| Bai Peng,Yang Jingling,Zhang Shuwen,Xie Lingling,Wu Junshan. 2019. Upwelling off the west coast of Hainan Island: sensitivity to wave-mixing. Acta Oceanologica Sinica, 38(11):11－19 |
| Upwelling off the west coast of Hainan Island: sensitivity to wave-mixing |
| 海南岛西岸上升流对波浪混合的敏感性研究 |
| Received:April 26, 2018 |
| DOI：10.1007/s13131-019-1494-3 |
| Key words:upwelling|wave-mixing|tidal mixing front|COAWST|Hainan Island |
| 中文关键词: 上升流 波浪混合 潮混合锋 COAWST 海南岛 |
| 基金项目:The Program for Scientific Research Start-up Funds of Guangdong Ocean University under contract No. 101302/R18001; the National Key Research and Development Program of China under contract No. 2016YFC1401403; the National Natural Science Foundation of China under contract Nos 41476009 and 41776034. |
| Author Name | Affiliation | E-mail | | Bai Peng | Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China | | | Yang Jingling | Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China | yjl_ocean@163.com | | Zhang Shuwen | Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China | | | Xie Lingling | Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China | | | Wu Junshan | East China Sea Bureau of Ministry of Natural Resources, Shanghai 200137, China | |
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| Abstract: |
| The coupled ocean–atmosphere–wave–sediment transport (COAWST) modeling system is employed to investigate the role of wave-mixing playing in the upwelling off the west coast of Hainan Island (WHU). Waves, tides and sea surface temperature (SST) are reproduced reasonably well by the model when validated by observations. Model results suggest the WHU is tidally driven. Further investigations indicate that inclusion of wave-mixing promotes the intensity of the WHU, making the simulated SST become more consistent with remote-sensed ones. Dynamically, wave-mixing facilitates the “outcrop” of more upwelled cold water, triggering stronger WHU and leading to a three-dimensional dynamical adjustment. From the perspective of time, wave-mixing contributes to establishing an earlier tidal mixing front strong enough to generate WHU and that is, WHU may occur earlier when taking wave-mixing into consideration. |
| 中文摘要: |
| 本文利用COAWST数值模式探讨了波浪混合在海南岛西岸上升流系统中扮演的动力角色。经实测数据验证，模型可较准确的反应研究海区内波浪、潮汐、海表面温度等特性。模拟结果显示该上升流为潮致上升流。进一步的研究表明波浪混合可将更多的上涌冷水搅拌至海表，进而提升海南岛西岸上升流的强度，使得模拟海表面温度更贴近实测。此外，波浪混合有助于更早的建立起强度足以激发上升流的潮混合锋，即在考虑波浪混合的前提下，海南岛西岸上升流可能更早发生。 |
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