Drift-aware sea ice thickness dataset from satellite remote sensing (trajectories from Oct to Apr and parcel width of 75km)

This dataset is a customized version of the Drift-Aware Sea-Ice Thickness (DA-SIT) product developed within the ESA Climate Change Initiative (CCI), described in Ricker et al. (2025a) and published in Ricker et al. (2025b). DA-SIT integrates sea ice thickness observations of ice parcels obtained from altimeters alongside their drift trajectories derived from passive microwave (PMW) radiometers. DA-SIT is based on the CCI climate data record version 3.0 of sea ice thickness (SIT) for the Northern Hemisphere polar region (Hendricks et al., 2018a; Hendricks et al., 2018b), sea ice concentration (OSI SAF, 2022b), and sea ice drift (OSI SAF, 2022a). For this customized version of DA-SIT, we use an advection period covering the full winter season (October to April) and a parcel width of 75 km. DA-SIT covers the growth seasons (1 October to 30 April) using observations from the radar altimeters Envisat (2002–2012/03) and CryoSat-2 (2010–2020). As an altimeter-based product, the primary derived quantity is sea ice freeboard, which is converted to sea ice thickness using auxiliary information on snow depth and snow and ice density. In addition to the mean thickness of each parcel and its trajectory, DA-SIT also provides, among other quantities, uncertainties associated with the thickness measurements and the trajectory location (drift uncertainty). Literature and datasets: Ricker, R., Lavergne, T., Hendricks, S., Paul, S., Down, E., Killie, M. A., and Bocquet, M.: Drift-aware sea ice thickness maps from satelliteremote sensing, The Cryosphere, 19, 3785–3803, https://doi.org/10.5194/tc-19-3785-2025, 2025a.1065 Ricker, R., Lavergne, T., Hendricks, S., Paul, S., Down, E., Killie, M. A., and Bocquet, M.: Drift-aware sea ice thickness maps from satelliteremote sensing, https://doi.org/10.5281/ZENODO.14733132, 2025b Hendricks, S., Paul, S., and Rinne, E.: ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Northern hemisphere sea ice thickness from theCryoSat-2 satellite on a monthly grid (L3C), v2.0, https://doi.org/10.5285/FF79D140824F42DD92B204B4F1E9E7C2, 2018a. Hendricks, S., Paul, S., and Rinne, E.: ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Northern hemisphere sea ice thickness from the965Envisat satellite on a monthly grid (L3C), v2.0, https://doi.org/10.5285/F4C34F4F0F1D4D0DA06D771F6972F180, 2018b OSI SAF: Global Sea Ice Drift Climate Data Record Release v1.0 - Multimission, https://doi.org/10.15770/EUM_SAF_OSI_0012, 2022a. OSI SAF: Global Sea Ice Concentration Climate Data Record v3.0 - Multimission, https://doi.org/10.15770/EUM_SAF_OSI_0013, 2022b.