Fig. 4: The seasonal evolution of the subtropical westerly jet and SCEII-associated wave train.
From: A dynamic link between spring Arctic sea ice and the Tibetan Plateau snow increment indicator
Spatial distribution of the climatological zonal wind (unit: m s−1) at 250 hPa during a OND, b DJF, and c FMA. Lagged regression of 250-hPa geopotential height (shading; unit: gpm) and wave activity flux (vectors; unit: m2 s−2) during d OND, e DJF and f FMA with respect to SCEII. The stippled regions indicate that the geopotential height anomalies are statistically significant at the 5% level. The signs “P” and “N” in a–c refer to the positive and negative geopotential height regions in d–f, respectively. The thick arrows approximately represent the propagation of the wave train.
