Comment on egusphere-2023-482

Abstract

<strong class="journal-contentHeaderColor">Abstract.</strong> In the field of geoscience, the meso-scale tool to conduct weather forecast, which is also termed as Numerical Weather Prediction (NWP) package, is commonly used for simulating the urban boundary layer in the scale of 1 km~100 km. In the field of wind engineering, the Computational Fluid Dynamic (CFD) simulation tool is most popular for investigating the urban wind environment at the scale of 1 m~1 km. In the present study, a novel framework, named WOCSS with the version v1.0, combing the meso-scale NWP package of the Weather Research and Forecast (WRF) model and the micro-scale OpenFOAM code is introduced thanks to an open-source package of PreCICE. In detail, PreCICE realizes the trans-scale simulation of the urban wind environment through one-way nesting of porting the meso-scale simulation results to the boundaries of the micro-scale simulation. To this end, the adaptions made to the open-sourced codes of WRF and OpenFOAM are articulated, which fulfil the information exchanges between WRF and OpenFOAM via PreCICE library. A case study concerning the urban wind environment in a residential quarter in Shenzhen, China is conducted using WOCSS V1.0. The case study demonstrates that the proposed framework successfully presents the detailed wind environment inside the residential quarter under realistic meteorological condition.