A sea ice concentration product in the polar regions derived from the Chinese FengYun-3 MWRI sensors ...

• Main Author: Chen, Ying
• Format: Article in Journal/Newspaper
• Language: English
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; Arctic; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-2998; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018875

<!--!introduction!--> Sea ice concentration (SIC) as the main geophysical variable for quantifying the sea ice change in the polar regions is very important for the studies of climate and polar marine environments. This study derives a SIC product covering the Arctic and Antarctic from November 2010 to December 2019, which is the first long-term SIC product derived from the Microwave Radiation Imager (MWRI) sensors onboard the Chinese FengYun-3B, -3C, and -3D satellites, after a recent re-calibration of brightness temperature. We improved the previous Arctic Radiation and Turbulence Interaction Study Sea Ice (ASI) dynamic tie points algorithm mainly by changing input brightness temperature and initial tie points. The MWRI-ASI SIC was compared to the existing ASI SIC products and validated using ship-based SIC observations. Results show that the MWRI-ASI SIC mostly coincides with the ASI SIC obtained from the Special Sensor Microwave Imager series sensors, with overall biases of -1.4 ± 1.8% and 0.5 ± ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...