csv/`: csv files containing time series of global values. Used for producing Figs. 1, 2, and 3.
        * `tree`: global sum of forest area
        * `temp2` of FOCI and MPI-ESM equals the cmorized variable `tas`, which is the near-surface atmospheric temperature, ideally at 2 meter.
        * units: cLand [PgC]; nbp [PgC/yr]; fgco2 [PgC/yr]; co2_concentration [ppm]; tree [Mha]; temp2, tas [degC]
    * `nc/`: netcdf files containing selected output from MPI-ESM. 
        * `MPIESM_AFF_ens_atm_grid.nc` and `MPIESM_AFF_ens_ocean_grid.nc`: Difference between A/R and REF at atmosphere/land and ocean grid. Averaged from 2040 to 2060. Used for producing Fig. 4
        * `MPIESM_OAE_ens_atm_grid.nc` and `MPIESM_OAE_ens_ocean_grid.nc`: Difference between OAE and REF at atmosphere/land and ocean grid. Averaged from 2040 to 2060. Used for producing Fig. 4
* `figures/`: scripts used to produce the figures in the manuscript
    * `my_io.py`
    * `fig1_all_models.ipynb`
    * `fig2_compare_uncertainty.ipynb`
    * `fig3_feedback_ratio.ipynb`
    * `fig4_spatial_pattern_general.ipynb`

### MPI-ESM
In total, ten simulation of MPI-ESM were used. Five of which are available from ESGF, and five of which were conducted for this study.
* REF for OAE
    * `essp585_0003`, `essp585_0004`, and `essp585_0005`
    * The data was accessed via levante before cmorization. After cmorization, the numbering of the experiments is r4, r5, and r6 and can be accessed from ESGF.
* OAE
    * `esm-ssp585-ocn-alk_EXP1`, `esm-ssp585-ocn-alk_EXP2`, and `esm-ssp585-ocn-alk_EXP3`
    * All three simulations were run for this study by Yiannis Moustakis (yiannis.moustakis@geographie.uni-muenchen.de).
* REF for AFF
    * `essp585_0004`, `essp585_0005`, and `esm-ssp585`
    * `essp585_0004`, `essp585_0005` were accessed via levante before cmorization. After cmorization, the numbering of the experiments is r5, and r6 and can be accessed from ESGF.
    * `esm-ssp585` was downloaded from ESGF.
* AFF
    * `ymo_esm_ssp585_ssp126Lu_2`, `ymo_esm_ssp585_ssp126Lu_3`, and `esm-ssp585-ssp126Lu`
    * `ymo_esm_ssp585_ssp126Lu_2` and `ymo_esm_ssp585_ssp126Lu_3` were conducted for this study by Yiannis Moustakis (yiannis.moustakis@geographie.uni-muenchen.de).
    * `esm-ssp585-ssp126Lu` was downloaded from ESGF.


### FOCI
In total, nine simulations of FOCI were used. three of which were conducted and documented in Chien et al. (2022), and six of which were conducted for this study. Here are the internal experiment IDs used in the scripts:
* REF (*esm-ssp585*)
    * CC104, CC105, CC106
* OAE (*esm_ssp585_ocn_alk*)
    * HW002, HW005, HW006
* AR (*esm_ssp585_ssp126Lu*)
    * HW003, HW007, HW008


Chien, C.-T., Durgadoo, J. V., Ehlert, D., Frenger, I., Keller, D. P., Koeve, W., et al. (2022). FOCI-MOPS v1 – integration of marine biogeochemistry within the Flexible Ocean and Climate Infrastructure version 1 (FOCI 1) Earth system model. Geoscientific Model Development, 15(15), 5987–6024. https://doi.org/10.5194/gmd-15-5987-2022