Fig. 3: Temporal evolution of spatially averaged drifter-observed near-surface current speeds (blue lines and dots) and inverted SSWSs (red lines and dots) under weak TCs.
From: Limited global intensification of weak tropical cyclones over the past 30 years
Trends in both current and wind speeds are characterized by the slopes of the fitted lines (denoted as “s”), along with their 95% confidence intervals. The statistical significance of these trends was assessed using the P value (denoted as “p”) obtained from an F-test. The number of weak TCs considered in this analysis for each ocean basin were as follows: 4874 for the NA (a), 5682 for the NEP (b), 6623 for the NWP (c), 1032 for the NI (d), 4654 for the SI (e), and 2579 for the SP (f). The global ocean analysis integrates data from all of these basins (g).
