Only 1 major sudden stratospheric warming (SSW) observed in SH (2002) but minor warmings occurred in 2009 and 2012 NH events occur in 3 out of every 5.
REFERENCES
A project with two components: 1) What is the predictive capability for SSWs (with SNAP)?
Large-scale orography and monsoon Akio KITOH
Alan Robock Department of Environmental Sciences Rutgers University, New Brunswick, New Jersey USA