Research Article
Recent Changes in the Annual Mean Regional Hadley Circulation and Their Impacts on South America
Figure 12
Walker circulation by averaging divergent wind and vertical velocity in the latitudinal band between 5°S and 5°N in the period 1996–2011 based on the Era-Interim reanalysis for (a) climatological annual mean and anomalies for (b) HCSA strong cases and (c) HCSA poleward expansion cases. The color scale represents the vector’s magnitude. The reference vector in (a) corresponds to 5 m s−1 whereas in (b) and (c) it is 1 m s−1.
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