气象研究与应用2025，Vol.46Issue(1)：43-50,8.DOI:10.19849/j.cnki.CN45-1356/P.2025.1.06
基于多项式回归拟合方法的风廓线雷达垂直速度与能见度关系分析
Relationship analysis between vertical velocity of wind profile radar and visibility based on polynomial regression fitting method
詹鸿宇 1邹德龙 1钟若嵋 1吴逸之 1周佩豪2
作者信息
- 1. 民航广西空管分局,南宁 530048
- 2. 黄冈市气象局,湖北黄冈 438200
- 折叠
摘要
Abstract
Based on the automated weather observing system data and the wind profiler radar data of Nanning Wuxu International Airport,the relationship between vertical velocity and the visibility of special altitude layers in different seasons during the precipitation process is studied by using the polynomial regression fitting method,and the indicative effect of vertical velocity on the variation of visibility is analyzed.The results show that the peak period of low visibility varies in different seasons.The low visibility often happens in summer afternoon,coinciding with convective precipitation.The fitting certainty coefficient of vertical velocity and visibility at 760 m altitude level is large.The vertical velocity and visibility of the characteristic altitude layer are different in different seasons.When the vertical velocity exceeds 6 m·s-1 in spring and winter,the precipitation intensity first increases and then decreases with the increase of vertical velocity,and the average visibility increases rapidly when the precipitation intensity is the greatest.The greater the precipitation intensity in summer and autumn,the lower the average visibility is.The change of vertical velocity during precipitation can indicate the onset of a decrease in visibility,but the change of vertical velocity has a lag when the visibility turns better.关键词
风廓线雷达/垂直速度/能见度/多项式回归拟合Key words
wind profile radar/vertical velocity/visibility/polynomial regression fitting分类
大气科学引用本文复制引用
詹鸿宇,邹德龙,钟若嵋,吴逸之,周佩豪..基于多项式回归拟合方法的风廓线雷达垂直速度与能见度关系分析[J].气象研究与应用,2025,46(1):43-50,8.
