Research Article

The Spatial Pattern of the Sun-Hurricane Connection across the North Atlantic

Figure 6

August through October averaged SOI anomalies and regional hurricane counts for 1866 to 2010. (a) Regional North Atlantic hurricane counts for the thirty-five lowest SOI (i.e., El Niño) seasons from 1866 to 2010. (b) The same, except for the thirty-five highest SOI (i.e., La Niña) seasons. (c) Their difference plot (El Niño minus La Niña). Negative (positive) values indicate regions where fewer (more) hurricanes are observed during El Niño seasons compared to La Niña seasons. (d) A spatially smoothed version of subplot (c) where the raw count difference of each region has been averaged with the average of its (maximum of) six neighbors.
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(a)
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(b)
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(c)
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(d)