Figure 1

General circulation in the North Pacific showing the North Equatorial Current, Kuroshio, Kuroshio Extension, California Current, Alaska Gyre and Western Subarctic Gyre. The coloured arrows denote the climatology of the surface ocean current velocity over the period of 2003–2017, using data from the European Centre for Medium-range Weather Forecasts Ocean Reanalysis System 4 (ORAS4, http://icdc.cen.uni-hamburg.de/thredds/aggregationOras4Catalog.html). This figure was generated using the NCAR Command Language (version 6.4.0) [Software]. (2017). Boulder, Colorado: UCAR/NCAR/CISL/TDD. https://doi.org/10.5065/D6WD3XH5.