Evaluation of the Simple Urban Energy Balance Model Using Selected Data from 1-yr Flux Observations at Two Cities
Evaluation of the Simple Urban Energy Balance Model Using Selected Data from 1-yr Flux Observations at Two Cities
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DOI：
10.1175/2008jamc1891.1
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发表时间：
2009-04
影响因子：
3
通讯作者：
T. Kawai;M. K. Ridwan;M. Kanda
中科院分区：
文献类型：
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作者：
T. Kawai;M. K. Ridwan;M. Kanda
摘要作者的目标是将用于中尺度模拟的简单城市能量平衡模式(SUMM)应用于城市。数据选自在两个城市的三个站点进行的一年通量观测：一个站点在日本库加原(Ku)，两个站点在瑞士巴塞尔(U1和U2)。将该模型应用于植被覆盖的城市，实现了一个简单的植被方案，并对地表能量平衡和辐射温度进行了评估。SUM基本上再现了Ku和U2的地表能量平衡和Tr的季节和日变化趋势，而U1的感热通量QH和储热ΔQs的白天结果误差较大。总体而言，白天低估QH而高估ΔQS和TR是很常见的。造成这些误差的部分原因是动热粗糙度比的自然对数(κB−1)参数化不佳，即在植被覆盖的城市观测到的κB−1值小于模拟值。那个.。
Abstract The authors’ objective was to apply the Simple Urban Energy Balance Model for Mesoscale Simulation (SUMM) to cities. Data were selected from 1-yr flux observations conducted at three sites in two cities: one site in Kugahara, Japan (Ku), and two sites in Basel, Switzerland (U1 and U2). A simple vegetation scheme was implemented in SUMM to apply the model to vegetated cities, and the surface energy balance and radiative temperature TR were evaluated. SUMM generally reproduced seasonal and diurnal trends of surface energy balance and TR at Ku and U2, whereas relatively large errors were obtained for the daytime results of sensible heat flux QH and heat storage ΔQS at U1. Overall, daytime underestimations of QH and overestimations of ΔQS and TR were common. These errors were partly induced by the poor parameterization of the natural logarithm of the ratio of roughness length for momentum to heat (κB−1); that is, the observed κB−1 values at vegetated cities were smaller than the simulated values. The...