Fig. 1: Optimized blocking index correlates well with heatwave frequency. | npj Climate and Atmospheric Science

Fig. 1: Optimized blocking index correlates well with heatwave frequency.

From: Heatwave–blocking relation change likely dominates over decrease in blocking frequency under global warming

Fig. 1

Scatter plots of heatwave frequency versus optimized blocking index, both averaged over land points north of 40°N, in the MPI-ESM1-2-LR model. Each point represents the mean over one summer (two trailing digits of the year labelled). The ordinary least-squares linear regression line is plotted in yellow. The vertical error bars show the 1σ ranges in estimating the 10-year-mean heatwave frequency using the mean blocking frequency of the historical run (yellow, 1966–2005) and SSP585 run (blue, 2060–2099). r and R2 are shown (based only on one model and therefore slightly deviate from the multi-model mean).

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