Inter-comparison and evaluation of Arctic sea ice type products

Abstract - 1.32 × 10 6 0.49 × 10 6 2. Among them, KNMI-SITY and Zhang-SITY in the QuikSCAT (QSCAT) period (2002–2009) agree best with NSIDC-SIA and perform the best, with the smallest bias of - 0.001 × 10 6 2 in first-year ice (FYI) extent and - 0.02 × 10 6 2 in MYI extent. In the Advanced Scatterometer (ASCAT) period (2007–2019), KNMI-SITY tends to overestimate MYI (especially in early winter), whereas Zhang-SITY and IFREMER-SITY tend to underestimate MYI. C3S-SITY performs well in some early winter cases but exhibits large temporal variabilities like OSISAF-SITY. Factors that could impact performances of the SITY products are analysed and summarized. (1) The Ku-band scatterometer generally performs better than the C-band scatterometer for SITY discrimination, while the latter sometimes identifies FYI more accurately, especially when surface scattering dominates the backscatter signature. (2) A simple combination of scatterometer and radiometer data is not always beneficial without further rules of priority. (3) The representativeness of training data and efficiency of classification are crucial for SITY classification. Spatial and temporal variation in characteristic training datasets should be well accounted for in the SITY method. (4) Post-processing corrections play important roles and should be considered with caution.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Inter-comparison and evaluation of Arctic sea ice type products ; volume:17 ; number:1 ; year:2023 ; pages:279-308 ; extent:30 ; The Cryosphere ; 17, Heft 1 (2023), 279-308 (gesamt 30)

Contributors, Places and Time

• Creator: Ye, Yufang ; Luo, Yanbing ; Sun, Yan ; Shokr, Mohammed ; Aaboe, Signe ; Girard-Ardhuin, Fanny ; Hui, Fengming ; Cheng, Xiao ; Chen, Zhuoqi

Further information

• DOI: 10.5194/tc-17-279-2023
• URN: urn:nbn:de:101:1-2023033008171757647422
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:47 AM CEST