Figure (IMAGE)

Science China Press

Figure

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The spatial patterns of mean numbers ((a)–(c)) and decadal trends ((d)–(f)), and time series ((g)–(i)) of the three types of extreme hot days within compound heatwaves: independent hot day (the left column), independent hot night (the middle column), and concurrent daytime-nighttime hot extreme (the right column) over China in 1961−2017. Symbol ‘+’ in ((d)–(f)) indicates that the trend of a 5°×5° grid has passed the two tailed Student’s t test at the 95% confidence level. Texts in ((g)–(i)) are the trends with the corresponding statistical significance listed in parentheses.

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