Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica
A one-dimensional mathematical model for flow of katabatic winds over Schirmacher region of East Antarctica has been developed. The model is based on momentum and sensible heat transport to the ice slope surface under calm conditions. A relationship of potential air temperature with the height and e...
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ftmoes:oai:moeseprints.incois.gov.in:1891 2023-05-15T13:34:17+02:00 Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica Kumar, A Gupta, VB Dutta, HN Ghude, SD 2007-06 application/pdf http://moeseprints.incois.gov.in/1891/ http://moeseprints.incois.gov.in/1891/1/Mathematical%20modelling.pdf http://nopr.niscair.res.in/handle/123456789/2836 en eng NISCAIR http://moeseprints.incois.gov.in/1891/1/Mathematical%20modelling.pdf Kumar, A and Gupta, VB and Dutta, HN and Ghude, SD (2007) Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica. Indian Journal of Radio and Space Physics, 36 (3). pp. 204-212. Meteorology and Climatology Article PeerReviewed 2007 ftmoes 2022-01-12T07:33:37Z A one-dimensional mathematical model for flow of katabatic winds over Schirmacher region of East Antarctica has been developed. The model is based on momentum and sensible heat transport to the ice slope surface under calm conditions. A relationship of potential air temperature with the height and elevation of the reference state is suggested and used in the model. The model parameters were estimated using the measurements of surface based meteorological parameters and high resolution maps of pressure contours. The wind velocities have been computed using the model on actual terrain slope around 130° in which direction maximum katabatic flow moves towards the periphery of the continent, the ratio of mean bulk coefficients (CH/CM) and over large variations in slope angle (α), potential temperature difference between air parcel and slope surface , and slope length (l). The results suggest that the inclination angle or terrain slope and the distance at which inversion forms, control the speed of katabatic winds. At the same time, the direction of katabatic wind is controlled by the slope of the icy terrain. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ministry of Earth Sciences, Government of India: Open Access Digital Repository East Antarctica |
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 Kumar, A Gupta, VB Dutta, HN Ghude, SD Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
topic_facet |
Meteorology and Climatology |
description |
A one-dimensional mathematical model for flow of katabatic winds over Schirmacher region of East Antarctica has been developed. The model is based on momentum and sensible heat transport to the ice slope surface under calm conditions. A relationship of potential air temperature with the height and elevation of the reference state is suggested and used in the model. The model parameters were estimated using the measurements of surface based meteorological parameters and high resolution maps of pressure contours. The wind velocities have been computed using the model on actual terrain slope around 130° in which direction maximum katabatic flow moves towards the periphery of the continent, the ratio of mean bulk coefficients (CH/CM) and over large variations in slope angle (α), potential temperature difference between air parcel and slope surface , and slope length (l). The results suggest that the inclination angle or terrain slope and the distance at which inversion forms, control the speed of katabatic winds. At the same time, the direction of katabatic wind is controlled by the slope of the icy terrain. |
format |
Article in Journal/Newspaper |
author |
Kumar, A Gupta, VB Dutta, HN Ghude, SD |
author_facet |
Kumar, A Gupta, VB Dutta, HN Ghude, SD |
author_sort |
Kumar, A |
title |
Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
title_short |
Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
title_full |
Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
title_fullStr |
Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
title_full_unstemmed |
Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica |
title_sort |
mathematical modelling of katabatic winds over schirmacher region, east antarctica |
publisher |
NISCAIR |
publishDate |
2007 |
url |
http://moeseprints.incois.gov.in/1891/ http://moeseprints.incois.gov.in/1891/1/Mathematical%20modelling.pdf http://nopr.niscair.res.in/handle/123456789/2836 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
http://moeseprints.incois.gov.in/1891/1/Mathematical%20modelling.pdf Kumar, A and Gupta, VB and Dutta, HN and Ghude, SD (2007) Mathematical modelling of katabatic winds over Schirmacher region, East Antarctica. Indian Journal of Radio and Space Physics, 36 (3). pp. 204-212. |
_version_ |
1766051326740922368 |