Addition of Multilayer Urban Canopy Models to a Nonlocal Planetary Boundary Layer Parameterization and Evaluation Using Ideal and Real Cases
Addition of Multilayer Urban Canopy Models to a Nonlocal Planetary Boundary Layer Parameterization and Evaluation Using Ideal and Real Cases
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DOI：
10.1175/jamc-d-19-0142.1
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发表时间：
2020-08
影响因子：
3
通讯作者：
E. Hendricks;J. Knievel;Yi Wang
中科院分区：
文献类型：
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作者：
E. Hendricks;J. Knievel;Yi Wang
将多层城市冠层模型（UCMs）建筑效应参数化（BEP）和BEP +建筑能量模型（BEM； BEP中集成的建筑能量模型）添加到延世大学（YSU）天气研究与预报（WRF）模型的行星边界层（PBL）参数化中。增加的部分允许在非局部封闭方案中首次分析建筑物对城市边界层的详细影响。将改进的YSU PBL参数化与其他预测湍流动力学（TKE）的1.5阶局部PBL参数化、mellor - yamada - janjiki和bougault - lacarerre进行了理想和实际情况的比较。理想情况评估证实，BEP和BEP+BEM在YSU PBL参数化中产生了预期的结果，因为模拟在质量上类似于基于tke的PBL参数化，其中多层ucm已经存在很长时间了。对改进后的YSU PBL参数化方法进行了验证。与理想情况类似，当UCM保持固定时，不同的UCM（简单批量方案、BEP和BEP+BEM）之间的差异比不同的PBL参数化之间的差异更大。基于对城市近地面风和温度观测的评价，对于每个PBL参数化，BEP和BEP+BEM模拟都优于简单的批量方案。
The multilayer urban canopy models (UCMs) building effect parameterization (BEP) and BEP + building energy model (BEM; a building energy model integrated in BEP) are added to the Yonsei University (YSU) planetary boundary layer (PBL) parameterization in the Weather Research and Forecasting (WRF) Model. The additions allow for the first analysis of the detailed effects of buildings on the urban boundary layer in a nonlocal closure scheme. The modified YSU PBL parameterization is compared with the other 1.5-order local PBL parameterizations that predict turbulent kinetic energy (TKE), Mellor–Yamada–Janjić and Bougeault–Lacarerre, using both ideal and real cases. The ideal-case evaluation confirms that BEP and BEP+BEM produce the expected results in the YSU PBL parameterization because the simulations are qualitatively similar to the TKE-based PBL parameterizations in which the multilayer UCMs have long existed. The modified YSU PBL parameterization is further evaluated for a real case. Similar to the ideal case, there are larger differences among the different UCMs (simple bulk scheme, BEP, and BEP+BEM) than across the PBL parameterizations when the UCM is held fixed. Based on evaluation against urban near-surface wind and temperature observations for this case, the BEP and BEP+BEM simulations are superior to the simple bulk scheme for each PBL parameterization.