Scale-related bulk density of level sea ice during the MOSAiC freezing season (October 2019 to April 2020)

Scale-related seasonal bulk density of level sea ice using the data derived from in situ and ICESat-2 synergistic observations during MOSAiC MOSAiC: the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. Assuming hydrostatic equilibrium, the bulk density of level sea ice was determined using a combination of data from ice mass balance buoys, snow pits, Airborne Laser Scanning (ALS), and the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2). Variable Details: [Time]: covering the period from 5 October 2019 to 30 April 2020 in the format yyyyMMdd. [Daily Drift Location]: contains the latitude and longitude characterizing the daily position for the MOSAiC Central Observatory (CO). [IBD_DN (kg m−3)]: Estimated mean sea ice bulk density within a radius of ~50 km from CO (DN scale). [IBD_DN_Unc (kg m−3)]: Uncertainty of the DN scale sea ice bulk density results based on the Gaussian error propagation method. [IBD_Lsite (kg m−3)]: Estimated mean sea ice bulk density within a radius of ~25 km from CO (L-site scale). [IBD_Lsite_Unc (kg m−3)]: Uncertainty of the L-site scale sea ice bulk density results based on the Gaussian error propagation method. [IBD_Regional_ fitting (kg m−3)]: Fitting values combining sea ice bulk densities at the DN and L site scales using the quartic polynomial function (P < 0.01). [IBD_MCS_FYI (kg m−3)]: Core-based bulk density derived from the main first-year coring sites (MCS-FYI) during MOSAiC. [IBD_MCS_FYI_Std (kg m−3)]: Standard deviation of MCS-FYI bulk density estimates。 [IBD_MCS_SYI (kg m−3)]: Core-based bulk density derived from the main second-year coring sites (MCS-SYI) during MOSAiC. [IBD_MCS_SYI_Std (kg m−3)]: Standard deviation of MCS-SYI bulk density estimates。