Description:

The stratosphere is a key source of predictability of surface climate on sub-seasonal to seasonal (S2S) timescales. This session will consider studies linking stratospheric processes to the predictability of tropospheric weather and climate. We welcome studies that evaluate stratosphere-troposphere coupling processes in S2S prediction systems, and that link biases in models to prediction skill. We also will consider presentations that discuss novel model experiments to better isolate the role of the stratosphere on the predictability of surface climate and extremes.