气象学报（英文版）2022，Vol.36Issue(6)：900-913,中插27-中插59,47.
引入反映建筑物特征的土地利用数据对城市气象模拟的影响-以上海一次高温天气过程为例?
Effect of Using Land Use Data with Building Characteristics on Urban Weather Simulations:A High Temperature Event in Shanghai
摘要
Abstract
Land use data with building characteristics are important for modeling the impacts of urban morphology on local climate. In this study, an extreme heat event in Shanghai, China, was simulated by using a WRF/BEP + BEM (Weather Research and Forecasting/Building Effect Parameterization + Building Energy Model) model. We incor-porated local climate zone (LCZ) land use data that resolved urban morphology using 10 classes of building paramet-ers. The simulation was compared to a control case based on MODIS (Moderate-resolution Imaging Spectrora-diometer) land use data. The findings are as follows: (1) the LCZ data performed better than the MODIS data for sim-ulating 10-m wind speed. An increase in building height led to the wind speed to decrease by 0.6–1.4 m s?1 in thedaytime and by 0.2–0.7 m s?1 at nighttime. (2) High-rise buildings warmed the air by trapping radiation in the urban canyon. This warming effect was partially offset by the cooling effect of building shadows in the day. As a result, the 2-m temperature increased by 0.8°C at night but only by 0.4°C during the day. (3) Heterogeneous urban surfaces in-creased the 50-m turbulent kinetic energy by 0.4 m2 s?2, decreased the 10-m wind speed by 1.8 m s?1 in the daytime, increased the surface net radiation by 45.1 W m?2, and increased the 2-m temperature by 1.5°C at nighttime. (4) The LCZ data modified the atmospheric circulation between land and ocean. The shadowing effect reduced the air tem-perature differences between land and ocean and weakened the sea breeze. Moreover, high-rise buildings obstructed sea breezes, restricting their impact to a smaller portion (10 km along the wind direction) of inland areas compared to that with MODIS.关键词
LCZ,WRF/模式,建筑物特征参数,高温Key words
local climate zone/Weather Research and Forecasting model/characteristics of building parameters/high temperature引用本文复制引用
杨大虎,王咏薇,岳彩军..引入反映建筑物特征的土地利用数据对城市气象模拟的影响-以上海一次高温天气过程为例?[J].气象学报（英文版）,2022,36(6):900-913,中插27-中插59,47.基金项目
Supported by the National Natural Science Foundation of China(41875059 and 41675016).国家自然科学基金项目(41875059)、国家自然科学基金项目(41675016) （41875059 and 41675016）
