Surface available gravitational potential energy in the world oceans

作     者：Ruixin Huang Bo Qiu Zhiyou Jing Ruixin Huang;Bo Qiu;Zhiyou Jing

作者机构：State Key Laboratory of Tropical OceanographySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Woods Hole Oceanographic InstitutionWoods HoleMA 02543USA Department of OceanographyUniversity of Hawaii at ManoaHonoluluHI 96822USA 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2022年第41卷第4期

页      面：40-56页

核心收录：

学科分类：08[工学] 0816[工学-测绘科学与技术] 

基　　金：The National Natural Science Foundation of China under contract Nos 92058201 and 41776040 the Chinese Academy of Sciences under contract Nos ZDBS-LY-DQC011,XDA15020901 and ISEE2018PY05 

主　　题：satellite altimetry surface available potential energy eddy kinetic energy 

摘      要：Satellite altimetry observations,including the upcoming Surface Water and Ocean Topography mission,provide snapshots of the global sea surface high anomaly *** common practice in analyzing these surface elevation data is to convert them into surface velocity based on the geostrophic *** increasing horizontal resolution in satellite observations,sea surface elevation data will contain many dynamical signals other than the geostrophic velocity.A new physical quantity,the available surface potential energy,is conceptually introduced in this study defined as the density multiplied by half of the squared deviation from the local mean reference surface *** gravitational potential energy is an intrinsic property of the sea surface height field and it is an important component of ocean circulation energetics,especially near the sea *** connection with other energetic terms,this new variable may help us better understand the dynamics of oceanic circulation,in particular the processes in connection with the free surface data collected through satellite *** preliminary application of this concept to the numerically generated monthly mean Global Ocean Data Assimilation System data and Archiving,Validation,and Interpretation of Satellite Oceanographic altimeter data shows that the available surface potential energy is potentially linked to other dynamic variables,such as the total kinetic energy,eddy kinetic energy and available potential energy.