259529.fig.009
Figure 9: Number of Atlantic tropical cyclones (TCs) during July–September, for (a) total TCs, (b) AEW-induced TCs, and (c) southern-track AEW-induced TCs. (d)–(f) same as (a)–(c) but for intense TCs of Category 3 and above. The linear trends and slopes are given. All trends are significant at the 95% confidence interval per t-test.