This book presents the first comprehensive synthesis of mesoscale eddies in the South China Sea (SCS), a region whose unique dynamic environment supports the year-round generation and evolution of energetic eddies. Mesoscale eddies, with diameters of 100-500 km and lifespans from days to months, account for over two-thirds of oceanic kinetic energy and constitute a fundamental component of the global energy cascade linking large-scale circulation to sub-mesoscale and small-scale processes. Their study is therefore essential to understanding oceanic variability and its broader implications for global climate and marine ecosystems.Integrating theoretical, observational, and statistical perspectives, the book compiles advances in mesoscale eddy science derived from extensive research in the SCS and neighboring marginal seas. The volume consolidates more than two decades of findings, including new analyses and datasets up to 2025, and provides a systematic framework for interpreting the generation, development, propagation, and dissipation of eddies under diverse physical forcings such as monsoons, typhoons, and Kuroshio intrusions.Structured into five parts comprising eighteen chapters, the book covers global progress in eddy research, regional generation mechanisms, cruise-based observations, satellite and model-based statistics, and inter-scale interactions.This monograph serves as an authoritative reference for researchers, graduate students, and professionals engaged in physical oceanography, climate dynamics, and marine environmental studies.
