气候变化领域集成服务门户(CCPortal): Transport of Oil Droplets in the Upper Ocean: Impact of the Eddy Diffusivity

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DOI	10.1029/2019JC015727
	Transport of Oil Droplets in the Upper Ocean: Impact of the Eddy Diffusivity
	Boufadel M.; Liu R.; Zhao L.; Lu Y.; Özgökmen T.; Nedwed T.; Lee K.
发表日期	2020
ISSN	21699275
卷号	125 期号:2
英文摘要	The transport of oil droplets following a surface oil spill was investigated using a uniform vertical eddy diffusivity model and the K-profile parameterization model, which assumes a maximum K value at 1/3 depth of the mixed layer. The initial droplet size distribution was obtained based on the Delvigne and Sweeney (1988, https://doi.org/10.1007/s13131-013-0364-7) model. Using a uniform eddy diffusivity Kave, an exact analytical solution was used to produce the transient and steady state profile of the concentration of droplets of all sizes. It was found that the concentration at the surface is proportional to the droplet rise velocity and inversely proportional to Kave. Thus, small droplets (smaller than 100 μm) do not persist at the water surface. It was found that K-profile parameterization produces smaller concentrations at the water surface than the uniform K model. The impact of waves was introduced into the K-profile parameterization model through a roughness height, zo, that is comparable to the wave height. The investigation herein reveals that the Delvigne and Sweeney approach, commonly used in oil spill modeling, is not sufficient to predict the oil droplet size distribution, and that one needs to use a vertical eddy diffusivity to accurately predict the transport in the following hours and days. A new dimensionless formulation was provided to generalize the results, and showed that transport depends on three major parameters, the water friction speed, the mixed layer depth, and the droplet diameter. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Droplet size distribution; Eddy diffusivity; KPP model; Lagrangian particle tracking
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186975
作者单位	Center for Natural Resources, The New Jersey Institute of Technology, Newark, NJ, United States; Upstream Research Company, ExxonMobil, Houston, TX, United States; Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada; Department of Ocean Sciences, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Coral Gables, FL, United States
推荐引用方式 GB/T 7714	Boufadel M.,Liu R.,Zhao L.,et al. Transport of Oil Droplets in the Upper Ocean: Impact of the Eddy Diffusivity[J],2020,125(2).
APA	Boufadel M..,Liu R..,Zhao L..,Lu Y..,Özgökmen T..,...&Lee K..(2020).Transport of Oil Droplets in the Upper Ocean: Impact of the Eddy Diffusivity.Journal of Geophysical Research: Oceans,125(2).
MLA	Boufadel M.,et al."Transport of Oil Droplets in the Upper Ocean: Impact of the Eddy Diffusivity".Journal of Geophysical Research: Oceans 125.2(2020).