DOI: 10.6084/m9.figshare.28721504
title: Data asssociated with manuscript entitled as "Constrained simulation of permafrost thermal changes from 1980 to 2018 on the Qinghai-Tibet Plateau"

description: Constrained simulation of permafrost thermal changes from 1980 to 2018 on the Qinghai-Tibet PlateauHailong Ji1, Zhuotong Nan1,2*, Xiaobo Wu31 Key Laboratory of Ministry of Education on Virtual Geographic Environment, Nanjing Normal University, Nanjing, 210023, China2 Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China3 College of Resources, Sichuan Agricultural University, Chengdu, 611130, China*Correspondent author: Zhuotong Nan, nanzt@njnu.edu.cn<br><br>This is a brief introduction to the experimental data involved in the manuscript titled "Constrained Simulation of Permafrost Thermal Changes from 1980 to 2018 on the Qinghai-Tibet Plateau". The data files are named according to their corresponding content and numbered based on their order of appearance in the manuscript for easy reference.<br>1. Data of parameter sensitivity ranking.xlsx The parameter rankings for sensitivity (IVARS50) for three sites (TGL, WQ, GZ), three depth layers (TOP, MID, BOT), and two variables (ST, SM) are stored in the Rank_Matrix Sheet. The final rankings are stored in the Rank_Final Sheet.<br>2. Data of objective function iteration.xlsx Iterations in the objective function during three parameter calibration experiments are stored in the CaliTGL, CaliTSH, and CaliMAP Sheets, respectively. For each Sheet, "ID" represents the iteration number, "NSE" or "Kappa" represents the corresponding objective function value, "Best" indicates the current best objective function value, "ID-Ens" denotes the iteration number corresponding to the 13 sets selected for parameter-ensemble simulation, and "ID-Default" denotes the iteration number corresponding to the default parameters.<br>3. Data of spatial validation ranking.xlsx Results of independent spatial validation for four experiments (annual means and change rates of ALT, TTOP, and GT10m), with RMSE sorted by site/survey area.<br>4. Data of spatial validation for CaliMAP.xlsx Detailed results of independent spatial validation for the CaliMAP experiment, where the observations sourced from Zhao et al., 2021 (https://doi.org/10.5194/essd-13-4207-2021)<br>5. Data of permafrost area voting.xlsx Cell-by-cell permafrost type changes (permafrost versus seasonally frozen ground) based on the CaliMAP experiment, derived from 13 ensemble simulation voting.<br>6. Data of ALT trend.xlsx Cell-by-cell ALT trends and their p-values based on the CaliMAP experiment.<br>7. Data of TTOP trend.xlsx Cell-by-cell TTOP trends and their p-values based on the CaliMAP experiment.<br>8. Data of DZAA trend.xlsx Cell-by-cell DZAA trends and their p-values based on the CaliMAP experiment.<br>9. Data of MAGT trend.xlsx Cell-by-cell MAGT trends and their p-values based on the CaliMAP experiment.<br>10. Data of permafrost variables time series.xlsx Time series of permafrost area, seasonally frozen ground area, and ALT, TTOP, DZAA, and MAGT based on the CaliMAP experiment. Note, the permafrost area were calculated under an area-equal projection after excluding glacier and lake area.<br>11. Data of discrepancies of site-based calibrations.xlsx Percentage discrepancies in permafrost area, ALT, TTOP, and DZAA in 2010 and phased trends of CaliFree, CaliTGL, and CaliTSH, compared to the CaliMAP simulations.