Fig. 3: Evolution of anomalous wind at 850 hPa and SSTA in terms of the springtime ASO. | npj Climate and Atmospheric Science

Fig. 3: Evolution of anomalous wind at 850 hPa and SSTA in terms of the springtime ASO.

From: Arctic stratospheric ozone as a precursor of ENSO events since 2000s

Fig. 3

a Regressed SSTA (shaded; °C, shading bar at bottom) and low-level wind anomaly (vector, at 850 hPa) in March–April (t + 0) against the springtime (March–April) ASO index for the period 2002–2023. Anomalous SST and winds are marked as significant at the 95% confidence level according to the Student’s t-test (degree of freedom: 20). b–e shows similar figures to (a), but in April–May (t + 1), May–June (t + 2), July–August (t + 4), and November–December (t + 8), respectively.

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