320 likes | 507 Views
Cross Equatorial Systems Northern and Southern Hemisphere Intrusions. Mike Davison HPC International Desks. Ridge Warm Core Anticyclonic (negative/clockwise) relative vorticity increases with height High tropopause heights. Trough Cold Core Cyclonic (Positive/
E N D
Cross Equatorial SystemsNorthern and Southern Hemisphere Intrusions Mike Davison HPC International Desks
Ridge Warm Core Anticyclonic (negative/clockwise) relative vorticity increases with height High tropopause heights Trough Cold Core Cyclonic (Positive/ counterclockwise) relative vorticity increases with height Low tropopause heights Characteristics of Northern Hemisphere Ridges and Troughs
Ridge Warm Core Anticyclonic (Positive/ counterclockwise) relative vorticity increases with height High tropopause heights Trough Cold Core Cyclonic (negative/clockwise) relative vorticity increases with height Low tropopause heights Characteristics of Southern Hemisphere Ridges and Troughs
What Happens When a Southern Hemisphere System Crosses the Equator? • Northern Hemisphere • Southern Hemisphere
Does it behaves like a Nrn Hemisphere Ridge or a Srn Hemisphere Trough?
Case Study 31 Oct 2001
Vertical Cross Section of Potential Temperature (K), Winds, and Relative Vorticity
Vertical Cross Section of Potential Temperature (K) and Winds