Measurement of Aerosol Particles along a Section from 8N Latitude to Antarctica in the South western Region of the Indian Ocean

Access URI: http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF-1374843428&userType=user&freeTextValue=Measurement+of+Aerosol+Particles+along+a+Section+from+8%3FN+Latitude+to+Antarctica+in+the+South+western+Region+of+the+Indian+Ocean

Brief Description (Abstract):

Measurements of aerosol particles along a transect in the southwestern Indian Ocean showed a gradual decrease of the particles towards Antarctica. The concentrations varied from 65.3 ? 1.9 µg/m3 at 8?37'N latitude to 0 in Antarctica. Peaks were recorded at places where the air coming from other continents seemed to influence the atmosphere. The observed peak in the zone of antarctic convergence may be due to the effect of the flow of surface air from the Antarctica towards the equator. Katabatic wind isprobably the cause of another peak observed near the Antarctic continent. An inverse relation has been found between the wind speed and aerosol content which is presumably due to "scrubbing effect" and dispersion.

Status: Completed

Purpose: The most significant source for the transport of particles and other material to the Southern Ocean and to Antarctica is by the atmosphere. However, the effect of the continental air in these regions can hardly be felt in areas beyond 60?S. This is because the air can be expected to be continuously scrubbed asa result of its long residence time during its transport. Also aerosol particles can be lost due to the ormation of condensation nuclei in the clouds.

Presentation Format: Documentdigital

Distribution Format: unknown

Distribution Format Version: unknown

Supplemental Information:

TableDigital

Keyword(s): Earth Science-Atmosphere,

Place/Location(s): Dakshin Gangotri, Antarctic,

Project: Measurement of Aerosol Particles along a Section from 8N Latitude to Antarctica in the South western Region of the Indian Ocean,

Topic Category(s): ClimatologyMeteorologyAtmosphere,

Date(s): 2020-08-18 (Creation),

Resource Contact(s):
1. Name : Dr. R Sen Gupta
    Role : PrincipalInvestigator
    Phone : 8322525515
    E-Mail : vssamy [ at ] ncaor.gov.in
    Organization Name : National Centre for Polar and Ocean Research (NCPOR)
    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)
    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)
    City : Vasco-da-Gama
    State : Goa
    Postal Code : 403804
    Country : IND

Extent:
Start Date : 1981-01-01
End Date   : 1982-12-31