王亚非,山崎信雄. 2000. 初夏热带西太平洋对流云团周期性西北传播与梅雨带的变动[J]. 气象学报, 58(6):692-703, doi:10.11676/qxxb2000.070
初夏热带西太平洋对流云团周期性西北传播与梅雨带的变动
THE RELATIONSHIP BETWEEN THE MOVEMENT OF THE MEIYU/BAIU RAIN BELT AND THE PERIODIC NORT HWESTWARD PROPAGATION OF THE CONVECTIVE ACTIVITY FROM WESTERN PACIFIC OVER TROPICAL REGION
投稿时间:1998-01-19  修订日期:1999-10-18
DOI:10.11676/qxxb2000.070
中文关键词:  热带对流云团  梅雨带  低频振荡
英文关键词:Tropical convective activity  Meiyu/Baiurain belt  Low-frequent oscilation
基金项目:自然科学基金委重大项目,:“能量与水分循环试验的研究”项目资助(No.49794030);人事部非教育系统留学回国人员科技活动择优资
作者单位
王亚非 中国气象科学研究院, 北京 100081 
山崎信雄 日本气象研究所, 茨城县 305 
摘要点击次数: 1681
全文下载次数: 1901
中文摘要:
      为了了解来自低纬度的气象因素对梅雨带季节内变化的影响,文中对1985年和1986年6~7月份的个例进行了细致诊断,并针对有关问题用历史资料做了统计和合成。发现(1)梅雨雨带的向北位移与10~15°N/140°E附近的热带对流云团向西移动有连带关系,当热带对流云团向西北移动时副热带高压也向西北扩张,顺次由东向西影响梅雨带北抬。(2)低纬度向西北方向移动的对流云团具有准8,18以及30d周期。(3)中国江淮梅雨的入梅也与6月份第一次出现这种对流云团周期性(8,18以及30d)西北移动有密切关系。
英文摘要:
      In order to invest igate the effect by the meteorolog ical factors from lower latit udes on Meiyu/Baiu front,a diagnostic analysis for the two cases during June to July of 1985 and 1986 was examined.We found that.(1) when the tropical convective activity westward moving near 10-17°N,140°E from east side(10-17°N,160°E),the northw ard shift of the Meiyu/Baiurain beltoccur.(2)the onsets of Meiyu in China of both cases took place just when the convective activity around lower lat it udes moved westward through~140°Ewith the 20-30 days oscil ation period at the first time in June.(3)the main fact or which results in the northward and southward shift of Meiyu/Baiurain belt is thought as the 20-30 day oscillation of the tropical convective activity around West Pacific.(4)the Rossby wave propagation which is excited by the convective activity around Philippine occurred only in late summer and did notgive anyim pact to the intraseasonal variation of the Meiyu/Baiu rain belt in the both cases.
HTML   查看全文   查看/发表评论  下载PDF阅读器
分享按钮