文章摘要
张增海1,刘涛1,许映龙1,2,曹越男1,杨正龙1.2019年春季海洋天气评述[J].海洋气象学报,2019,39(3):103-113
2019年春季海洋天气评述
Spring 2019 marine weather review
投稿时间:2019-07-11  修订日期:2019-07-16
DOI:10.19513/j.cnki.issn2096-3599.2019.03.012
中文关键词: 大气环流  大风  海雾  温带气旋  浪高  海温
英文关键词: general atmospheric circulation  gale  sea fog  extratropical cyclone  wave height  sea surface temperature
基金项目:国家重点研发计划项目(2017YFC1501604);国家自然科学基金项目(4177050378)
作者单位
张增海1,刘涛1,许映龙1,2,曹越男1,杨正龙1 (1. 国家气象中心北京 100081 2. 中国科学院大学北京 100049) 
摘要点击次数: 777
全文下载次数: 332
中文摘要:
   2019年春季(3—5月)的大气环流特征为:北半球极涡呈偶极型分布,两个低值中心分别位于东、西半球,中高纬度呈4 波型。3月,亚洲中东部中高纬度的经向型环流利于冷空气南下。4月和5月,冷空气势力减弱,温带气旋活动增加。我国近海出现了17次8级以上大风过程,其中冷空气大风过程6次,冷空气和温带气旋共同影响的大风过程有3次,入海温带气旋大风过程8次。春季共有13次海雾过程,3月3次,4月6次,5月4次。近海浪高在2 m以上的海浪过程有14次,台湾海峡周边海域的浪高较大。西北太平洋和南海没有台风生成,全球其他各大洋共有热带气旋 12个。我国近海的海面温度整体呈上升趋势,且北方海域的上升幅度大于南方海域。
英文摘要:
   The main characteristics of the atmospheric circulation in spring (from March to May)2019 are as follows. The polar vortex was characterized by a dipole type in the Northern Hemisphere and 4-wave mode in middle and high latitudes. Two centers of low values were located in the eastern hemisphere and the western hemisphere, respectively. In March, the atmospheric circulation was in meridional pattern in middle and high latitudes of central and eastern Asia, which is favorable for the southward of the cold air. In April and May, cold air was weaker and extratropical cyclone activities increased. In spring, there were 17 gale(above 8 grade B.F.) weather over offshore areas of China, including 6 produced by cold air, three by cold air and extratropical cyclones, and 8 by extratropical cyclones which moved into the sea. Thirteen obvious sea fog processes occurred over offshore areas, including three in March, 6 in April, and 4 in May. There were 14 rough sea wave processes (above 2 m), and the wave over waters near Taiwan Strait was relatively high. No typhoon occurred over western North Pacific and the South China Sea. In addition, there were 12 tropical cyclones in other oceans of the world. The sea surface temperature in the offshore areas showed upward tendency, while the increase rate in northern seas is larger than that in southern seas.
查看全文   查看/发表评论  下载PDF阅读器
关闭