Daily gridded Arctic snow depth dataset over sea ice from AMSR2, CryoSat-2 and ICESat-2 (2012–2023), Version 1

Overview This data set provides daily estimates of snow depth over pan-Arctic sea ice covering the freezing seasons from 2012 to 2023, using Advanced Microwave Scanning Radiometer 2 (AMSR2) data. An improved seasonal algorithm was developed for AMSR2 snow depth retrieval, based on calibrated altimetric snow depths retrieved from CryoSat-2 and ICESat-2 measurements. Filename: YYYY-MM-dd [Year-Month-Day] Parameter(s): Snow detph (cm) / Snow detph uncertainty (cm) Platform(s): GCOM-W satellite, CryoSat-2, ICESat-2 Sensor(s): The Advanced Microwave Scanning Radiometer 2 (AMSR2), the Synthetic Aperture Interferometric Radar Altimeter (SIRAL), and the Advanced Topographic Laser Altimeter System (ATLAS) Data Format(s): NetCDF Temporal Coverage: 1 October 2012 to 30 April 2023 Temporal Resolution: 1 day Spatial Resolution: 25 km × 25 km Spatial Reference System(s): NSIDC Sea Ice Polar Stereographic North (EPSG:3411) Spatial Coverage: N:90 S:0 E:180 W:-180 The dataset consists of files for each day of the study period, along with the corresponding snow depth maps and uncertainty maps. Note: Snow depths were only retained for results with sea ice concentration above 50 % to ensure data quality. If you have any questions please contact: [e-mail], thanks! Yi zhou, Xianwei Wang, and Chentong Zhang are with School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China, and also with Key Laboratory of Polar Ecosystem and Climate Change (Shanghai Jiao Tong University), Ministry of Education, Shanghai, China. Ruibo Lei is with Key Laboratory for Polar Science, Ministry of Natural Resources, Polar Research Institute of China, Shanghai, China. Yu Zhang is with College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China, and also with Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China.