Measurements of positive ions and air-Earth current density at Maitri, Antarctica
Simultaneous measurements of the small-, intermediate- and large- positive ions and air earth current density made at a coastal station, Maitri at Antarctica during January to February 2005, are reported. Although, small and large positive ion concentrations do not show any systematic diurnal variat...
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American Geophysical Union
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ftmoes:oai:moeseprints.incois.gov.in:1885 2023-05-15T13:34:17+02:00 Measurements of positive ions and air-Earth current density at Maitri, Antarctica Siingh, D Pant, V Kamra, AK 2007-07 application/pdf http://moeseprints.incois.gov.in/1885/ http://moeseprints.incois.gov.in/1885/1/Measurements%20of%20positive%20ions.pdf http://onlinelibrary.wiley.com/doi/10.1029/2006JD008101/abstract en eng American Geophysical Union http://moeseprints.incois.gov.in/1885/1/Measurements%20of%20positive%20ions.pdf Siingh, D and Pant, V and Kamra, AK (2007) Measurements of positive ions and air-Earth current density at Maitri, Antarctica. Journal of Geophysical Research: Atmospheres, 112 (13). Meteorology and Climatology Article PeerReviewed 2007 ftmoes 2022-01-12T07:33:37Z Simultaneous measurements of the small-, intermediate- and large- positive ions and air earth current density made at a coastal station, Maitri at Antarctica during January to February 2005, are reported. Although, small and large positive ion concentrations do not show any systematic diurnal variations, variations in them are almost similar to each other. On the other hand, variations in intermediate positive ion concentrations are independent of variations in the small/large positive ions and exhibit a diurnal variation which is similar to that in atmospheric temperature on fair weather days with a maximum during the day and minimum during the night hours. No such diurnal variation in intermediate positive ion concentration is observed on cloudy days when variations in them are also similar to those insmall/large positive ion concentrations. Magnitude of diurnal variation in intermediate positive ion concentration on fair weather days increases with the lowering of atmospheric temperature in this season. Scavenging of ions by snowfall and trapping of Alha - rays from the ground radioactivity by a thin layer of snow on ground, is demonstrated from observations. Variations in intermediate positive ion concentration are explained on the basis of the formation of new particles by the photolytic nucleation process. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Ministry of Earth Sciences, Government of India: Open Access Digital Repository Maitri ENVELOPE(11.733,11.733,-70.764,-70.764) |
institution |
Open Polar |
collection |
Ministry of Earth Sciences, Government of India: Open Access Digital Repository |
op_collection_id |
ftmoes |
language |
English |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Siingh, D Pant, V Kamra, AK Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
topic_facet |
Meteorology and Climatology |
description |
Simultaneous measurements of the small-, intermediate- and large- positive ions and air earth current density made at a coastal station, Maitri at Antarctica during January to February 2005, are reported. Although, small and large positive ion concentrations do not show any systematic diurnal variations, variations in them are almost similar to each other. On the other hand, variations in intermediate positive ion concentrations are independent of variations in the small/large positive ions and exhibit a diurnal variation which is similar to that in atmospheric temperature on fair weather days with a maximum during the day and minimum during the night hours. No such diurnal variation in intermediate positive ion concentration is observed on cloudy days when variations in them are also similar to those insmall/large positive ion concentrations. Magnitude of diurnal variation in intermediate positive ion concentration on fair weather days increases with the lowering of atmospheric temperature in this season. Scavenging of ions by snowfall and trapping of Alha - rays from the ground radioactivity by a thin layer of snow on ground, is demonstrated from observations. Variations in intermediate positive ion concentration are explained on the basis of the formation of new particles by the photolytic nucleation process. |
format |
Article in Journal/Newspaper |
author |
Siingh, D Pant, V Kamra, AK |
author_facet |
Siingh, D Pant, V Kamra, AK |
author_sort |
Siingh, D |
title |
Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
title_short |
Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
title_full |
Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
title_fullStr |
Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
title_full_unstemmed |
Measurements of positive ions and air-Earth current density at Maitri, Antarctica |
title_sort |
measurements of positive ions and air-earth current density at maitri, antarctica |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
http://moeseprints.incois.gov.in/1885/ http://moeseprints.incois.gov.in/1885/1/Measurements%20of%20positive%20ions.pdf http://onlinelibrary.wiley.com/doi/10.1029/2006JD008101/abstract |
long_lat |
ENVELOPE(11.733,11.733,-70.764,-70.764) |
geographic |
Maitri |
geographic_facet |
Maitri |
genre |
Antarc* Antarctica Antarctica Journal |
genre_facet |
Antarc* Antarctica Antarctica Journal |
op_relation |
http://moeseprints.incois.gov.in/1885/1/Measurements%20of%20positive%20ions.pdf Siingh, D and Pant, V and Kamra, AK (2007) Measurements of positive ions and air-Earth current density at Maitri, Antarctica. Journal of Geophysical Research: Atmospheres, 112 (13). |
_version_ |
1766051324781133824 |