水力发电学报2023，Vol.42Issue(12)：1-13,13.DOI:10.11660/slfdxb.20231201
粤港澳大湾区极端降水的气温响应结构研究
Temperature response structure of precipitation extremes in Guangdong-Hong Kong-Macao Greater Bay Area
摘要
Abstract
The analysis of the response structure of extreme precipitation to temperature(P-T relationship)under urbanization is helpful to develop measures to reduce the risk associated with extreme weather in urban areas.Based on the site observation data of temperature and precipitation in Guangdong-Hong Kong-Macao Greater Bay Area(GBA)from 1970 to 2019,the long-term evolution structure of extreme temperature and precipitation in GBA was analyzed,and the response structure of extreme precipitation with different thresholds to the temperature of the previous 1-day(T1)and the temperature of the previous 9-day(T1-9)was constructed by using the binning scaling function.The influence of urbanization on the P-T relationship was also explored.The results show that the P-T relationship of GBA generally shows a peak-like structure with the increase of temperature,and the extreme precipitation intensity increases first and then decreases.The breaking temperature is about 25℃.This structure is formed by the limited influence of water vapor at high temperature.The P-T1 relationship in urban areas is affected by typhoons,which the extreme precipitation intensity increases again when T1 is higher than 30℃.Urban areas of extreme precipitation intensity average scaling rate(8.0%/℃～12.5%/℃)not only higher than the suburbs(6.3%/℃～8.7%/℃),and also more than the theory scaling rate(7%/℃).关键词
城市化/Clausius-Clapeyron方程/极端降水/气温/粤港澳大湾区Key words
urbanization/Clausius-Clapeyron equation/extreme precipitation/temperature/GBA分类
天文与地球科学引用本文复制引用
陈晓宏,罗佳颖,罗丹..粤港澳大湾区极端降水的气温响应结构研究[J].水力发电学报,2023,42(12):1-13,13.基金项目
国家重点研发计划项目(2021YFC3001000) （2021YFC3001000）
国家自然科学基金项目(U1911204 （）
51861125203) （）
