海洋预报2017，Vol.34Issue(4)：58-65,8.DOI:10.11737/j.issn.1003-0239.2017.04.007
南海西沙一次冷空气强风分析
Analysis on gale weather process accompanied by severe cold air on Xisha islands of South China Sea
摘要
Abstract
The characteristic of gale weather process accompanied by severe cold air on xisha islands of South China Sea was studied in this paper.The results showed that the circulation background was resulted from the south falling vortex,zonal trough became a meridianal one and the strong cold air breaking out aggressive invaded XiSha at low latitude.Through the discussion of the distribution characteristics of the varying temperature field at 850hPa,it pointed out the evolution and strength distributions of negative varing temperature had a relation with the surface pressure field character,and the isobar dense zone also had a significant association with gale.The distribution and evolution of temperature at advection level showed a same trend with surface pressure gradient and allobaric gradient.The cold advection could enhance surface pressure gradient and allobaric gradient,which was an important factor for the occurrence and development of gale weather process on xisha islands.关键词
强风天气/变温场/气压梯度/温度平流Key words
gale weather process/varying temperature field/pressure gradient/temperature advection分类
海洋科学引用本文复制引用
周宇..南海西沙一次冷空气强风分析[J].海洋预报,2017,34(4):58-65,8.
