ENVIRONMENTAL SCIENCES, SUSTAINABILITY SCIENCE Correction for “Geophysical potential for wind energy over the open oceans,” by Anna Possner and Ken Caldeira, which was first published October 9, 2017; 10.1073/pnas.1705710114 (Proc Natl Acad Sci USA 114:11338–11343).

The authors note that Fig. 6 appeared incorrectly. The corrected figure and its legend appear below.

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Fig. 6.

Vertical profile of the climatological mean change in horizontal wind speed averaged horizontally over the four central points of each wind farm in the North Atlantic and North America. Differences were determined between each wind farm simulation and the preindustrial climate over the 50-y analysis period. Colors correspond to wind farms shown in Fig. 2A. Colors in the brown and red spectrum correspond to ocean wind farms, and colors in the blue spectrum correspond to onshore wind farms of varied domain size.

The authors also note that on page 11341, right column, second paragraph, lines 5–6, “the overlying free troposphere remains largely unaffected by wind farms the size of Greenland” should instead appear as “a significant reduction in wind speed is found only in the low troposphere for wind farms up to the size of Greenland.”