Catalina Eddies and Coastally Trapped Disturbances

摘要: Abstract Observations show that coastally trapped disturbances (CTDs) often accompany Catalina eddies appear in the southern California bight. In a previous modeling study of CTDs using simple environments and forcings, simulations also evolved mesoscale eddy played critical role CTD formation evolution. this forcings are extended to model bight, produce both CTDs. The simulated studies dynamically equivalent. primary mechanism for is lee troughing, produced provided 1) there sufficient stratification environment; 2) offshore flow strength, breadth, duration; 3) terrain significant troughing. can propagate out bight region when synoptic winds...