| 摘要: |
| 【目的】利用黔南州2010—2021年46个自动气象站小时降水资料，分析研究黔南降水强度（小时雨强）、降水量和降水频次三个指标时空变化特征。【方法】天气学与统计学方法。【结果】结果表明：黔南汛期降水主要有4个大值中心，位于荔波、都匀、长顺和贵定四个地区，降水量均超过1100mm，除荔波外，其余3个降水量均占年降水量80%以上；罗甸以东地区短时强降水发生频次和强度为全州较大区域；相比降水时长，汛期降水受降水强度的影响更强，但局地特征明显；四个区域短时强降水集中出现在下午和上半夜时段，日变化特征仅降水强度呈多峰型，其余两个指标基本表现为单峰型，区域2降水量峰值出现时间最早，区域3降水强度最强；区域4降水量和降水频次最大。【结论】黔南汛期降水大值中心分散，局地特征明显，且大部分地区受降水强度的影响更强；四个区域短时强降水集中出现在下午和上半夜时段，频次和降水峰值自西向东随时间达到最大，降水强度东部最强，持续时间短，西部与东部相反。 |
| 关键词: 降水量；降水强度；降水频次；短时强降水 |
| DOI： |
| 投稿时间：2023-11-28修订日期：2024-02-04 |
| 基金项目: |
|
| Analysis of temporal and spatial variation characteristics of hourly precipitation in flood season in QianNan from 2010 to 2021 |
| DengJihai,Tang Hongzhong,Jiang Junzhi,Chen Mei,Xiong Jin,Huang Haoyu |
| (KaiYang Meteorological Bureau;Qiannan Meteorological office;Qianxi Meteorological office of Guizhou Province;Kaiyang Meteorological office of Guizhou Province) |
| Abstract: |
| 【Objective】Based on the hourly precipitation data of 46 automatic weather stations in QianNan from April to September from 2010 to 2021,analyzed the temporal and spatial variation characteristics of precipitation intensity,precipitation and precipitation frequency.【Method】Meteorology and statistical methods.【Result】The results show that there are four large value centers of precipitation in flood season,which are located in four regions of LiBo,DuYun,ChangShun and GuiDing,and the precipitation is above 1100 mm.Except for LiBo,the precipitation in the other three regions accounts for more than 80% of the annual precipitation.The frequency and intensity of short-term heavy precipitation in the east of LuoDian are larger in the whole state.Compared with the duration of precipitation,the precipitation in the flood season is more affected by the precipitation intensity,but the local characteristics are obvious.The short-term heavy precipitation in the four regions concentrated in the afternoon and the first half of the night.The diurnal variation characteristics only showed a multi-peak precipitation intensity,and the other two indicators basically showed a single-peak type.The peak precipitation in region 2 appeared the earliest,and the precipitation intensity in region 3 was the strongest,and egion 4 has the largest precipitation and precipitation frequency.【Conclusion】The large value centers of precipitation in the flood season in QianNan are scattered,with obvious local characteristics,and most areas are more affected by precipitation intensity.The short-term heavy precipitation in the four regions is concentrated in the afternoon and the first half of the night.The frequency and precipitation peak reach the maximum from west to east with time.The precipitation intensity is the strongest in the east,but the duration was short.The west was opposite to the east. |
| Key words: precipitation; precipitation intensity; precipitation frequency; short-term heavy precipitation |
