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Aerodynamic drag coefficient and roughness length for three seasons over a tropical western Indian station

Patil, MN (2006) Aerodynamic drag coefficient and roughness length for three seasons over a tropical western Indian station. Atmospheric Research, 80 (4). pp. 280-293.

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Abstract

Land Surface Processes Experiment (LASPEX) was conducted over semi-arid region of western India in 1997. As a part of this program, wind and temperature observations were taken using slow as well as fast response sensors over a semi-arid station Anand (22°35′N, 72°55′E) situated in Gujarat state of India. Turbulent parameters such as drag coefficient and sensible heat flux were estimated using eddy correlation method and aerodynamic roughness length was estimated using wind profiles. The analysis has been carried out for the data representing summer, monsoon and winter seasons. It was found that the wind speed does not exceed 5 ms− 1 during the observational period considered in this study. Relationship of aerodynamic drag coefficient and roughness length with wind speed and stability has been investigated. Aerodynamic roughness length was greater in the stable conditions when the wind speed was low and it reduced drastically during convective conditions. The resulting values of aerodynamic roughness length and drag coefficient for the monsoon period agree well with values reported in literature over Indian subcontinent for homogeneous grass covered surfaces

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier.
Uncontrolled Keywords: Atmospheric temperature; Climate change; Drag; Heat flux; Wind, Aerodynamic drag coefficient; Aerodynamic roughness; Eddy correlation method; Land surface processes experiment; Monsoon; Summer; Winter, Aerodynamics, aerodynamics; drag coefficient; regional climate; semiarid region; sensible heat flux; wind velocity, Asia; Eurasia; India; South Asia
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 18 Dec 2014 11:07
Last Modified: 18 Dec 2014 11:07
URI: http://moeseprints.incois.gov.in/id/eprint/1947

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