Features of the Three Dimensional Structures in the Pacific Sub-surface Layer in Summer

• 作者: Chenghai Wang Feimin Zhang Kai Yang Luyuan Chen Rong Cheng
• 来源期刊: 大气科学研究(英文)
• 学科: 地球科学
• 关键词: Pacific sea temperature Spatial structure Temporal evolution
• 年，卷（期）: 2020,（2）
• 页码范围: 1-10
• 页数: 10页
• 分类号: P73

摘要

The anomaly of the summer sea temperature is analyzed by a spatial-temporal synthetically rotated Empirical Orthogonal Function(REOF)at three different depths(0 m,40 m,and 120 m)over the area 110°E~100°W and 30°S~60°N.The spatial-temporal distribution shows that the“signal”of annual anomaly is stronger in the sub-surface layer than the surface layer,and it is stronger in the eastern equatorial Pacific than in the western area.The spatial structure of the sea temperature anomaly at different layers is related to both the ocean current and the interaction of ocean and atmosphere.The temporal changing trend of the sub-surface sea temperature in different areas shows that the annual mean sea temperature increases and the annual variability evidently increases since the 1980s,and these keep the same trend with the increasing El Nino phenomenon very well.