热带太平洋海面盐度年际变化的海洋同化数据分析  

INTERANNUAL VARIATION IN THE TROPICAL PACIFIC SURFACE SALINITY FROM OCEANIC ASSIMILATION DATA

作　　者：李海洋[1] 王东晓[1,2] 谢强[1] 

机构地区：[1]中国科学院南海海洋研究所热带海洋环境动力学重点实验室 [2]中国气象局广州热带海洋气象研究所,广东广州510080

出　　处：《热带气象学报》2003年第B09期97-106,共10页Journal of Tropical Meteorology

基　　金：国家自然科学基金项目(40136010);中国科学院项目(KZCX2-203;KZCX2-205)资助

摘　　要：用诊断与统计方法分析了海洋同化数据和综合海洋大气数据集COADS海面淡水通量。结果显示热带太平洋海面盐度具有年际变化特征,并且和ENSO循环具有内在的联系。从相关统计的角度评估了热带太平洋海面盐度年际变化中海面蒸发与降水、温跃层调整、水平盐分平流等主要因子的不同贡献。This paper analyzes oceanic assimilation data and surface fresh water flux from COADS. The results show that sea surface salinity in the tropical Pacific has the feature of interannual variation and it has intrinsic connection with ENSO cycles. Different contribution by major factors to surface salinity interannual variation is further evaluated, such as surface evaporation minus precipitation rate, thermocline adjustment and horizontal advection of salinity. On the interannual time scale, it offers the basis for understanding air-sea interaction in the tropical Pacific in the view of water cycle.

关 键 词：EOF 因子分析 热带太平洋盐度 

分 类 号：P413[天文地球—大气科学及气象学]