1998年南海夏季风低频振荡特征分析  

FEATURE ANALYSIS OF SUMMER MONSOON LFO OVER SCS IN 1998

作　　者：徐国强[1] 朱乾根[2] 

机构地区：[1]中国气象科学研究院,北京100081 [2]南京气象学院,江苏南京210044

出　　处：《热带气象学报》2002年第4期309-316,共8页Journal of Tropical Meteorology

基　　金：国家自然科学基金(49975105);中国气象科学研究院博士启动基金项目资助

摘　　要：利用NCEP/NCAR 1998年再分析资料和SST资料,研究了南海夏季风的低频振荡特征。结果表明,南海夏季风的低频振荡对南海夏季风的爆发具有加强的作用;南海低频低层辐合(散)区对应低频降水正(负)值区;南海地区的大气低频振荡以向北、向东传播为主,南海地区低频散度在垂直方向呈现出相互补偿的特征。In the context of NCEP/NCAR reanalysis daily data and SST in 1998, this paper investigates the features of summer monsoon low-frequency oscillation (LFO) over the South China Sea (SCS). Results show that SCS summer monsoon onset is enhanced with its LFO. LF low-level convergence (divergence) region of SCS is in the LF rainfall positive (negative) area. LFO of SCS migrates from south to north in meridian and from west to east in zonal direction. LF divergence of SCS is compensative each other between high and low level.

关 键 词：1998年 南海 季风 低频振荡 传播 小波分析 

分 类 号：P461.2[天文地球—大气科学及气象学] P425.