Submesoscale activity over the shelf of the northern South China Sea in summer: simulation with an embedded model |
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| Authors: | Guoqiang Liu Yijun He Hui Shen Zhongfeng Qiu |
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| Institution: | (1) Department of Oceanography, Naval Postgraduate School, Monterey, CA, 93943, U.S.A |
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| Abstract: | We applied a primitive equation ocean model to simulate submesoscale activities and processes over the shelf of the northern
South China Sea (NSCS) with a one-way nesting technology for downscaling. The temperature and density fields showed that submesoscale
activities were ubiquitous in the NSCS shelf. The vertical velocity was considerably enhanced in submesoscale processes and
could reach an average of 58 m per day in the subsurface. At this point, the mixed layer depth also was deepened along the
front, and the surface kinetic energy also increased with the intense vertical movement induced by submesoscale activity.
Thus, submesoscale stirring/mixing is important for tracers, such as temperature, salinity, nutrients, dissolved organic,
and inorganic carbon. This result may have implication for climate and biogeochemical investigations. |
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