文献类型：期刊文献

英文题名：Fast-changing upwelling off the west coast of Hainan Island

作者：Bai, Peng[1,2];Ling, Zheng[1];Zhang, Shuwen[3];Xie, Lingling[1,2];Yang, Jingling[1,2]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab Zhanjian, Zhanjiang, Peoples R China;[3]Shantou Univ, Inst Marine Sci, Shantou, Peoples R China

年份：2020

卷号：148

外文期刊名：OCEAN MODELLING

收录：SCI-EXPANDED(收录号：WOS:000521827200002)、、EI(收录号：20200908229264)、Scopus(收录号：2-s2.0-85079837460)、WOS

基金：This study received joint support from the Program for Scientific Research Start-up Funds of Guangdong Ocean University (no. 101302/R18001), the Fund of Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) (no. ZJW-2019-08), the National Key Research and Development Program of China (no. 2016YFC1401403), the National Natural Science Foundation of China (no. 41776034), and the First-class Discipline Plan of Guangdong Province (no. CYL231419012). We thank NASA for providing the MODIS SST data (http://oceancolor.gsfc.nasa.gov/), BODC for providing the GEBCO bathymetry data (https://www.bodc.ac.uk/), and ECMWF for supplying the ERA-Interim product (http://apps.ecmwf.int/datasets/).We thank the TMD team (http://volkov.oce.orst.edu/tides/) and the developers of ROMS (https://www.myroms.org/).We also gratefully acknowledge the constructive and insightful comments from two anonymous reviewers, and the professional edits from the journal language editor.

语种：英文

外文关键词：Hainan Island; MODIS; ROMS; Upwelling

外文摘要：In this study, we investigated the short-term dynamics of upwelling off the west coast of Hainan Island (UWH) by combining Moderate Resolution Imaging Spectroradiometer (MODIS) infrared sea surface temperature (SST) images and Regional Ocean Modeling System (ROMS) simulations. MODIS observations showed that the UWH could exhibit rapid temporal variations, where the SST could increase or decrease by more than 1 degrees C within 3 h. Further investigations based on ROMS simulations suggested that flood tides could rapidly intensify the UWH, whereas ebb tides could rapidly weaken the UWH. Strong horizontal advection by intense tidal currents and high vertical velocity due to divergence/convergence triggered by progressive tidal waves were identified as the intrinsic physical mechanisms responsible for the rapid SST variations in the UWH. These findings were verified based on a MODIS-observed fast-cooling UWH event and a MODIS-observed fast-warming UWH event. Analyses of the timing of occurrence, tidal phase, and spatial patterns of the significant variations in the SST for these events all agreed with the hypothesis stated above. Model-data fusion analysis indicated that when a neap tide or transition period for tidal currents occurs, the influence of the tidal flow on the UWH is weak because of the associated weak horizontal advection and divergence/convergence.