Estimate of eddy energy generation/dissipation rate in the world ocean from altimetry data |
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| Authors: | Chi Xu Xiao-Dong Shang Rui Xin Huang |
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| Institution: | (1) Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China;(2) Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA;(3) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China; |
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| Abstract: | Assuming eddy kinetic energy is equally partitioned between the barotropic mode and the first baroclinic mode and using the
weekly TOPEX/ERS merged data for the period of 1993~2007, the mean eddy kinetic energy and eddy available gravitational potential
energy in the world oceans are estimated at 0.157 and 0.224 EJ; the annual mean generation/dissipation rate of eddy kinetic
energy and available gravitational potential energy in the world oceans is estimated at 0.203 TW. Scaling and data analysis
indicate that eddy available gravitational potential energy and its generation/dissipation rate are larger than those of eddy
kinetic energy. |
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