| 摘要: |
| 利用柳州市2010-2019年75个加密自动气象观测站小时降水资料，分析柳州市1h、3h、6h短时强降水时空分布特征。结果表明：短时强降水出现最多的是融安、融水一带以及鹿寨北部，山脉的迎风坡和喇叭口地形更利于短时强降水的出现；高发期在5、6月份，其次是7、8月份；短时强降水的日变化呈现单峰结构，主要出现在夜间和早晨时段。该区域短时强降水时空分布特征差异显著，与影响系统、地形的辐合抬升作用以及局地热力条件差异有关。 |
| 关键词: 加密自动气象观测站；频次；短时强降水；地形 |
| DOI： |
| 投稿时间：2021-09-04修订日期：2021-11-16 |
| 基金项目:柳州市重点研发计划项目（2019BK10602）“基于城区或县域的区域气候可行性论证研究---以柳州市北部生态新区为例” |
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| The Analysis of Short-time Heavy Rainfall Spatio-Temporal Characteristics in Liuzhou Based on the Dense Automatic Weather Stations |
| qinjing |
| (Liuzhou Meteorological Bureau) |
| Abstract: |
| Based on the hourly precipitation data of 75 dense observations from automatic weather stations in Liuzhou from 2010 to 2019, the spatio-temporal characteristics of short-time heavy rainfall are investigated. The results indicate that, short-time heavy rainfall happens most frequently in Rongan and Rongshui and northern Luzhai. The windward slopes of the mountains and the trumpet-shaped topography are more conducive to the appearance of short-time heavy rainfall. Short-time heavy rainfall activity reaches high occurrence in May and June, followed by July and August. The diurnal variation of short-time heavy rainfall shows a single-peak distribution, which mainly appears at night and the morning.There are significant differences in the spatio-temporal distribution characteristics of short-time heavy rainfall in this area, which are related to the influence of the system, the convergence and uplift of the topography, and the differences in local thermal conditions. |
| Key words: Dense automatic weather station；Frequency；Short-time heavy rainfall；Topography |
