Wang Xin; Du Yunyan; Zhou Chenghu; Fan Xing; Yi Jiawei
Source Publication热带海洋学报
AbstractMesoscale eddies are an important component of oceanic features. How to automatically identify these mesoscale eddies from available data has become an important research topic. Through careful examination of existing methods, we propose an improved, SSH-based automatic identification method. Using the inclusion relation of enclosed SSH contours, the mesoscale eddy boundary and core(s) can be automatically identified. The time evolution of eddies can he examined by a threshold search algorithm and a tracking algorithm based on similarity. Sea-surface height (SSH) data from Naval Research Laboratory Layered Ocean Model (NLOM) and sea-level anomaly (SLA) data from altimeter are used in the many experiments, in which different automatic identification methods are compared. Our results indicate that the improved method is able to extract the mesoscale eddy boundary more precisely, retaining the multiple-core structure. In combination with the tracking algorithm, this method can capture complete mesoscale eddy processes. It can thus provide reliable information for further study of reconstructing eddy dynamics, merging, splitting, and evolution of a multi-core structure.
Document Type期刊论文
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Wang Xin,Du Yunyan,Zhou Chenghu,et al. animprovedsshbasedmethodtoautomaticallyidentifymesoscaleeddiesintheocean[J]. 热带海洋学报,2013,032(002):15.
APA Wang Xin,Du Yunyan,Zhou Chenghu,Fan Xing,&Yi Jiawei.(2013).animprovedsshbasedmethodtoautomaticallyidentifymesoscaleeddiesintheocean.热带海洋学报,032(002),15.
MLA Wang Xin,et al."animprovedsshbasedmethodtoautomaticallyidentifymesoscaleeddiesintheocean".热带海洋学报 032.002(2013):15.
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