Extended Data Fig. 10: Changes of summer persistent rainfall frequency in the observation.
From: Seasonal advance of intense tropical cyclones in a warming climate
a, b, Time series of the annual number of the persistent rainfall events (dashed line) and its trend (solid line) in (a) South China, and (b) the Gulf of Mexico during July-September during 1981–2017. The shadings represent 95% confidence intervals in the linear regression analysis.