Extratropical cyclones (or low-pressure systems) traveling along the Kuroshio in East Asia most frequently occur in spring, bringing heavy rain and snowfall in the region. Researchers at the University of Tsukuba unveiled the mechanism underlying the peak observed in the activity of Kuroshio cyclones during spring using four-dimensional atmospheric data spanning several decades. Their findings revealed that air over Eurasia warmed from winter to spring intensified the low-level jet stream around the East China Sea, increasing the occurrence probability of low-pressure systems during spring.
Mechanisms for early spring peak of extratropical cyclone activity in East Asia explained
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