Codes and dataset for "Perfluoroalkyl substance release in permafrost surface waters is projected to increase under global warming" – XGBoost Modelling of PFAA Exceedance (1 ng/L) and Detection Probability

This is the code for the key modelling of XGBoost using RStudio software. The input csv file has already been preprocessed with binary (0-1) encoding. This file did not include any code for generating visualization figures or bootstrap process. The dataset of PFAA concentrations in the surface waters of the global permafrost regions and the source data used for Figure 4 and 5 are also provided.Please cite our article “Perfluoroalkyl substance release in permafrost surface waters is projected to increase under global warming” when using the original data.