Captions for Figures S1 to S6
Figure S1. Surface currents monthly average from the HYCOM climatology. The colors indicate the current’s magnitude, and the arrows’ the current direction.
Figure S2. Monthly climatological Lagrangian Coherent Structures. The colors indicate the strength of attraction, where red is the strongest, and white indicates low persistent stirring and isolated regions behind a transport barrier.
Figure S3. Correlation matrix of the magnitude between each of the 8 SOMs spatial patterns from the HYCOM climatology (HC) and the 8 SOMs spatial patterns from the HYCOM instantaneous time series (HI). Only significant correlations are shown as different from zero.
Figure S4. Correlation matrix of the vector angle from each of the 8 SOMs spatial patterns from the HYCOM climatology (HC) and the 8 SOMs spatial patterns from the HYCOM instantaneous time series (HI). Only significant correlations are shown as different from zero.
Figure S5. Top panel is the BMUs for the climatological velocity (red line), repeated each year of the time series for comparison, and the BMUs for the instantaneous velocity (blue line) over 1994–2018. The middle panel is a histogram of the difference between the two BMUs in the top panel. The bottom panel is each year’s sum of differences other than zero, the sum of the histogram in the second panel; the green line is the 1994–2018 average.
Figure S6. The color contours are the density of trajectories points that were initiated along the coastline of the Mexican Caribbean and integrated back in time to find their provenance using HYCOM Global instantaneous velocity of August 2018. Only the most attracting August cLCS (black lines) are plotted (i.e. when their attraction strength is above 1.2).