佛山市短时强降水时空特征及主要影响系统
DOI:
作者:
作者单位:

1.广东省佛山市突发事件预警信息发布中心;2.广东省佛山市气象局

作者简介:

通讯作者:

中图分类号:

基金项目:

龙卷等致灾雷暴大风精细化探测及机理研究院士专家工作站(2021002)


请扫码阅读

Analysis of spatio temporal characteristics of short-time heavy rainfall and its main influencing systems in Foshan
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    利用佛山市152个自动站2012—2020年降水资料,根据强降水范围和性质,研究了佛山市短时强降水的时空分布特征,并分析了主要影响系统。结果表明,短时强降水发生的频次整体呈上升趋势,不同范围、不同性质的短时强降水时空差异性较大:局地性、区域性、突发型短时强降水主要发生在4到9月,全市性、增长型短时强降水主要发生在3到10月,持续型短时强降水5、6月份发生的频次最高;从日变化来看,全市性短时强降水降雨量的中分位值大于区域性短时强降水,局地性短时强降水降雨量的中分位值最小,持续型短时强降水的中分位值大于突发型和增长型短时强降水,最大的短时强降水是一次增长型的区域性过程;从空间分布来看,局地性短时强降水在佛山西南部和北部发生的频次较高,全市性短时强降水发生频次明显与局地性短时强降水发生频次的分布相反,区域性短时强降水在西南部发生频次较低;不同类型短时强降水发生频次空间分布较为均匀,但增长型短时强降水发生频次高于突发型短时强降水,持续型短时强降水发生频次最低。另外,不同范围、不同性质短时强降水影响系统占比各不相同,占比最小的均为西南低涡。

    Abstract:

    Based on the precipitation data of 152 automatic stations in Foshan city from 2012 to 2020, the temporal and spatial distribution characteristics of short-time heavy rainfall in Foshan city were studied according to the range and nature of heavy rainfall, and the main influencing systems were analyzed. Results show that the frequency of precipitation period the overall rise, different scope and nature of the short-time heavy rainfall spatio-temporal difference is bigger: local, regional, abrupt type short-time heavy rainfall occurs mainly in April to September, citywide, growth type short-term rainfall mainly in 3 to 10 months, continuous type occurred in May and June has the highest frequency; In terms of diurnal variation, the median quantile value of city-wide short-time heavy rainfall was larger than that of regional short-time heavy rainfall, and the median quantile value of local short-time heavy rainfall was the smallest. The median quantile value of continuous type short-time heavy rainfall was larger than that of abrupt type and growth type short-time heavy rainfall,the maximum short-time heavy rainfall is a growing regional process. From the perspective of spatial distribution, the frequency of local short-time heavy rainfall is higher in the southwest and north of Foshan. The frequency of city-wide short-time heavy rainfall is obviously opposite to that of local short-time heavy rainfall, and the frequency of regional short-time heavy rainfall is lower in the southwest of Foshan. The spatial distribution of the frequency of different types of short-time heavy rainfall is uniform, but the frequency of growth type short-time heavy rainfall is higher than that of abrupt type short-time heavy rainfall, and the frequency of continuous type short-time heavy rainfall is the lowest. In addition, the proportion of short-time heavy rainfall system influenced by different ranges and different properties is different, the smallest proportions were southwest vortex.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
文章历史
  • 收稿日期:2022-07-07
  • 最后修改日期:2022-09-19
  • 录用日期:2023-02-07
  • 在线发布日期: 2023-07-18
  • 出版日期: