Fig. 9: Summer atmospheric changes associated with the preceding spring NAO.
From: Two different propagation patterns of spatiotemporally contiguous heatwaves in China
a Composite difference in summer geopotential height (shading) and horizontal wind (vectors) at 250 hPa between negative and positive spring NAO years (i.e., negative minus positive). b As a but for streamfunction (shading) and wave activity flux (vectors). Dotted area denotes significance at the 0.05 level.
