Research Article
Recent Changes in the Annual Mean Regional Hadley Circulation and Their Impacts on South America
Figure 8
Correlation between the HCSA annual intensity index and the annual mean zonal wind (m s−1) in the period 1996–2011 based on the Era-Interim reanalysis at (a) 200 hPa and (b) 850 hPa and RegCM4 simulation at (c) 200 hPa and (d) 850 hPa. Contour intervals are 0.2 and values above 0.5 are shaded and are statistically significant at 95% confidence level. For clarity purposes, it should be noted that the HCSA annual intensity index time series have been multiplied by (−1).
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