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Assessment of turbulent kinetic energy budget and boundary layer characteristics during pre-monsoon thunderstorm season over Ranchi

Assessment of turbulent kinetic energy budget and boundary layer characteristics during... Abstract In the present work turbulent kinetic energy (TKE) budget and boundary layer characteristics are studied for an Indian tropical station Ranchi (23°25N, 85°26E), situated over Chota Nagpur plateau. The pre-monsoon months (March-May) data for years 2008–2010 has been used in the present study which is the period of severe thunderstorm over the North East India. TKE budget terms, dissipation rates, and normalized standard deviations of wind and temperature along with skewness of temperature have been analyzed to find out characteristic difference between days of thunderstorm and days of clear weather. Present study brought out significant variations in the turbulence transportation between the days of thunderstorm activity to that of fair weather days. Site and season specific relationships normalized standard deviations of wind and temperature with atmospheric stability during pre-monsoon thunderstorm and non thunderstorm days over Ranchi are proposed. One of the important outcomes of the study is proposing site specific relationships between TKE dissipation rates with respect to atmospheric stability. These results are useful in validating the mesoscale simulations of thunderstorm activity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Asia-Pacific Journal of Atmospheric Sciences" Springer Journals

Assessment of turbulent kinetic energy budget and boundary layer characteristics during pre-monsoon thunderstorm season over Ranchi

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References (80)

Publisher
Springer Journals
Copyright
2013 Korean Meteorological Society and Springer Science+Business Media Dordrecht
ISSN
1976-7633
eISSN
1976-7951
DOI
10.1007/s13143-013-0052-8
Publisher site
See Article on Publisher Site

Abstract

Abstract In the present work turbulent kinetic energy (TKE) budget and boundary layer characteristics are studied for an Indian tropical station Ranchi (23°25N, 85°26E), situated over Chota Nagpur plateau. The pre-monsoon months (March-May) data for years 2008–2010 has been used in the present study which is the period of severe thunderstorm over the North East India. TKE budget terms, dissipation rates, and normalized standard deviations of wind and temperature along with skewness of temperature have been analyzed to find out characteristic difference between days of thunderstorm and days of clear weather. Present study brought out significant variations in the turbulence transportation between the days of thunderstorm activity to that of fair weather days. Site and season specific relationships normalized standard deviations of wind and temperature with atmospheric stability during pre-monsoon thunderstorm and non thunderstorm days over Ranchi are proposed. One of the important outcomes of the study is proposing site specific relationships between TKE dissipation rates with respect to atmospheric stability. These results are useful in validating the mesoscale simulations of thunderstorm activity.

Journal

"Asia-Pacific Journal of Atmospheric Sciences"Springer Journals

Published: Nov 1, 2013

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