Integration of a Building Energy Model in an Urban Climate Model and its Application
Integration of a Building Energy Model in an Urban Climate Model and its Application
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DOI：
10.1007/s10546-020-00569-y
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发表时间：
2020-09-20
影响因子：
4.3
通讯作者：
Schneider, Christoph
中科院分区：
文献类型：
--
作者：
Jin, Luxi;Schubert, Sebastian;Schneider, Christoph
我们报告的能力，城市冠层模式，再加上区域气候模式，模拟能量通量，城市内的空气温度变化，城市热岛特征，室内温度变化，以及人为热排放，在柏林，德国。在双峡谷效应参数化模式中引入建筑物能耗模式，并与中尺度气候模式COSMO-CLM（CONCHRONMESFOR SMALL-SCALE MODELLING IN CLIMATE MODE）耦合，考虑建筑物内的热量产生，计算建筑物与城市大气之间的热量传递。增强型耦合城市模型应用于2018年柏林冬季和夏季的两个24天持续时间的模拟，使用缩小的再分析数据，最终网格间距为1 km。模型的结果进行评估与观测的辐射和湍流能量通量，2米的空气温度，室内空气温度。评价结果表明，改进后的模式较好地再现了观测到的湍流热通量的日变化特征，并对冬季2 m气温和城市热岛的模拟结果有了较大的改善。我们的设置还估计了冬季能源消耗的时空变化，由于加热与峡谷几何形状。只有在对建筑物和街道宽度应用相同的网格单元值后，将郊区站点与城市站点进行比较时，才能明显看出城市热岛效应带来的节能潜力。在夏季，该模型逼真地再现了室内空气温度及其时间变化。
We report the ability of an urban canopy model, coupled with a regional climate model, to simulate energy fluxes, the intra-urban variability of air temperature, urban-heat-island characteristics, indoor temperature variation, as well as anthropogenic heat emissions, in Berlin, Germany. A building energy model is implemented into the Double Canyon Effect Parametrization, which is coupled with the mesoscale climate model COSMO-CLM (COnsortium for Small-scale MOdelling in CLimate Mode) and takes into account heat generation within buildings and calculates the heat transfer between buildings and the urban atmosphere. The enhanced coupled urban model is applied in two simulations of 24-day duration for a winter and a summer period in 2018 in Berlin, using downscaled reanalysis data to a final grid spacing of 1 km. Model results are evaluated with observations of radiative and turbulent energy fluxes, 2-m air temperature, and indoor air temperature. The evaluation indicates that the improved model reproduces the diurnal characteristics of the observed turbulent heat fluxes, and considerably improves the simulated 2-m air temperature and urban heat island in winter, compared with the simulation without the building energy model. Our set-up also estimates the spatio-temporal variation of wintertime energy consumption due to heating with canyon geometry. The potential to save energy due to the urban heat island only becomes evident when comparing a suburban site with an urban site after applying the same grid-cell values for building and street widths. In summer, the model realistically reproduces the indoor air temperature and its temporal variation.