An Examination of Circulation Characteristics in the Luzon Strait and the South China Sea Using High-Resolution Regional Atmosphere-Ocean Coupled Models

Yingjing Jiang, Shaoqing Zhang, Jiwei Tian, Zhiwei Zhang, Jianping Gan, Chau Ron Wu

    研究成果: 雜誌貢獻期刊論文同行評審

    1 引文 斯高帕斯(Scopus)

    摘要

    Sea surface winds and water transports through the Luzon Strait (LS) are two main factors that force the circulations in the South China Sea (SCS). Typically, a sandwich-like inflow-outflow-inflow structure in the LS and a corresponding three-layer cyclonic-anticyclonic-cyclonic circulation structure in the SCS have been identified. In this study, the impact of model resolution on the simulation of SCS circulations is investigated through examining the circulation features in different resolution coupled models of the Asia-Pacific Regional Coupled Prediction (AP-RCP) system at the Qingdao Pilot National Laboratory for Marine Science and Technology (QNLM). The AP-RCP system of QNLM consists of a 9-km resolution Regional Ocean Model System (ROMS) coupled with a 27-km resolution Weather Forecast and Research (WRF) atmosphere model (9v27) and a 3-km ROMS coupled with a 9-km WRF (3v9). Results show that compared to the 9-km case, the 3-km resolution ocean model can distinctly depict the topography of Bashi Channel and Luzon Trough, thus simulating the deep circulations of the LS more accurately. In addition, with more mesoscale air-sea interactions, the 3v9 model has better simulation of Kuroshio structure and strength as well as upper layer SCS circulations than the 9v27 model. Our results affirm that due to better representation of complex topography at the LS and eddy-current interactions in the Kuroshio area, the enhanced-resolution coupled model can simulate the LS overflow and Kuroshio intrusion more accurately, which may help to improve the simulation and prediction for SCS circulations and mesoscale activities once the observations are sufficient in the future.

    原文英語
    文章編號e2020JC016253
    期刊Journal of Geophysical Research: Oceans
    125
    發行號6
    DOIs
    出版狀態已發佈 - 2020 六月 1

    ASJC Scopus subject areas

    • Geophysics
    • Forestry
    • Oceanography
    • Aquatic Science
    • Ecology
    • Water Science and Technology
    • Soil Science
    • Geochemistry and Petrology
    • Earth-Surface Processes
    • Atmospheric Science
    • Earth and Planetary Sciences (miscellaneous)
    • Space and Planetary Science
    • Palaeontology

    指紋 深入研究「An Examination of Circulation Characteristics in the Luzon Strait and the South China Sea Using High-Resolution Regional Atmosphere-Ocean Coupled Models」主題。共同形成了獨特的指紋。

    引用此