Fig. 4: Structure of anomalous PV and potential temperature. | npj Climate and Atmospheric Science

Fig. 4: Structure of anomalous PV and potential temperature.

From: Interannual impact of tropical southern Atlantic SST on surface air temperature over East Asia during boreal spring

Fig. 4

a Cross-section of the correlation coefficients between the TSAI and potential temperature (contours) and PV (shading) along lines A–B–C in Fig. 2 during MAM. Solid (dashed) lines indicate positive (negative) values. Areas with values exceeding the 0.05 significance level are highlighted by white dots. b and c Schematic showing the PV–θ mechanism for the case of a positive and negative PV anomaly, respectively. Colored circles in (b) and (c) indicate positive and negative PV anomalies, respectively. Dashed lines in b and c indicate isentropes.

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