亚马逊森林内部和上方的大气湍流
Atmospheric turbulence within and above an Amazon forest
摘要：
本文讨论了雨林冠层对大气湍流统计特征的影响。这个问题对于了解亚马逊陆地生物圈如何与大气相互作用特别有意义。为此，我们使用了基于Tsallis非广延热统计学的速度和温度差的概率密度函数模型。我们比较了理论结果与实验数据测量在一个66米的微气象塔，在雨季活动的大规模生物圈-大气实验在亚马逊河流域（LBA）。特别是，我们研究了如何影响的熵参数的值时，一个移动到树冠，或当一个通过从白天/不稳定到夜间/稳定的条件。我们表明，这种新方法提供了有趣的见解湍流在一个复杂的环境，如亚马逊森林。
英文摘要：
In this paper, we discuss the impact of a rain forest canopy on the statistical characteristics of atmospheric turbulence. This issue is of particular interest for understanding on how the Amazon terrestrial biosphere interact with the atmosphere. For this, we used a probability density function model of velocity and temperature differences based on Tsallis' non-extensive thermostatistics. We compared theoretical results with experimental data measured in a 66 m micrometeorological tower, during the wet-season campaign of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). Particularly, we investigated how the value of the entropic parameter is affected when one moves into the canopy, or when one passes from day/unstable to night/stable conditions. We show that this new approach provides interesting insights on turbulence in a complex environment such as the Amazon forest.
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