摘要
利用福建内陆以及沿海的站点观测资料、NCEP再分析资料以及EOF方法,对比分析了台湾海峡西岸不同区域海陆风气候特征及其对应的大气环流形势。结果表明:空间分布上看,海峡西岸的海陆风平均频次呈现南北多,中部少的特点。时间分布上看,4、5月以及夏末秋初海陆风日较多,冬季相对较少。北、中、南部海风(陆风)的平均起风时间呈现一种阶梯变化,北部最早,南部最晚。当副热带高压加强西伸控制华南大部分区域,且地面没有明显主导系统时,海峡西岸更容易出现海陆风。这可能是由于副高加强能够导致海陆热力温差加大,从而导致海陆风更易出现。
The Climatological characteristics of sea land breeze(SLB) along western coast of Taiwan Strait and its corresponding large-scale circulation are studied using observation data, NCEP reanalysis data and EOF method. From the perspective of spatial distribution, SLB occurs more frequently in northern and southern coastal regions. From the time point of view, SLB occurs more frequently in April, May and early autumn. The initial time of sea(land) breeze varies from north to south coast in about one hour. SLB tends to arise when Subtropical High(SH) strengthens and there are no surface leading systems in Hua-nan area. This is because sea-land thermal contrast could be strengthened when SH strengthens.
出处
《海洋预报》
2015年第6期58-65,共8页
Marine Forecasts
基金
福建省气象局开放式基金项目(2012K04)
厦门市气象局海洋精细化预报创新团队项目
关键词
海陆风
时空分布
EOF分析
环流形势
sea land breeze
spatial and temporal distribution
EOF analysis
large-scale circulation
