SLUCM-BEM: a parameterisation for dynamic anthropogenic heat and electricity consumption for WRF-Urban

<p>Here we propose a new parameterisation SLUCM-BEM: a simple dynamic anthropogenic heat (Q_F) parameterisation for WRF-Urban (e.g. single-layer urban canopy model [SLUCM, Kusaka et al. 2001]). The SLUCM is a remarkable physical-based urban canopy model widely used worldwide. However, the SLUCM has two limitations: (1) it only considers a static constant diurnal pattern of Q_F, and (2) it does not conserve heat balance within the urban canopy space because the building behaves as a heat sink. To solve these limitations, based on the concept of a building energy model (BEM [e.g. Kikegawa et al. 2003), which has been officially introduced in WRF (Salamanca et al. 2010), we propose a parameterisation to simulate the Q_F dynamically and simply from buildings, by the physical calculation of indoor heat load and using input parameters for BEM and SLUCM. This allows the model users to simulate the dynamic Q_F and electricity consumption (EC) according to outdoor temperature changes, building insulation, air conditioning (AC) performance, etc. by simply setting the "ahoption" in URBPRAM.TBL to "2". The results show that the SLUCM-BEM could reasonably reproduce the Q_F estimated by a more sophisticated BEM (Kikegawa et al. 2003) and observed EC (Nakajima et al. 2022) in the world's largest metropolis Tokyo. The SLUCM-BEM can be applied to urban climates worldwide.</p> <p>Kikegawa, Y. et al., 2003, Appl. Energy, 76, 449-466.</p> <p>Kusaka, H. et al., 2001, Bound.-Layer Meteorol., 101, 329-358.</p> <p>Nakajima, K. et al., 2022, Energy Build., 256, 111729.</p> <p>Salamanca, F. et al., 2010, Theor. Appl. Climatol., 99, 331-344.</p>