摘要
用嵊泗站和大陈站资料对浙江省沿海大风的天气气候概况进行分析,结果表明浙北沿海平均每3d有1d出现大风,多于浙中南沿海(平均每7d有2d出现大风).浙北沿海以SSW大风最多,N大风次之;其中NNW—NE大风占46%,SSE—SW大风占43%;浙中南沿海以NNE大风最多,NE大风次之;其中N—ENE大风占77%,S—WSW占18%.浙北沿海大风以4月份最多,9月份最少;浙中南沿海大风以1月份最多,5月份最少;浙北沿海大风日数的月变化比浙中南小.浙江沿海大风的季风特征明显.浙江沿海冬半年大风多为冷空气大风,春季及初夏大风多为低压、倒槽引起,夏季大风主要是受热带气旋影响产生.
An analysis is made on the synoptic and climatic survey of the gale in the coast of Zhejiang Province using data collected at Shengsi and Dachen. The results show that the gale probabilities are about 1/3 at Shengsi and about 2/7 at Dachen. At Shengsi, the prevailing directions of gale are SSW and N;the percentages of NNW--NE gale and SSE--SW gale are 46% and 43% respectively. At Dachen, the prevailing directions of gale are NNE and NE ; the percentages of N--ENE gale and S--WSW gale are 77% and 18% respectively. The highest and lowest gale probabilities occurred at Shengsi in April and September, respectively, whereas they occurred at Dachen in January and May, respectively. The monthly change in the gale days is greater at Dachen than that at Shengsi. The gale in the coast of Zhejiang Province has a clear monsoonal character. The gale is mainly caused by cold airs during winter, and depressions and reverse troughs from spring to early summer, and tropic cyclones in summer.
出处
《台湾海峡》
CAS
CSCD
北大核心
2007年第4期476-483,共8页
Journal of Oceanography In Taiwan Strait
关键词
沿海大风
气候概况
天气系统
浙江
coast gale
climatic survey
synoptic system
Zhejiang
