Figure 1
From: Surface frontogenesis by surface heat fluxes in the upstream Kuroshio Extension region

Winter (February) climatology. Monthly climatology of (a) sea surface temperature (SST) (in °C), (b) mixed layer depth (MLD) (in m), (c) net surface heat flux (in W m−2), and (d) the surface heat flux term in Eq. (1) (in °C month−1) in February. The KEO and JKEO mooring sites are shown in (a) and absolute values of the meridional SST gradient (in °C °latitude−1) are shown in (b–d) with contours. The contour interval is 1.5 (0.5) °C °latitude−1 for thick (thin) contours and contours less than 1.5 °C °latitude−1 are not drawn. The figure was prepared with GrADS v.1.9b4 (http://cola.gmu.edu/grads/).