A downward developing mesoscale cyclone over the Ross Ice Shelf during winter

Bromwich D.H.; Carrasco J.F.; Turner J.

Keywords: sea, polar, shelf, meteorology, antarctica, winter, ice, cyclogenesis, mesoscale, Ross


A case of midtropospheric mesoscale cyclone formation and downward development adjacent to and over the Ross Ice Shelf, Antarctica during May 1988 is presented. This event involved atmospheric phenomena over a wide range of spatial scales from the meso to the synoptic. The mesoscale vortex apparently developed within a middle-level short-wave trough. Warm air advection associated with a synoptic-scale front, which developed upwind from the axis of a blocking ridge located over the Antarctic Peninsula and which traveled westward across West Antarctica, created a strong temperature gradient (baroclinic zone) at low-levels at the northern edge of the Ross Ice Shelf. The atmosphere below the initially midtropospheric mesoscale vortex was destablized by the warm air advection, inducing its downward development.

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Título de la Revista: Global Atmosphere and Ocean System
Volumen: 4
Número: 2-4
Editorial: Society of Laparoendoscopic Surgeons
Fecha de publicación: 1996
Página de inicio: 125
Página final: 147
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0030561873&partnerID=q2rCbXpz