The Seasonal Evolution of the Teleconnection Between the Greenland Blocking and Tropic Western Pacific Warm Pool

In this study, we identify the seasonal evolution of the teleconnection between the western Pacific warm pool and the Greenland blocking from spring to summer. The March, April and May (MAM) tropic Pacific sea surface temperature anomalies trigger the Rossby wave train propagation into the high latitudes, which contribute to a negative anomalous Greenland blocking. The response of tropical atmosphere caused the abnormal circulation of atmosphere at high latitudes. In the meantime, it caused significant cold SST anomalies in the eastern tropical Pacific, which in turn weakened and shifted the convective response to the east along the equator, resulting in the instability of the teleconnection between the tropics and the high latitudes in summer.