The AntSMB dataset: a comprehensive compilation of surface mass balance field observations over the Antarctic Ice Sheet

Abstract. A comprehensive compilation of observed records is needed for accurate quantification surface mass balance (SMB) over Antarctica, which a key challenge calculation Antarctic contribution to global sea level change. Here, we present the AntSMB dataset: new quality-controlled dataset variety published field measurements Ice Sheet SMB by means stakes, snow pits, ice cores, ultrasonic sounders, and ground-penetrating radar (GPR). The collects 3579 individual multi-year-averaged observations, 687 annually resolved time series from 675 sites extending back past 1000 years, daily covering 245 years 32 across whole sheet. These are derived stakes/stake farms, sounders. Furthermore, GPR included in dataset, an area 22 025 km2. This first ice-sheet-scale at different temporal (daily, annual, multi-year) resolutions multiple types measurement available https://doi.org/10.11888/Glacio.tpdc.271148 (Wang et al., 2021). database has potentially wide applications such as investigation spatial variability SMB, model validation, assessment remote sensing retrievals, data assimilation. As case estimation, used assess performance ERA5 Antarctica.