 The study found no trend in sea ice thickness or extent in the Bohai Sea from 2000 to 2016, despite a correlation between mean ice thickness and average air temperature, and median ice extent and negative accumulated temperature. The rate of increase in air temperature around the Bohai Sea is lower than that in northern polar areas, which has not resulted in a decreasing trend in sea ice thickness or extent. This article was authored by Luanxi Ouyang, Feng Minghui, Lixianzhu, and others.