Abstract:In this study, the impacts of anthropogenic heat (AH) emission on the heat wave events in Guangzhou was investigated. First, an AH emission database was built with the energy inventory method in the year of 2009, 2000, and 1990 based on energy consumption statistics of industry, transportation and domestic energy in the corresponding year. Then, three heat wave events occurred in 2005, 2012 and 2017 in Guangzhou were simulated using weather research and forecasting model (WRF), under different land-use and AH emission conditions (from 2009, 2000 and 1990 respectively). The impacts of AH on heat waves in different decades can thus be estimated. The results show that WRF can well replicate the 2m temperature and urban heat island effects in Guangzhou during the heat wave events. The maximum temperature was originally underestimated without the input of AH. With AH, the estimate of the maximum temperature was improved. Specifically, in the case of simulating 2012 heat wave event, 2m temperature in the urban area increased by 0.53℃, 0.44℃ and 0.13℃ respectively when we superimposed AH conditions in 2009, 2000 and 1990. The intensity of urban heat island effects also increased by 0.43℃, 0.38℃ and 0.13℃ respectively. Moreover, simulation results from all the three heat wave cases indicated that the variations of 2m temperature and unban heat island intensity in night time were more substantial, although the AH emissions were stronger in the day time.
于玲玲, 潘蔚娟, 肖志祥, 王子谦, 麦健华. 人为热对广州高温天气影响的数值模拟个例分析[J]. 中国环境科学, 2020, 40(9): 3721-3730.
YU Ling-ling, PAN Wei-juan, XIAO Zhi-xiang, WANG Zi-qian, MAI Jian-hua. Case studies of impacts of anthropogenic heat emissions on heat wave events in Guangzhou. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(9): 3721-3730.
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