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Characteristics of turbulence in the atmospheric surface layer over a complex terrain

Murthy, BS and Dharmaraj, T (2001) Characteristics of turbulence in the atmospheric surface layer over a complex terrain. Indian Journal of Radio and Space Physics, 30 (5). pp. 260-265.

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Abstract

Measurements of fluctuating wind components and temperature have been made in the atmospheric surface layer over a complex terrain in the campus of the Indian Institute of Tropical Meteorology, Pune, using sonic anemorneter at 5.2 m above the surface. Characteristics of turbulence, i.e. spectra of wind velocity components and turbulence statistics of wind are presented. The peak of normalized w-spectrum over a complex terrain for near-neutral condition was found to be ~ 0.6 as compared to ~ 0.4 over homogeneous terrain. The non-dimensional frequency maximum for w-component spectrum was observed to be 0.9 as compared to ~ 0.5 over homogeneous terrain. Empirical formulae for standard deviation of velocity components have been tested against observations over hilly terrain. Vertical flux of turbulence kinetic energy as a function of stability is also discussed

Item Type: Article
Additional Information: Copyright of this article belongs to NISCAIR
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 11 Mar 2015 06:03
Last Modified: 11 Mar 2015 06:03
URI: http://moeseprints.incois.gov.in/id/eprint/1565

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