热通量估算比容海平面变化的结果分析

发布时间：2018-03-19 17:12

本文选题：海平面变化　切入点：热通量　出处：《海洋通报》2017年03期 　论文类型：期刊论文

【摘要】：基于海表净热通量数据估算上层比容海平面变化,同时将估算结果与严格基于温盐定义计算的比容海平面变化和卫星高度计实测海平面变化进行对比,结果显示:季节尺度上,在黑潮延伸体和湾流海域,利用热通量数据估算的比容变化与利用定义计算的比容变化差异不大,且可以很好地解释实测海平面变化;而在热带太平洋海域,热通量估算结果与利用定义计算的比容结果有很大不同,而前者更接近于高度计实测结果;低频时间尺度上,上述海域热通量估算结果不能很好地刻画实测海平面变化,而利用定义计算的比容结果却与实测数据符合很好。
[Abstract]:Based on the net heat flux data of sea surface, the sea level change of upper specific volume is estimated, and the calculated results are compared with those calculated strictly based on the definition of temperature and salt and the sea level change measured by satellite altimeter. The results show that, on a seasonal scale, In the Kuroshio extensional body and the Gulf Stream, there is little difference between the specific volume change estimated by heat flux data and that calculated by using the definition, and it can well explain the observed sea level change, while in the tropical Pacific Ocean, The results of heat flux estimation are very different from those calculated by definition, and the former is closer to the measured results of altimeter, and the results of heat flux estimation in the low frequency time scale can not well describe the measured sea level change. However, the specific volume calculated by the definition is in good agreement with the measured data.
【作者单位】：河海大学海洋学院;
【基金】：国家自然科学基金(41506006;41376028;41506020) 江苏省自然科学基金(BK20140846) 全球变化与海气相互作用专项(GASI-03-01-01-09) 国家海洋局海洋数据分析与应用重点实验室开放基金(LDAA-2013-01) 江苏省海岸海洋资源开发与环境安全重点实验室开放基金(JSCE201505)
【分类号】：P731.23

【相似文献】