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. 2012 Oct 3;2:702. doi: 10.1038/srep00702

Figure 1. Poleward shifts in the southern branch of the zonal mean Hadley cell edge.

Figure 1

(a) Seasonal shifts of the southern branch of the zonal mean Hadley cell edge from four reanalyses products over 1979–2010: 20thC-ReanV2, NCEP-NCAR, NCEP-DOE and JRA-25 (data only available up to 2009 at time of writing), based on linear trends; (b) the corresponding time series for April-May with linear trend lines (dashed) for 20thC-ReanV2 and NCEP-NCAR from 1948–1978. Error bars in (a) signify the standard error of the trends.