The purpose of this special section is to bring together the latest multidisciplinary research on the Arctic climate and sea ice and to provide data monitoring, forecasting, and service for China’s commitment to the development of the Ice Silk Road. This special section contains five papers, covering a broad scope of Arctic research topics.
Ji et al. (2021) made a comprehensive analysis of sea ice and snow morphology during summer in the Pacific sector of Arctic Ocean. They found that there are lots of areas with low sea ice concentration south of 78°N, while sea ice concentration and thickness increase with the latitude to north of 78°N.
Qin et al. (2021) retrieved the sea surface wind speed from Sentinel-1 SAR images using conventional retrieval and machine learning methods. Their results are better than those retrieved using the Polarization Ratio models.
Chen et al. (2021) cross-calibrated the brightness temperature obtained from FY-3B/MWRI and Aqua/AMSR-E. Using robust linear regression analysis, the slopes, and intercepts of the fitted equations for the brightness temperature can be used to calibrate MWRI brightness temperature data.
Wang et al. (2021) quantifies the ice flow acceleration (21.1%) of Pedersenbreen Glacier during 2016–2017 and unveils the related mechanism. They found that the softened glacier ice due to the air temperature increase (1.5°C) account for 2.7%–30.5%, while other factors account for 69.5%–97.3% of the ice flow acceleration.
An et al. (2021) monitored the vertical crustal movements and sea level changes around Greenland using multiple data sources. They found that although the mass loss of Greenland ice sheet can cause considerable global sea level rise, eustatic movements along the coasts of Greenland are quite complex under different mechanisms of sea level changes.