A vortex-implanted initialization scheme for the mesoscale eddy prediction: Real simulation and hindcast

IF 3.1 3区地球科学 Q2 METEOROLOGY & ATMOSPHERIC SCIENCES

Ocean Modelling Pub Date : 2024-12-12 DOI:10.1016/j.ocemod.2024.102489

Yuhang Zhu , Shiqiu Peng

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引用次数: 0

Abstract

This study aims to assess the effectiveness of applying the vortex-implanted initialization scheme for the mesoscale eddy prediction (VISTMEP) proposed by Zhu et al. (2022) in the real ocean. Both the Observational System Simulation Experiments (OSSEs) with real daily forcings and the real hindcast for the prediction of oceanic mesoscale eddies in the Northwest Pacific Ocean (NWPO) are conducted using an eddy-resolved numeric ocean model based on Regional Ocean Modeling System (ROMS) along with the three dimensional variational assimilation (3DVAR) module. The results show that, compared to the traditional initialization, VISTMEP can significantly reduce the biases in the prediction of characteristic quantities of mesoscale eddies (including the track, sea surface relative vorticity (SSRV), sea surface eddy kinetic energy (SSEKE), and scale) in both the OSSEs and the real hindcast, through optimizing the three dimensional (3D) structures of mesoscale eddies in both their initial states and evolutions. This study suggests that VISTMEP has a great potential application in operational service of the oceanic mesoscale eddy prediction.

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一种用于中尺度涡旋预报的涡植入初始化方案：真实模拟与后验

本研究旨在评估Zhu et al.（2022）提出的在真实海洋中应用涡植入初始化方案进行中尺度涡预报（vismep）的有效性。利用基于区域海洋模拟系统（ROMS）和三维变分同化（3DVAR）模块的涡分辨数值海洋模式，对西北太平洋（NWPO）海洋中尺度涡旋进行了实际日强迫观测系统模拟实验（OSSEs）和实际后预报。结果表明，与传统初始化方法相比，vismep通过优化中尺度涡旋初始状态和演化过程的三维结构，显著降低了中尺度涡旋特征量（路径、海面相对涡度（SSRV）、海面涡旋动能（SSEKE）和尺度）在osse和真实后预报中的预报偏差。研究表明，vismep在海洋中尺度涡旋预报业务服务中具有很大的应用潜力。

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来源期刊

Ocean Modelling 地学-海洋学

CiteScore

5.50

自引率

9.40%

发文量

审稿时长

19.6 weeks

期刊介绍： The main objective of Ocean Modelling is to provide rapid communication between those interested in ocean modelling, whether through direct observation, or through analytical, numerical or laboratory models, and including interactions between physical and biogeochemical or biological phenomena. Because of the intimate links between ocean and atmosphere, involvement of scientists interested in influences of either medium on the other is welcome. The journal has a wide scope and includes ocean-atmosphere interaction in various forms as well as pure ocean results. In addition to primary peer-reviewed papers, the journal provides review papers, preliminary communications, and discussions.