The influence of convergence movement on turbulent transportation in the atmospheric boundary layer |
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| Authors: | HU Yinqiao ZUO Hongchao |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000;Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020,Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000 |
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| Abstract: | Classical turbulent K closure theory of the atmospheric boundary layer assumes that the verticalturbulent transport flux of any macroscopic quantity is equivalent to that quantity's vertical gradienttransport flux. But a cross coupling between the thermodynamic processes and the dynamic processesin the atmospheric system is demonstrated based on the Curier-Prigogine principle of cross coupling oflinear thermodynamics. The vertical turbulent transportation of energy and substance in the atmosphericboundary layer is related not only to their macroscopic gradient but also to the convergence and the di-vergence movement. The transportation of the convergence or divergence movement is important for theatmospheric boundary layer of the heterogeneous underlying surface and the convection boundary layer.Based on this, the turbulent transportatiou in the atmospheric boundary layer, the energy budget of theheterogeneous underlying surface and the convection boundary layer, and the boundary layer parameteri-zation of land surface processes over the heterogeneous underlying surface are studied. This research offersclues not only for establishing the atmospheric boundary layer theory about the heterogeneous underlyingsurface, but also for overcoming the difficulties encountered recently in the application of the atmosphericboundary layer theory. |
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| Keywords: | linear thermodynamics turbulent transportation cross coupling atmospheric boundarylayer heterogeneous underlying surface |
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