Fig. 4: Connection between surface temperature (Ts) and the first leading mode (PC1) of empirical orthogonal function.
From: Uniformly elevated future heat stress in China driven by spatially heterogeneous water vapor changes

A Regression of Ts on the first leading mode. Black dots denote areas with significant correlation (P < 0.05). B Ts trend over 1979–2018. Black dots denote areas with significant correlation (P < 0.05). C Time series of PC1 and average Ts anomaly of the northern region in East Asia (NEA, 33°N-50°N, 80°E-120°E, red boxes in A and B). D The scatter plot between Ts anomalies in NEA and PC1 in each year from 1979 to 2018. Source data are provided as a Source Data file.