A Note on the Role of Sub-Tropical Anticyclones of Southern Hemisphere on the Severity and Persistence of Weather over Coastal Antarctica.

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Brief Description (Abstract):

Role of sub-tropical anticyclones on the modification of weather over coastal region of Antarctica is generally underestimated. The aim of this paper is to highlight-their role, a viewpoint, which is required to be developed further.

Status: Completed

Purpose: A cursory glance on the general circulation (Fig. 1) in the Southern hemisphere brings out the following- a) The sub-tropical anticyclone belt 30-40?S. b) The zone of strong westerlies in temperate latitudes with strongly varying air pressure decreasing poleward in the mean. c) The polar zone with asymmetric circumpolar vortex (Sub Polar Low) and Continental High. The asymmetry of the polar vortex is a consequence of the asymmetric topography of Antarctica. d) The meridional temperature gradient between the coast of Antarctica and open ocean near the surface is moderate in the summer and large during the rest of the year. The sign of this gradient does not change all through the year. For variety of reasons, the major attention of the synopticians of weather is on the cyclogenesis of the migratory cyclones moving in the sub-polar region.

Presentation Format: Documentdigital

Distribution Format: unknown

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Supplemental Information:

TableDigital

Keyword(s): Earth Science-Atmosphere,

Place/Location(s): Southern Ocean, Antarctic,

Project: A Note on the Role of Sub-Tropical Anticyclones of Southern Hemisphere on the Severity and Persistence of Weather over Coastal Antarctica,

Topic Category(s): ClimatologyMeteorologyAtmosphere,

Date(s): 2020-09-07 (Creation),

Resource Contact(s):
1. Name : Dr. A C Sharma
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : ictd [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Distributor Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : Distributor
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Metadata Contact(s):
1. Name : Mr. Sakthivel Samy V
    Role : PointOfContact
    Phone : +91-832-2525515
    E-Mail : vssamy [ at ] ncpor.res.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    Address : Headland Sada, Vasco da Gama, Goa 403804
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 1985-01-01
End Date   : 1986-12-31