CRYO2ICE radar/laser freeboards, snow depth on sea ice and comparison against auxiliary data during winter season 2020-2021 ...

• Main Author: Fredensborg Hansen, Renée Mie
• Format: Dataset
• Language: unknown
• Published: Technical University of Denmark 2023
• Subjects: Photogrammetry and remote sensing; Physical oceanography; Sea ice
• Online Access: https://dx.doi.org/10.11583/dtu.21369129.v1; https://data.dtu.dk/articles/dataset/CRYO2ICE_radar_laser_freeboards_snow_depth_on_sea_ice_and_comparison_against_auxiliary_data_during_winter_season_2020-2021/21369129/1

We investigated the near-coincident radar and laser altimetry observations from the CryoSat-2 and ICESat-2 Resonance (CRYO2ICE) campaign, which was initiated in July 2020, for the winter season of 2020-2021. We extracted Arctic radar and laser freeboard (the elevation of sea ice above the local sea level depending on scattering horizon), and binned the ICESat-2 observations to the CryoSat-2 observations using a search radius of 3500 m and applied inverse-distancing-weightning. From ICESat-2, both strong and weak beams from all three beam pairs were included. For CryoSat-2, we include the baseline-D from the European Space Agency (ESA), and include two further products using two other retrieval methodologies (CCI and LARM). We further derived snow depth from the difference in penetration of the radar and laser (using the freeboards), and this high-resolution orbit-based snow depth estimates were compared with nearest-neighbouring observations from basin-scale snow depth composites using either ...