Journal
REMOTE SENSING
Volume 12, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/rs12172808
Keywords
wave-induced turbulence mixing; wave transport flux residue; typhoon; upper mixed layer; Northwest Pacific Ocean
Categories
Funding
- National Key Research Program of China [2016YFC1402004, 2017YFC1404201]
- Public Science and Technology Research Funds Projects of Ocean [201505013]
- National Natural Science Foundation of China [41106032, 41876003]
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To investigate the effect of wave-induced mixing on the upper ocean structure, especially under typhoon conditions, an ocean-wave coupled model is used in this study. Two physical processes, wave-induced turbulence mixing and wave transport flux residue, are introduced. We select tropical cyclone (TC) Nepartak in the Northwest Pacific ocean as a TC example. The results show that during the TC period, the wave-induced turbulence mixing effectively increases the cooling area and cooling amplitude of the sea surface temperature (SST). The wave transport flux residue plays a positive role in reproducing the distribution of the SST cooling area. From the intercomparisons among experiments, it is also found that the wave-induced turbulence mixing has an important effect on the formation of mixed layer depth (MLD). The simulated maximum MLD is increased to 54 m and is only 1 m less than the observed value. The wave transport flux residue shows a dominant role in the mixed layer temperature (MLT) changing. The mean error of the MLT is reduced by 0.19 degrees C compared with the control experiment without wave mixing effects. The study shows that the effect of wave mixing should be included in the upper ocean structure modeling.
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