Data associated with manuscript entitled as "Reassessing Alpine Permafrost Thermal State by Accounting for Ground Ice"

In the manuscript "Reassessing Alpine Permafrost Thermal State by Accounting for Ground Ice" (submitted to Earth's Future), we proposed an enthalpy change-based metric (ΔH′) as a new indicator for quantifying permafrost thermal state (thermal stability). Through numerical experiments, we demonstrated that ΔH′ provides a more uniform scale and greater discriminative power for indicating potential permafrost persistence. Based on this metric, we produced a new map of permafrost thermal stability across the Qinghai–Tibet Plateau (QTP).This repository provides the original dataset, source code, and supporting materials used to reproduce the enthalpy change-based permafrost thermal state shown in Figure 3a of the manuscript.Filesreplot_enthalpy.tif Raster of the enthalpy change-based permafrost thermal state (Figure 3a). Spatial resolution: 0.008333333° × 0.008333333° replot_enthalpy_colorscheme.lyrx ArcGIS layer file containing the color scheme used in Figure 3a. It can be imported directly into ArcGIS to reproduce the original visualization. QTP_Boundary.zip Boundary of the Qinghai–Tibet Plateau (polygon shapefile). CN_MountainRanges_QTP.zip Major mountain ranges of the Qinghai–Tibet Plateau (polyline shapefile). code_reproduce_new_map.R R script for reproducing Figure 3a. The required input file is sta_magt_ran2022_ice_zou2024.txt. sta_magt_ran2022_ice_zou2024.txt Gridded Mean Annual Ground Temperature (MAGT) and ground ice content data organized in tabular format for processing by the R script.Data structure: Lon Lat MAGT VWC23 VWC35 VWC510L1L2 . where:Lon, Lat: Longitude and latitude of the center of each 0.008333333° × 0.008333333° grid cell.MAGT: Mean Annual Ground Temperature (°C).VWC23: Volumetric ground ice content at depths of 2–3 m.VWC35: Volumetric ground ice content at depths of 3–5 m.VWC510: Volumetric ground ice content at depths of 5–10 m.Note that MAGT sourced from https://doi.org/10.11888/Geocry.tpdc.271190, while ground ice content sourced from https://doi.org/10.11888/Cryos.tpdc.300748