Climatology of the “Instant Occlusion” Phenomenon for the Southern Hemisphere Winter
Open Access
- 1 January 1981
- journal article
- Published by American Meteorological Society in Monthly Weather Review
- Vol. 109 (1) , 177-181
- https://doi.org/10.1175/1520-0493(1981)109<0177:cotopf>2.0.co;2
Abstract
A five-winter satellite study of the ‘instant occlusion" mode of extratropical cyclogenesis has been undertaken for the Southern Hemisphere oceans. The phenomenon shows a maximum frequency of occurrence over latitudes 30–55°S, where it is closely associated with the locations of the winter “climatic fronts” The longitudes of Australasia and the eastern Indian Ocean are particularly favored for "instant occlusion” developments. Month-to-month variations in the frequency of their occurrence are relatedtothebemispheric-scale changes in total cyclonic vortex activity observed during the winter season.Keywords
This publication has 0 references indexed in Scilit: