中国海洋大学学报（自然科学版）2025，Vol.55Issue(3)：1-12,12.DOI:10.16441/j.cnki.hdxb.20240055
2019年超强台风"利奇马"外雨带降水精细结构分析
Analysis of Fine Structure of Precipitation in Outer Rainbands of Super Typhoon Lekima in 2019
摘要
Abstract
Based on the precipitation data of high spatial and temporal resolution on the ground in China,the precipitation characteristics generated by the outer rainband of typhoon Lekima in the coastal areas of Zhejiang during its landfalling were analyzed.The results showed that the cumulative precipitation,minute rain intensity and process precipitation in the precipitation process in Zhejiang under the influence of the outer rainband of typhoon Lekima showed significant extremes,and the heavy precipitation center showed a zonal distribution.It has obvious non-uniformity in space and time.At the same time,the precipitation showed a variety of scale fluctuation characteristics,and the wave signal with a period of 128 to 192 min ran through the whole precipitation process.The outer rainband is mainly located in front of the typhoon moving direction,and the precipitation fluctuation characteristics are different at different locations.The wavelet power spectrum of precipitation at the outer edge of the rainband shows two obvious large value centers,that is,in addition to the periodic signal of 128～192 min,there is also a quasi-periodic wave characteristic of 16～64 min.In addition to the periodic 128～256 min wave signal,there are a number of high-frequency wave signals with a period below 16 min inside the rainband.These findings are of scientific value for understanding the distribution and evolution of fine structure of typhoon precipitation.关键词
台风/利奇马/降水/时空演变/波动特征Key words
typhoon/Lekima/precipitation/spatial-temporal evolution/fluctuation characteristics分类
大气科学引用本文复制引用
彭成祥,端义宏,冯佳宁..2019年超强台风"利奇马"外雨带降水精细结构分析[J].中国海洋大学学报（自然科学版）,2025,55(3):1-12,12.基金项目
国家自然科学基金项目(42192554,61827901) （42192554,61827901）
中国气象科学研究院科技发展基金项目(2022KJ012) （2022KJ012）
中国气象科学研究院基本科研业务费项目(2022Y006) （2022Y006）
上海台风研究基金项目(TFJJ202210)资助Supported by the National Natural Science Foundation of China(42192554,61827901) （TFJJ202210）
the Science and Technology Development Fund of CAMS(2022KJ012) （2022KJ012）
the Basic Research Fund of CAMS(2022Y006) （2022Y006）
the Research Fund of Shanghai Typhoon Institution(TFJJ202210) （TFJJ202210）
