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2000•Chinese Journal of GeophysicsRequires access

STUDY ON THE WIND PROFILES AND TURBULENT STRUCTURE IN THE BAROCLINIC CONVECTIVE BOUNDARY LAYER

Mingyu Zhou

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Abstract

Based on the data of STORM-FEST (STorm-scale Operational and Research Meteorology-Front Experiment System Test) carried out near the boundary of Kansas and Nebraska, U. S. in 1992, the vertical distribution of temperature, humidity and wind velocity in the baroclinic convective boundary layer was analysed. The results show that the temperature and humidity were well mixed in the convective boundary layer. The wind velocity was also well mixed, but there exists wind shear sometime. Under conditions with and without wind shear the turbulent kinetic energy budget was calculated. The possible reasons of wind shear formation in the convective boundary layer were discussed.

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What this paper is about

Based on the data of STORM-FEST (STorm-scale Operational and Research Meteorology-Front Experiment System Test) carried out near the boundary of Kansas and Nebraska, U. S. in 1992, the vertical distribution of temperature, humidity and wind velocity in the baroclinic convective boundary layer was analysed. The results show that the temperature and humidity were well mixed in the convective boundary layer. The wind velocity was also well mixed, but there exists wind shear sometime. Under conditions with and without wind shear the turbulent kinetic energy budget was calculated. The possible reasons of wind shear formation in the convective boundary layer were discussed.

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Available abstract

Based on the data of STORM-FEST (STorm-scale Operational and Research Meteorology-Front Experiment System Test) carried out near the boundary of Kansas and Nebraska, U. S. in 1992, the vertical distribution of temperature, humidity and wind velocity in the baroclinic convective boundary layer was analysed. The results show that the temperature and humidity were well mixed in the convective boundary layer. The wind velocity was also well mixed, but there exists wind shear sometime. Under conditions with and without wind shear the turbulent kinetic energy budget was calculated. The possible reasons of wind shear formation in the convective boundary layer were discussed.

Key concepts: Baroclinity, Wind shear, Convective Boundary Layer, Boundary layer, Thermal wind, Meteorology, Turbulence kinetic energy, Wind profile power law

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