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

Bromwich, David H.; Carrasco, Jorge F.; Turner, John

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

Bromwich, David H.; Carrasco, Jorge F.; Turner, John ORCID: https://orcid.org/0000-0002-6111-5122. 1996 A downward developing mesoscale cyclone over the Ross Ice Shelf during Winter. Global Atmosphere and Ocean System, 4. 125-147.

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Abstract/Summary

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.

Item Type:

Publication - Article

Programmes:

BAS Programmes > Pre 2000 programme

Additional Keywords:

mesoscale cyclogenesis, midtropospheric formation, downward development, Antarctica

Date made live:

26 Oct 2016 08:05 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/514935