| Shi Jian,Zhang Wenjing,Zhang Xueyan,Liu Jingdong,Liu Zhenyu. 2020. Parameterization of the sea spray generation function with whitecap coverage. Acta Oceanologica Sinica, 39(8):24－33 |
| Parameterization of the sea spray generation function with whitecap coverage |
| 基于白冠覆盖率的飞沫生成函数参数化 |
| Received:March 21, 2020 |
| DOI：10.1007/s13131-020-1618-9 |
| Key words:sea spray generation function whitecap coverage wave state |
| 中文关键词: 飞沫生成函数 白冠覆盖率 海浪状态 |
| 基金项目:The National Natural Science Foundation of China under contract No. 41676014. |
| Author Name | Affiliation | E-mail | | Shi Jian | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | | | Zhang Wenjing | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | shijian.mil@163.com | | Zhang Xueyan | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | | | Liu Jingdong | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China
Unit 91604 of the Chinese People’s Liberation Army, Longkou 265700, China | | | Liu Zhenyu | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | |
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| Abstract: |
| Sea spray droplets are produced by waves breaking on the sea surface, and they vary the transfer of energy between the atmosphere and ocean. The sea spray generation function (SSGF) is generally considered as a function of the initial radius of the spray droplets and the wind speed. However, ocean waves always exist at the air-sea interface, so it is not reasonable to consider only the effect of sea surface winds while ignoring the effects of ocean waves. Whitecap coverage is an important characteristic parameter of breaking waves, and researchers believe that this parameter is related to both wave state and wind speed. In this paper, the SSGF is parameterized by the whitecap coverage, and a new SSGF describing different droplet radii is organically integrated based on the whitecap coverage parameter. Then, with the relationship between the whitecap coverage and wave state, the influence of ocean waves on the SSGF for different wave states was analyzed by using observational data in the laboratory. The results show that the new SSGF that considers wave effects can reasonably describe the droplet generation process under different wave state conditions. |
| 中文摘要: |
| 海浪破碎使得海面产生飞沫水滴，由于飞沫水滴的存在改变着大气和海洋之间的能量传输。飞沫生产函数一般认为是水滴初始半径和风速的函数，但海浪时刻存在于海-气界面，仅仅考虑海面风的作用，而忽略海浪的影响是不够完善的。白冠覆盖率是海浪破碎的重要特征参数，有研究者发现白冠覆盖率与海面风速和海浪均存在相关性。本文尝试从白冠覆盖率出发，构建飞沫水滴的生成函数参数化方案，将描述不同飞沫水滴半径的飞沫生成函数基于白冠覆盖率参数有机整合，然后结合白冠覆盖率和海浪状态的关系，利用实验室观测数据，分析不同海浪状态条件下海浪对飞沫生成函数的影响。研究结果表明，新的考虑波浪效应的飞沫生成函数可以合理地描述不同海浪状态条件下飞沫水滴的生成过程。 |
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