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Influence of tropical cyclone 'AILA' on atmospheric surface layer turbulence and fluxes at Ranchi during its landfall

Murthy, BS and Latha, R and Kumar, M (2014) Influence of tropical cyclone 'AILA' on atmospheric surface layer turbulence and fluxes at Ranchi during its landfall. Atmospheric Science Letters, 15 (1). pp. 72-78.

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Abstract

Surface layer turbulent fluxes and normalized wind spectra at Ranchi, India during the landfall of severe cyclonic storm 'AILA' are compared with the fair weather spectra. Spectral peaks are shifted to lower frequencies as AILA crosses the coast. Dominant eddy sizes after the landfall are observed to be much higher than those before the landfall especially for u component. Spectral energy during the passage of synoptic disturbance in the vicinity is lesser than that of Kaimal's spectrum owing to mismatch of empirical constant over tropics. Mean vertical velocity is positive (negative) before (after) the landfall, indicating dominance of updrafts (downdrafts).

Item Type: Article
Additional Information: Copyright of this article belongs to Royal Meteorological Society.
Uncontrolled Keywords: atmospheric motion; eddy; storm; tropical cyclone; turbulence; wind velocity, India; Jharkhand; Ranchi
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 28 Nov 2014 09:55
Last Modified: 28 Nov 2014 09:55
URI: http://moeseprints.incois.gov.in/id/eprint/942

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