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The Influence of Convergence Movement on Turbulent Transportation in the Atmospheric Boundary Layer 被引量:15
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作者 胡隐樵 左洪超 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2003年第5期794-798,共5页
Classical turbulent K closure theory of the atmospheric boundary layer assumes that the vertical turbulent transport flux of any macroscopic quantity is equivalent to that quantity's vertical gradient transport fl... Classical turbulent K closure theory of the atmospheric boundary layer assumes that the vertical turbulent transport flux of any macroscopic quantity is equivalent to that quantity's vertical gradient transport flux. But a cross coupling between the thermodynamic processes and the dynamic processes in the atmospheric system is demonstrated based on the Curier-Prigogine principle of cross coupling of linear thermodynamics. The vertical turbulent transportation of energy and substance in the atmospheric boundary layer is related not only to their macroscopic gradient but also to the convergence and the divergence movement. The transportation of the convergence or divergence movement is important for the atmospheric boundary layer of the heterogeneous underlying surface and the convection boundary layer. Based on this, the turbulent transportation in the atmospheric boundary layer, the energy budget of the heterogeneous underlying surface and the convection boundary layer, and the boundary layer parameterization of land surface processes over the heterogeneous underlying surface are studied. This research offers clues not only for establishing the atmospheric boundary layer theory about the heterogeneous underlying surface, but also for overcoming the difficulties encountered recently in the application of the atmospheric boundary layer theory. 展开更多
关键词 linear thermodynamics turbulent transportation cross coupling atmospheric boundary layer heterogeneous underlying surface
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干旱区农田下垫面kB^(-1)变化特征及参数化 被引量:2
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作者 王晓霞 左洪超 +4 位作者 陈继伟 武建军 郭阳 杨彦龙 陈伯龙 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 2015年第4期508-516,共9页
利用古浪非均匀近地层观测试验中农田下垫面的湍流观测数据,计算了其附加阻尼k B-1,并对其变化特征进行了分析,之后通过对k B-1影响因子的分析,发展了一种适用于干旱区农田下垫面的k B-1参数化方案W14,最后对W14在平坦戈壁下垫面上的适... 利用古浪非均匀近地层观测试验中农田下垫面的湍流观测数据,计算了其附加阻尼k B-1,并对其变化特征进行了分析,之后通过对k B-1影响因子的分析,发展了一种适用于干旱区农田下垫面的k B-1参数化方案W14,最后对W14在平坦戈壁下垫面上的适用性进行了检验.结果表明:农田下垫面k B-1日均值随着叶面积指数的增大有线性减小的趋势,k B-1的日变化随着叶面积指数的增大而变得更加明显.k B-1受地表特征叶面积指数、动力学因子Re*和热力学因子θs-θa的综合影响.基于这些影响因子所发展的W14在干旱区农田下垫面上计算的感热通量精度高,优于已有参数化方案的计算精度.并且W14在平坦戈壁下垫面也有一定的适用性. 展开更多
关键词 附加阻尼 参数化 干旱区 古浪野外试验
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