Data and Code corresponding to the manuscript "Interpreting Air Temperature Trends Across the Antarctic Peninsula Between 1979-2025"

This repository provides all data and code used for the manuscript "Intepreting Air Temperature Trends Across the Antarctic Peninsula Between 1979-2025". analysis_and_figures.ipynb -> notebook that contains all code to create the figures in the manuscript using the data in this repository figures -> contains all figures from the manuscript which can be ceated using the "analysis_and_figures.ipynb" notebook geo_data -> contains the following shapefiles: add_coastline_high_res_line_v7_12.shp -> high resolution vector polylines of the Antarctic coastline from the SCAR Antarctic Digital Database (Gerrish et al., 2026) add_sea_mask_medium_res_v7_12.shp -> medium resolution vector polygon seamask for areas south of 60 deg South from the SCAR Antarctic Digital Database (Ireland, 2026) AntAWS shp -> locations of AntAWS (Wang et al. 2022) MEaSUREs -> shapefiles of the basin and iceshelf boundaries from the MEaSUREs dataset (Mouginot et al., 2017) obs_data -> Contains all observational data used for analysis: BAS_READER -> Contains the air temperature data from the six READER stations used for analysis (Collwell, 2013) ERA5_monthly_T.nc -> monthly 2 m temperature from ERA-5 reanalysis for the Antarctic Peninsula between 1979-2025, retrieved from the Climate Data Store (Copernicus Climate Change Service, 2023) IMAU_AWS_T_monthly.csv -> contains monthly 2m temperature from the four AWS's discussed in the manuscript between 2009-2025, a description of these data can be found in van Tiggelen et al. (2025) The AntAWS dataset -> contains the daily 2m temperature from the Ant AWS dataset (Wang et al., 2022) Plotting_examples.ipynb -> notebook that contains examples to analyse and plot RACMO data RACMO_data -> contains all RACMO fields used for the analysis: siconca_monthlyA_XPEN055_RACMO2.4p1_v5_historical_197901_202512.nc -> sea-ice concentration monthly averaged between January 1979 and December 2025 tas_antAws_1979_2025.DD.nc -> daily averaged 2m temperature at the Ant-AWS locations tas_dailyA_XPEN055_RACMO2.4p1_v5_historical_19790101_20251231.nc -> 2m air temperature daily averaged between January 1st 1979 and December 31st 2025 tas_monthlyA_XPEN055_RACMO2.4p1_v5_historical_197901_202512.nc -> 2m air temperature monthly averaged between January 1979 and December 2025 XPEN055_RACMO2.4p1_v5_historical_ice_mask.nc -> RACMO ice mask XPEN055_RACMO2.4p1_v5_historical_terrain.nc -> RACMO terrain References: Colwell, S. (2013). Surface meteorology at british antarctic survey stations, 1947-2013 (version ”1.0”) [data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council. doi: https://doi.org/10.5285/569d53fb-9b90-47a6-b3ca-26306e696706 Copernicus Climate Change Service. (2023). Era5 monthly averaged data on single levels from 1940 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). doi: 10.24381/cds.f17050d7 Gerrish, L., Ireland, L., Fretwell, P., Cooper, P., & Skachkova, A. (2026). High resolution vector polylines of the antarctic coastline (version 7.12) [data set]. NERC EDS UK Polar Data Center. doi: https://doi.org/10.5285/37437ad06ff-888d-452c-be85-018e59600103 Ireland, L. (2026). Medium resolution vector polygon seamask for areas south of 60s (version 7.12) [data set]. NERC EDS UK Polar Data Center. doi: https://doi.org/10.5285/dbaf29f5-c8dc-4e79-aeb1-1df316e951ec Mouginot, J., Scheuchl, N., & Rignot, E. (2017). Measures antarctic boundaries for ipy 2007-2009 from satellite radar. (nsidc-0709, version 2). NASA National Snow and Ice Data Center Distributed Active Archive Center. Retrieved from https://doi.org/10.5067/AXE4121732AD van Tiggelen, M., Smeets, P. C., Reijmer, C. H., Munneke, P. K., & van den Broeke, M. R. (2025a). Imau antarctic automatic weather station data, including surface radiation balance (aws13, pole of inaccessibility). PANGAEA. Re-trieved from https://doi.org/10.1594/PANGAEA.974122 Wang, Y., Zhang, X., Ning, W., Lazzara, M. A., Ding, M., Reijmer, C. H., . . .Hou, S. (2022). Antaws dataset: A compilation of antarctic automatic weather station observations. version 1.0. AMRDC Data Repository. doi: https://doi.org/10.48567/key7-ch19