Researchers have linked extreme cold events in southern China to Arctic autumn sea-ice extent using paleoclimate data from 1289-2017, discovering a strengthening relationship since the 1980s. A joint research team led by Prof. Cunde Xiao from Beijing Normal University, Dr. Zhiheng Du, and Dr. Jia
Arctic sea ice extent on September 18, 2022. The line represents the 1981-2010 median. A joint research team from Beijing Normal University and the Northwest Institute of Eco-Environment and Resources has discovered a connection between extreme cold events in southern China and Arctic autumn sea-ice extent.
However, the sea-ice extent exhibits considerable annual variability and there is no clear understanding of the relationship between the long-term sea-ice variability and extreme cold events in China’s history. They also compared the records selected for the study with climate records of the historical Chinese dynasties and other relevant references. Meanwhile, modern-day reanalysis data were used to estimate the extreme cold events from 1872 to 2017.
“As we have seen this spring, weather events such as dust storms are more frequent and temperatures are relatively high. These phenomena may be related to the anomalous Arctic sea ice extent,” said Dr. Zhiheng Du.
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