| WEI Zexun,SUN Junchuan,TENG Fei,XU Tengfei,WANG Yonggang,XU Xiaoqing,FANG Guohong. 2018. A harmonic analyzed parameterization of tide-induced mixing for ocean models. Acta Oceanologica Sinica, 37(7):1－7 |
| A harmonic analyzed parameterization of tide-induced mixing for ocean models |
| 海洋模式中潮致混合调和分析参数化方案的建立 |
| Received:May 09, 2018 |
| DOI：10.1007/s13131-018-1239-8 |
| Key words:tide-induced mixing harmonic analysis parameterization ocean circulation models Yellow Sea Cold Water Mass |
| 中文关键词: 潮致混合 调和分析 参数化 海洋模式 黄海冷水团 |
| 基金项目:The National Key Research and Development Program of China under contract No. 2017YFC1404201; the National Natural Science Foundation of China (NSFC) under contract Nos 41606040 and 41606036; the NSFC-Shandong Joint Fund for Marine Science Research Centers under contract No. U1606405; the National High Technology Research and Development Program (863 Program) of China under contract No. 2013AA09A506. |
| Author Name | Affiliation | E-mail | | WEI Zexun | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | weizx@fio.org.cn | | SUN Junchuan | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | TENG Fei | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | XU Tengfei | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | WANG Yonggang | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | XU Xiaoqing | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | | | FANG Guohong | The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Functional Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China | |
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| Abstract: |
| The tide-induced mixing plays an important role in the regulation of ocean circulation. Numerical simulation of continental shelf circulation is found to exhibit an unreasonable vertical thermohaline structure without consideration of tide effects. In this study, we establish a harmonic analyzed parameterization of tide-induced (HAT) mixing, by which means to derive time-depended function of mixing coefficient based on harmonic analysis of the vertical mixing coefficient. By employing HAT mixing parameterization scheme, a series of numerical experiments are conducted for the Yellow Sea. Numerical results show that an ocean circulation model with the HAT mixing involved is capable of reproducing the reasonable thermohaline structure of the Yellow Sea Cold Water Mass, similar to structures produced by explicit tidal forcing on the open boundary. The advantage of the HAT method is its faster computation time, compared with models that directly resolve explicit tidal motion. The HAT parameterization for the tide-induced mixing has potential to improve both the accuracy and efficiency of ocean circulation and climate models. |
| 中文摘要: |
| 潮致混合对海洋环流的调整起着重要作用。陆架环流的数值模拟中如果不考虑潮汐作用，往往不能得到与观测相符的垂向温盐结构。本文基于调和分析方法，建立了一套潮致混合参数化方案。该方案通过对垂向混合系数进行调和分析，从而得到随时间变化的潮致混合系数。将该方案用于黄海冷水团数值模拟的结果显示，其能够得到与在数值模式开边界直接加入潮汐强迫相当的冷水团温盐结构。和直接引入潮汐强迫相比，这一潮致混合参数化方案的优势在于，它能够大大节省数值模拟计算机时，因此有望显著提高大规模高分辨率的海洋环流及气候模式的模拟能力和计算效率。 |
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