PMW Sea Ice Thickness - from SSM/I and SSMIS CDR

Sea Ice Thickness is retrieved from brightness temperatures acquired by the SSM/I and SSMIS passive microwave radiometers from 1992 to 2020 for the months Oct-Mar. The algorithm uses the statistical relationships observed between passive microwave observations and SIT to train a Multi-Layered Perceptron (MLP) to reproduce ICESat-2 SIT from brightness temperatures at 19 and 37 GHz. The MLP has been trained on the polar winter 2018-2019 where it showed good performance when compared to the CryoSat-2 satellite retrieval and the Operation Ice Bridge airborne measurements.More details in: Soriot, C., Prigent, C., Jimenez, C., & Frappart, F. (2023). Arctic sea ice thickness estimation from passive microwave satellite observations between 1.4 and 36 GHz. Earth and Space Science, 10(2), e2022EA002542 Soriot, C., Vancoppenolle, M., Prigent, C., Jimenez, C., & Frappart, F. (2024). Winter arctic sea ice volume decline: uncertainties reduced using passive microwave-based sea ice thickness. Scientific Reports, 14(1), 21000.