Abstract
Turbulent surface energy exchanges from land–air interface play an important role in generation and enhancing the convection. During pre-monsoon months (April–May) thunderstorms generate over Chota Nagpur plateau area of NE India and move over the study area Ranchi (23°25′N, 85°26′E). Even though convective conditions prevail over Ranchi during these months, thunderstorm occurs on some days only. To address this important aspect, present study focuses on understanding of surface energy budget (SEB): partitioning of net solar radiation flux (QN) into sensible (QH), latent heat (QE) and soil heat fluxes during different epochs of thunderstorm activity over study site at Ranchi. For this purpose, micro-meteorological data sets which comprise of fast response turbulent measurements and slow response data during 2008, 2009 and 2010 over Ranchi are used. A total of 25 thunderstorm cases are selected for the present study. The study reveals that prior to the occurrence of thunderstorm the QH and QE fluxes reach the same order followed by soil heat flux (QG). No significant variation of soil heat (QG) flux is noticed between thunderstorm days and non-thunderstorm days. The variations in the partitioning of QN flux into QH, QE and QG fluxes are distinguishable between the days of thunderstorm (TD) and non-thunderstorm (NTD). This variation can be used as precursor signal for the occurrence of thunderstorm activity. The results emanated from the present work are important in validating the performance of the meso-scale models in simulating these storms.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Atmospheric and Solar-Terrestrial Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
