Change search
ReferencesLink to record
Permanent link

Direct link
Coherent structures contributions in fluxes of momentum and heat at two tropical sites during pre-monsoon thunderstorm season
Stockholm University, Faculty of Science, Department of Meteorology .
2014 (English)In: International Journal of Climatology, ISSN 0899-8418, E-ISSN 1097-0088, Vol. 34, no 5, 1575-1584 p.Article in journal (Refereed) Published
Abstract [en]

An attempt has been made to differentiate percentage contribution of coherent structures (CS) in the turbulent fluxes of heat and momentum during thunderstorm days (TD) and non-thunderstorm days (NTD) at two tropical sites. Pre-monsoon months (Marcha to May) fast response data (10Hz) of wind and temperature at Kharagpur (22 degrees 30N, 87 degrees 20E) for years 2007, 2009, and 2010, and at Ranchi (23 degrees 25N, 85 degrees 26E) for years 2008-2010 have been used. The contributions were calculated after decomposing the time series using wavelet technique by two methods: (1) the method of quadrant analysis for each scale, and (2) the method of zero-crossing. Contributions of CS in momentum flux are higher in TD than NTD, whereas for heat flux CS contribution is higher for NTD to that of TD at both sites; however, values are different at both sites and by each method as well. Significant percentages of contributions of CS to the total flux are noticed at both the sites.

Place, publisher, year, edition, pages
2014. Vol. 34, no 5, 1575-1584 p.
Keyword [en]
coherent structures, heat flux, momentum flux
National Category
Meteorology and Atmospheric Sciences
URN: urn:nbn:se:su:diva-105519DOI: 10.1002/joc.3785ISI: 000333759100019OAI: diva2:728546


Available from: 2014-06-24 Created: 2014-06-24 Last updated: 2014-06-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tyagi, Bhishma
By organisation
Department of Meteorology
In the same journal
International Journal of Climatology
Meteorology and Atmospheric Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 36 hits
ReferencesLink to record
Permanent link

Direct link