Fig. 1: Global trends of sea surface eddy kinetic energy (EKE) and their zonal centroid shifts from 1993 to 2022 from GLORYS.
From: Shoreward shift of oceanic mesoscale activity over the last three decades
a Distribution of surface EKE trends. b–k Time-series of zonal centroid anomalies (compared to the mean location over the time period) of EKE (gray) in west boundary regions including Western North Pacific (WNP, b), Western North Atlantic (WNA, c), Western South Indian Ocean (WSI, d), Western South Pacific (WSP, e) and Western South Atlantic (WSA, f), east boundary regions including Eastern South Atlantic (ESA, g), Eastern North Pacific (ENP, h), Eastern North Atlantic (ENA, i), Eastern South Indian Ocean (ESI, j), and Eastern South Pacific (ESP, k), and the global ocean l, superimposed with the linear trends. Gray shadings are the 95% confidence intervals for the linear fit based on the Student’s t-test. The plot labeled with * and ** indicates significance at the 90% and 95% confidence level, respectively. “V = ” on subplots “b–l” describes the shift speed in km per decade. The black dots indicate regions where the EKE trends are significant at 90%.
