edu.ucar.opensky::articles:26865 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:58:20.457504 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7s186m6 https://doi.org/10.5067/8GQ8LZQVL0VL https Related Dataset #1 Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 https://doi.org/10.5067/MPYG15WAA4WX https Related Dataset #2 Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 https://doi.org/10.6084/m9.figshare.23646360.v1 https Related Dataset #3 SITDA_Arctic_Seasonal_Prediction Improvements in September Arctic sea ice predictions via assimilation of summer CryoSat-2 sea ice thickness observations 2023-12-28T00:00:00Z publication https://n2t.org/ark:/85065/d7s186m6 https://doi.org/10.1029/2023GL105672 Zhang, Y. author Bushuk, M. author Winton, M. author Hurlin, B. author Gregory, W. author Landy, J. author Jia, Liwei author UCAR/NCAR - Library publisher Because of a spring predictability barrier, the seasonal forecast skill of Arctic summer sea ice is limited by the availability of melt-season sea ice thickness (SIT) observations. The first year-round SIT observations, retrieved from CryoSat-2 from 2011 to 2020, are assimilated into the GFDL ocean-sea ice model. The model's SIT anomaly field is brought into significantly better agreement with the observations, particularly in the Central Arctic. Although the short observational period makes forecast assessment challenging, we find that the addition of May-August SIT assimilation improves September local sea ice concentration (SIC) and extent forecasts similarly to SIC-only assimilation. Although most regional forecasts are improved by SIT assimilation, the Chukchi Sea forecasts are degraded. This degradation is likely due to the introduction of negative correlations between September SIC and earlier SIT introduced by SIT assimilation, contrary to the increased correlations found in other regions. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation