This repository provides code for reproducing figures of the manuscript
# *Skiba, V., Jouvet, G., Spötl, C., Marwan, N., and Fohlmeister, J. 2023. Speleothem growth and stable carbon isotopes as proxies of the presence and thermodynamical state of glaciers compared to modelled glacier evolution in the Alps.*

All the provided code and instructions have been produced by Vanessa Skiba at Potsdam Institute for Climate Impact Research (2020-2023).

# Description
_______________

This executable script can be run independently.
It was implemented in Python 3.7.
To ensure that potential errors are trackable, the script should be executed more or less linewise (or 'chunkwise').
The different analysis steps are commented.

This code is used to compare speleothem data with previously published glacier evolution model results (Seguinot et al., 2018; Jouvet et al., 2023) using the Parallel Ice Sheet Model (PISM, Bueler and Brown, 2009, Winkelmann et al., 2011, https://www.pism.io/) 

Most speleothem data is publicly available and should be extracted from the SISALv2 database (Atsawawaranunt et al., 2018, Comas-Bru et al., 2020, https://researchdata.reading.ac.uk/256/). Previously unpublished data obtained from stalagite M6_1_57 from Schratten cave, Melchsee-Frutt cave system, Switzerland, can be found in the Supplementary material of the corresponding publication. For all other speleothem data please contact Christoph Spötl from the University of Innsbruck: christoph.spoetl@uibk.ac.at

Alpine Ice Field simulation results are available on zenodo (https://zenodo.org/record/1423176 for Seguinot et al., 2018, and https://zenodo.org/records/8270674 for Jouvet et al., 2023). The simulations should be downloaded and placed in the working directory.



# Required modules
_______________

* matplotlib (V3.1.1)
* numpy (V1.23.3)
* pandas (V1.4.4)
* math (V2022.1.0)
* PySimpleGUI (V4.60.4)
* xarray (V2023.2.0)
* netcdf4 (V1.6.2)
* scipy (V1.9.1)
* cartopy (V0.21.1)
* pyproj (V3.4.1)
* hyoga (V0.3.0)
* seaborn (V0.12.2)

# License
_______________

Copyright (C) 2023  Vanessa Skiba

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

_________________________