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首页> 外文期刊>Industrial and organizational psychology >An urban trees parameterization for modeling microclimatic variables and thermal comfort conditions at street level with the Town Energy Balance model (TEB-SURFEX v8.0)
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An urban trees parameterization for modeling microclimatic variables and thermal comfort conditions at street level with the Town Energy Balance model (TEB-SURFEX v8.0)

机译：与城镇能量平衡模型（TEB-SURFEX V8.0）建模微跨度变量和街道热舒适条件的城市树木参数化

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The Town Energy Balance (TEB) urban climate model has recently been improved to more realistically address the radiative effects of trees within the urban canopy. These processes necessarily have an impact on the energy balance that needs to be taken into account. This is why a new method for calculating the turbulent fluxes for sensible and latent heat has been implemented. This method remains consistent with the "bigleaf" approach of the Interaction Soil-Biosphere-Atmosphere (ISBA) model, which deals with energy exchanges between vegetation and atmosphere within TEB. Nonetheless, the turbulent fluxes can now be dissociated between ground-based natural covers and the tree stratum above (knowing the vertical leaf density profile), which can modify the vertical profile in air temperature and humidity in the urban canopy. In addition, the aeraulic effect of trees is added, parameterized as a drag term and an energy dissipation term in the evolution equations of momentum and turbulent kinetic energy, respectively. This set of modifications relating to the explicit representation of the tree stratum in TEB is evaluated on an experimental case study. The model results are compared to micrometeorological and surface temperature measurements collected in a semi-open courtyard with trees and bordered by buildings. The new parameterizations improve the modeling of surface temperatures of walls and pavements, thanks to taking into account radiation absorption by trees, and of air temperature. The effect of wind speed being strongly slowed down by trees is also much more realistic. The universal thermal climate index diagnosed in TEB from inside-canyon environmental variables is highly dependent and sensitive to these variations in wind speed and radiation. This demonstrates the importance of properly modeling interactions between buildings and trees in urban environments, especially for climate-sensitive design issues.
机译：最近已经改进了城镇能量平衡（TEB）城市气候模型，以更新地解决城市树冠内树木的辐射效应。这些过程一定对需要考虑的能量平衡产生影响。这就是为什么已经实施了用于计算湍流通量的新方法的用于显性和潜热的方法。该方法仍然与相互作用土壤 - 生物圈 - 气氛（ISBA）模型的“Bigleaf”方法一致，这涉及TEB内植被和大气之间的能量交换。尽管如此，湍流助熔剂现在可以在基于地面的自然覆盖物和上面的树层之间解离（知道垂直叶密度剖面），这可以改变城市树冠的空气温度和湿度中的垂直轮廓。此外，分别在动量和湍流动能的演化方程中添加了树木的一定程度和能量耗散术语的缩小术和能量耗散术语。在实验案例研究中评估了与TEB中树立阶显式表示有关的这组修改。将模型结果与在半露庭院中收集的微度和表面温度测量与树木和建筑物接壤。新的参数化改善了墙壁和路面表面温度的建模，因为考虑到树木和空气温度。风速强烈减慢树木的影响也更加逼真。诊断在TEB中，从内峡谷环境变量诊断的通用热气候指数高度依赖，对风速和辐射的这些变化敏感。这证明了建筑物与城市环境之间建筑物与树木之间相互作用的重要性，特别是对于气候敏感的设计问题。

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