热带气象学报2017，Vol.33Issue(2)：231-240,10.DOI:10.16032/j.issn.1004-4965.2017.02.009
热带西太平洋海面高度变化与华南3-4月降水异常的关系
THE RELATIONSHIP BETWEEN SEA LEVEL ANOMALY OVER THE TROPICAL SOUTHWESTERN PACIFIC AND SPRING RAIN IN THE SOUTHERN CHINA
摘要
Abstract
With the development of technology in oceanographic observation,new types of data are applied to the research on atmosphere and ocean.Sea level anomaly(SLA) observations from satellites can represent the oceanic dynamic and thermodynamic conditions,which are crucial to the influence of ocean on the atmosphere.In this paper,we used SLA data,derived from merged muti-satellite along track observations,to analyze the Southem China Spring Precipitation (SCSP).The results reveal that the SCSP in March and April is well correlated with the meridional position of the Subtropical High ridge (SHR) since the moisture transport in the northwestern part of the Subtropical High is crucial for the SCSP.On the interannual time scale,SCSP is negatively correlated with the SHR significantly,but positively with southwest wind (Vsw) over the southeast of Tibetan Plateau (105～115 °E,20～25 °N).Using the Outgoing Longwave Radiation (OLR) data we found that the SLA of Southwest Pacific (150 °E～170 °W,10～5 °S) can affect the OLR and the latent heat release east of the Philippine Sea,and when the SLA anomaly in the southwestern Pacific is positive,the Subtropical High tends to be located northward,the Vsw becomes weak,and the SCSP tends to be reduced.关键词
海面高度/西南太平洋/西太副高脊线/西南风急流/华南前汛期降水Key words
sea level anomaly/Southwest Pacific/Subtropical High/southwesterly jet/Southern China Spring Precipitation分类
天文与地球科学引用本文复制引用
吴琼,王晓春,胡雅君,刘屹岷..热带西太平洋海面高度变化与华南3-4月降水异常的关系[J].热带气象学报,2017,33(2):231-240,10.基金项目
国家自然科学基金项目(41328006) （41328006）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
南京信息工程大学启动经费项目(S8113046001) （S8113046001）
2015江苏双创团队项目 （）
国家气象局项目(GYHY201506032)共同资助 （GYHY201506032）
