2003: Extratropical Southern Hemisphere cyclones: Harbingers of climate change

• Main Author: John C. Fyfe
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Antarctic Ocean; The Antarctic; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.2842; http://www.cccma.ec.gc.ca/papers/jfyfe/PDF/Fyfe2003a.pdf

In concert with a poleward shift in baroclinicity, the synoptic environment south of 408S appears to have changed significantly over recent decades. South of 408S and north of the Antarctic Ocean the number of cyclones has dramatically decreased, while over the Antarctic Ocean a modest increase has occurred. A global climate model with anthropogenic forcing produces similar historical changes, and under a ‘‘business-as-usual’ ’ emissions scenario predicts that the number of sub-Antarctic Ocean cyclones will drop by over 30 % between now and century’s end. 1.