Fig. 4: Regression of heatwave frequency against seasonal differences of SM and ET.
From: Changes in land-atmosphere coupling increase compound drought and heatwaves over northern East Asia
Regression of heatwave frequency against the seasonal differences of (a, b) soil moisture and (c, d) evapotranspiration between summer (JJA) and spring (MAM) during (a, c) 1980–1998 and (b, d) 1999–2019. The dots denote the 95% confidence level based on the P values.
