Fig. 9: Zonal winds for AO phase.
250-hPa zonal winds (m s−1) divided by cos(latitude) for the positive (red line) and negative (blue) AO phases. The AO index greater (less) than 1.0 (–1.0) is used for the positive (negative) phase.
Fig. 9: Zonal winds for AO phase. | npj Climate and Atmospheric Science
