Fig. 2: Spatial variability of the decadal component of HWCI over 2013–2021.
From: Decadal oceanic variability amplified recent heatwave in the Northern Hemisphere
a The 2013–2021 linear trend in the decadal component of HWCI. Significant trends at the 95% confidence level (two-sided P < 0.05), assessed with a random-phase resampling test55, are marked with dots. The outlined polygons denote some designated analysis domains. b, c Same as a but for the decadal component of HWCIS and HWCIA. Proportions of HWCIS and HWCIA in each region, as shown in the pie chart presented in (a).
