The features of the decadal evolution of different durations of continuous Meiyu precipitation
and their possible cause from the viewpoint of the low-level intraseasonal oscillation (ISO)
are examined in this study. It is found that the total frequency of Meiyu precipitation events of
certain duration gradually decreases as the duration of the events increases, and the main
center of the events moves from the northern Yangtze-Huaihe River Valley (YHRV) to the
southern YHRV. The linear trends of different durations of continuous Meiyu precipitation …