Journal of East China Normal University(Natural Sc ›› 2018, Vol. 2018 ›› Issue (4): 184-194.doi: 10.3969/j.issn.1000-5641.2018.04.018

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Characteristics of sea surface temperature in the Changjiang Estuary and adjacent waters based on a Self-Organizing Map

BAI Mei, WU Hui   

  1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
  • Received:2017-09-12 Online:2018-07-25 Published:2018-07-19

Abstract: Sea surface temperature (SST) in the Changjiang Estuary and adjacent waters is affected by multiple dynamic processes, which show complex spatiotemporal variability. In this study, the SST variability was investigated by analyzing modeled results with a Self-Organizing Map (SOM) method. The SST variations were clustered on seasonal, spring-neap, and intra-tidal timescales. It was found that the SST pattern remains stable during the winter and summer seasons but highly variable during the spring and autumn seasons. A cold water band is present south of the Changjiang River mouth in the winter season, due to the southward along-shore extension of the Changjiang River plume. A cold water patch occurs near the Zhoushan Islands, caused by upwelling in the Zhejiang coastal water. In the Subei coastal water, the cold water patch and tongues were most significant during the winter and spring seasons.

Key words: Changjiang Estuary, SOM neural network, sea surface temperature

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