7d6f5dd3-c3a7-4342-a734-dbddd3120f66 English UTF-8 Dataset Mr. Sakthivel Samy V National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Point of contact 2021-02-01 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Some Features of Aerosols and Pre-cursor Gases Observed over Antarctic Region during 24th Indian Antarctic Expedition. 2020-10-05 Creation Document digital The aerosols and pre-cursor gases data sets have been utilized to investigate the aerosol optical, physical and radiative properties, and their interface with simultaneously measured gases. Data over the Oceanic region has been collected on ship?s front deck. The daily mean AOD at a characteristic wavelength of 500 nm was found to be 0.042 with an average Angstrom coefficient of 0.24, revealing abundance of coarse-mode particles. Interestingly, the January fluxes were found to be less by about 20 per cent as compared to those in February. The average short-wave direct radiative forcing due to aerosols showed cooling at the surface with an average value of -0.47 W/m2 during the study period. The total column ozone increased from about 252 DU around 38o S to about 312 DU at 70o S, showing a gradual increase in ozone with increasing latitude. The study of aerosols is important for various reasons. For example, (i) aerosols influence the climate directly by altering the radiative energy transfer through their optical properties, and (ii) space-time variability of aerosol in homogeneities are needed for environmental research. Completed Dr. P C S Devara National Centre for Polar and Ocean Research (NCPOR) 8322525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND ictd@ncpor.res.in Principal investigator Earth Science-Atmosphere Theme Maitri Antarctic Place Some Features of Aerosols and Pre-cursor Gases Observed over Antarctic Region during 24th Indian Antarctic Expedition Project English climatologyMeteorologyAtmosphere 20.0 140.0 -90.0 30.0 2004-01-01 2005-12-31 TableDigital unknown unknown Mr. Sakthivel Samy V National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Distributor http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF687435215&userType=user&freeTextValue=Some+Features+of+Aerosols+and+Pre-cursor+Gases+Observed+over+Antarctic+Region+during+24th+Indian+Antarctic+Expedition.