Article(id=1242120474692485725, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242120458489893506, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1259856000000, receivedDateStr=2009-12-04, revisedDate=1274112000000, revisedDateStr=2010-05-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1282924800000, onlineDateStr=2010-08-28, pubDate=1282924800000, pubDateStr=2010-08-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1282924800000, onlineIssueDateStr=2010-08-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774074198646, creator=sys-migrate, updateTime=1774074198646, updator=sys-migrate, issue=Issue{id=1242120458489893506, tenantId=1146029695717560320, journalId=1146031591421210625, year='2010', volume='28', issue='16', pageStart='3', pageEnd='140', issueExtLink='null', onlineDate='null', pubDate='1282924800000', pubDateStr='2010-08-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774074194780, creator='sys-migrate', updateTime=1774074194780, updator='sys-migrate', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=77, endPage=82, ext={EN=ArticleExt(id=1242120477821436548, articleId=1242120474692485725, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Analysis of Persistent Rainy Process in the Middle and Lower Region of the Yangtze River in the Spring of 2009, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=The persistent rainy process in the middle and lower Region of the Yangtze River during the period of Feb. 14 to Mar. 8, 2009, had a strong impact on the industrial and agricultural production, the economic development and the people's life in the region. By using the Synthesis Average method, the persistent rainy process in the middle and lower region of the Yangtze River in the spring of 2009 is analyzed. In order to find the causes of this process, a comparative analysis is made between this process and the less rainfall process during the same period, 2008 in this paper. It is found that the persistent rainy process must have been supported by deep and stable large-scale atmospheric circulation, and the large-scale circulations at different heights constitute a forward trough, which further promotes the occurrence of precipitation. The India-Burma trough is usually the direct influencing system of the persistent rainy process. A comparative analysis is also made between the westerly index and the rainfall intensity during the period of the persistent rainy process, then the same tendency is evidenced clearly. The dry-cold air from Siberia brought by the northwest flow behind the East Asian trough and the warm-moist air from bay of Bengal intersected in the middle and lower region of the Yangtze River, made the water vapor rich in this area. Besides the water vapor condition, the persistent rainy process needs also the atmospheric dynamic conditions. The vertical cross-section of average vorticity field at 30°N during the period of Feb. 14 to Mar. 8, 2009 shows that the vorticity field was the highest at 500hPa to 300hPa. It means that the level needs great deal of gas to keep the strong rotation, so to bring about the deep ascending motion. And the vertical cross-section of average divergence field at 30°N during the period of Feb. 14 to Mar. 8, 2009 shows that the vorticity field was the highest at 850hPa to 500hPa. It means the ascending motion is stronger at the middle and low level. This paper also shows that the atmospheric circulations at different levels make the strong updraft at the middle and low level where water vapor is rich. The vertical distributions of vorticity and divergence make the strong updraft at the middle and low level that could get the best configuration of water vapor and dynamic lifting, and is propitious to precipitation. Some studies show that the north flow and the south flow were divided by Tibetan Plateau at lower-middle troposphere five days before the beginning of the persistent rainy process. Because the deep circulation situation is the necessary preparations for the persistent rainy process in advance, the north and south flows could be used to forecast the process to an extent. , authors=null, authorsList=null, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=OfHcjyAMlVDJz/PDyWHNBg==, pdfFileSize=2694022, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242120476554756733, articleId=1242120474692485725, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=2009年春季长江中下游地区连阴雨过程分析, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract= 2009年2月14日至3月8日，长江中下游地区出现低温连阴雨天气，对该地区的工农业生产、经济发展、人民生活产生了极大的影响。本文利用合成平均方法对2009年长江中下游地区出现的低温连阴雨天气进行客观分析，并与2008年同期的连晴少雨过程进行对比，发现持续低温连阴雨过程除须有深厚、大尺度的环流背景支持外，还需干冷空气与暖湿气流在长江中下游地区交汇，促成大气的不稳定；对比连阴雨过程中的西风指数和降水强度，发现两者的对应关系非常好，一定程度上反映了大尺度环流的强弱对天气过程强度的直接影响，涡度、散度的垂直分布使较强的上升气流发生在中低层，使水汽与动力抬升条件达到最佳配置，非常有利于降水的产生；通过观察这次典型的春季低温连阴雨过程开始前5天的形势场，发现在对流层中下部，被青藏高原分成的南北两支气流的分布对此类连阴雨过程的提早预报具有一定的指导意义。, authors=孙明明, authorsList=孙明明, authorCompany=浙江省嵊州市气象局，浙江嵊州 312400, correspAuthors=null, authorNote=null, correspAuthorsNote=孙明明, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=mo8eSSxKprFiSlJMi5sFfg==, pdfFileSize=2694022, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242120476005302901, 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