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. 2022 Dec 8;10(3):nwac279. doi: 10.1093/nsr/nwac279

Figure 2.

Figure 2.

High seas shipping emission outputs and operational efficiencies. (a–h) provide the monthly carbon dioxide equivalent emissions and energy efficiency operational indicator for North Pacific Ocean High Seas (a), South Pacific Ocean High Seas (b), North Atlantic Ocean High Seas (c), South Atlantic Ocean High Seas (d), Arctic Ocean High Seas (e), Southern Ocean High Seas (f), Indian Ocean High Seas (g), and Other High Seas (h). The carbon intensity indicator (CII) is defined by the IMO as carbon dioxide emissions per actual cargo mile. The annual emission and efficiency growth rate are shown on the x-axis, with blue and red arrows, respectively.