浙南沿岸海表面温度分布特征

Sea surface temperature distribution characteristics along the southern coastal region of Zhejiang Province

文章根据浙南沿岸3个海洋观测站大陈、坎门、南麂站51a(1960-2010年)SST观测资料,进行统计分析,得出SST时空分布特征。结果表明,浙南沿岸的SST总体呈现北低南高的趋势,冬季南北差异最小,夏季南北差异最大;51 a年浙南沿岸SST总体呈现上升趋势,上升速率为0.017℃/a;SST变化存在3.5 a、5～6 a、2～7 a及11 a左右的振荡周期;SST主要由年循环分量决定,谐波拟合效果良好。

The SST temporal and spatial distribution in southern Zhejiang coast is presented as a result of statistical analysis based on 51 years observation data from Dachen, Kanmen and Nanji gauge stations. It shows that the overall SST along the coast is higher in the southern part and lower in the northern part, and the discrepancy between south and north parts becomes smallest in winter and largest in summer. Along the southern coast of Zhejiang, SST as a whole generally has a uptrend at rising rate of 0.017℃/a in last 51 years. In addition, there are oscillation periods of 3.5 a, 5-6 a and 11 a stay with SST changes. Mainly, the annual cyclical variation determines SST with a good match of harmonic fitting effect.