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¶meter=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