Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica
Measurements of aerosol optical depth (AOD), mass concentrations of black carbon (M B ) and composite aerosols (M T ) in the marine atmospheric boundary layer (MABL) were made during onward [Dec 2007 to Jan 2008; Northern Hemispheric (NH) winter] and return (Mar–Apr 2008; NH spring) legs of the tran...
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ftindianacasci:oai:repository.ias.ac.in:98703 2023-05-15T13:39:33+02:00 Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. 2013-11 http://repository.ias.ac.in/98703/ http://www.sciencedirect.com/science/article/pii/S1364682613002149 unknown Elsevier Science Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. (2013) Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica Journal of Atmospheric and Solar-Terrestrial Physics, 104 . pp. 18-28. ISSN 1364-6826 QE Geology Article PeerReviewed 2013 ftindianacasci 2015-04-03T22:14:44Z Measurements of aerosol optical depth (AOD), mass concentrations of black carbon (M B ) and composite aerosols (M T ) in the marine atmospheric boundary layer (MABL) were made during onward [Dec 2007 to Jan 2008; Northern Hemispheric (NH) winter] and return (Mar–Apr 2008; NH spring) legs of the trans-continental cruise of 27th Indian Scientific Expedition to Antarctica (ISEA) during International Polar Year of 2007–2008. Large latitudinal gradients are seen; with AOD decreasing from coastal India (AOD~0.45) to coastal Antarctica (AOD~0.04) during NH winter. The measurements also evidenced a strong seasonality of AOD over all regions, with a decrease of the values and gradient in NH spring. BC concentration in the MABL decreases exponentially from 3800 ng m −3 (over 10°N) to 624 ng m −3 near equator and much lower values (< 100 ng m −3 ) over southern oceanic region. Seasonality in the latitudinal gradients of AOD, M B and M T exists over regions north of 20°S. Multi campaign [Pilot Expedition to Southern Ocean (2004), Special Expedition to Larsemann Hills (2007) and Tropical Indian Ocean cruise (2010)] analysis over these oceanic regions showed that the pattern over the regions (south of 20°S) remained the same. Seasonality of AOD exists over Atlantic Ocean as well. Temporal variation of AOD at different latitudes derived from AERONET data also showed marked seasonality and latitudinal variation in northern hemisphere than in southern Hemisphere. Satellite retrieved AOD showed good correlation with the ship borne measurements; while GOCART retrieved AOD underestimates but gives a measure of the spatial variations. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal International Polar Year Southern Ocean Indian Academy of Sciences: Publication of Fellows Southern Ocean Indian Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) |
institution |
Open Polar |
collection |
Indian Academy of Sciences: Publication of Fellows |
op_collection_id |
ftindianacasci |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
topic_facet |
QE Geology |
description |
Measurements of aerosol optical depth (AOD), mass concentrations of black carbon (M B ) and composite aerosols (M T ) in the marine atmospheric boundary layer (MABL) were made during onward [Dec 2007 to Jan 2008; Northern Hemispheric (NH) winter] and return (Mar–Apr 2008; NH spring) legs of the trans-continental cruise of 27th Indian Scientific Expedition to Antarctica (ISEA) during International Polar Year of 2007–2008. Large latitudinal gradients are seen; with AOD decreasing from coastal India (AOD~0.45) to coastal Antarctica (AOD~0.04) during NH winter. The measurements also evidenced a strong seasonality of AOD over all regions, with a decrease of the values and gradient in NH spring. BC concentration in the MABL decreases exponentially from 3800 ng m −3 (over 10°N) to 624 ng m −3 near equator and much lower values (< 100 ng m −3 ) over southern oceanic region. Seasonality in the latitudinal gradients of AOD, M B and M T exists over regions north of 20°S. Multi campaign [Pilot Expedition to Southern Ocean (2004), Special Expedition to Larsemann Hills (2007) and Tropical Indian Ocean cruise (2010)] analysis over these oceanic regions showed that the pattern over the regions (south of 20°S) remained the same. Seasonality of AOD exists over Atlantic Ocean as well. Temporal variation of AOD at different latitudes derived from AERONET data also showed marked seasonality and latitudinal variation in northern hemisphere than in southern Hemisphere. Satellite retrieved AOD showed good correlation with the ship borne measurements; while GOCART retrieved AOD underestimates but gives a measure of the spatial variations. |
format |
Article in Journal/Newspaper |
author |
Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. |
author_facet |
Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. |
author_sort |
Chaubey, Jai Prakash |
title |
Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
title_short |
Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
title_full |
Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
title_fullStr |
Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
title_full_unstemmed |
Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica |
title_sort |
spatio-temporal variations in aerosol properties over the oceanic regions between coastal india and antarctica |
publisher |
Elsevier Science |
publishDate |
2013 |
url |
http://repository.ias.ac.in/98703/ http://www.sciencedirect.com/science/article/pii/S1364682613002149 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
Southern Ocean Indian Larsemann Hills |
geographic_facet |
Southern Ocean Indian Larsemann Hills |
genre |
Antarc* Antarctica Antarctica Journal International Polar Year Southern Ocean |
genre_facet |
Antarc* Antarctica Antarctica Journal International Polar Year Southern Ocean |
op_relation |
Chaubey, Jai Prakash Moorthy, Krishna K. Babu, Suresh S. Gogoi, Mukunda M. (2013) Spatio-temporal variations in aerosol properties over the oceanic regions between coastal India and Antarctica Journal of Atmospheric and Solar-Terrestrial Physics, 104 . pp. 18-28. ISSN 1364-6826 |
_version_ |
1766120167510638592 |