Study reveals weakening of circumglobal teleconnection pattern under future warming and its impact on heat waves

The circumglobal teleconnection pattern (CGT) is a key mode of atmospheric variability during boreal summer, identified by an upper-tropospheric wave train propagating along the subtropical jet. CGT is one of the critical drivers of Northern Hemisphere mid-latitude heat waves. However, how the structure of CGT responds to global warming and its effect on future heat wave characteristics remains inconclusive.