My current research is focused on marginal sea (including the South China Sea and the East China Sea) multiscale dynamic processes based on pressure recording inverted echo sounders (PIES). I have participated in many cruises deploying and recovering numerous PIESs in the South China Sea including the first PIES observation by China. Under the joint efforts of our team, we have achieved the largest concurrent PIES observation ever recorded in the marginal Seas. My main achievements are all established on PIES observations, including the research on the South China Sea western boundary current (SCSWBC), which quantified its long-term volume transport, assessed the roles of monsoon and mesoscale eddies, and reported the weakest winter SCSWBC under the impact of strong El Nino event; the research on oceanic bottom pressure, which investigated the dynamic mechanism of the near 5-day and near 7-day bottom pressure variability of the SCS; the research on internal tides of the northwestern SCS, which demonstrated the spatial and temporal pattern of diurnal and semidiurnal internal tides, and discussed their possible origins; the research on the Ryukyu Current, which confirmed the existence and revealed the characteristics of the Ryukyu Current in that upstream region near Miyakojima Island.

Dalian Maritime University, Marine Science, Bachelor of Science (2006-2010)
Insitiute of Oceanology, Chinese Academy of Sciences, Master of Engineering (2010-2013)

1. Oceanic bottom pressure variability and its comparison with GRACE satellite products in the South China Sea. National Science Foundation of China (41806020).
2. The interaction between the South China Sea western boundary current and mesoscale eddies. Zhejiang Provincial Natural Science Foundation of China (LQ17D060003).
3. Research on multiscale dynamic processes in the Luzon Strait from inverted echo sounders observations. The Scientific Research Fund of Second Institute of Oceanography, MNR (QNYC2102).
4. The research on internal tides of northeastern South China Sea based on pressure-recording inverted echo sounder observations. The Project of State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography (SOEDZZ2106).
5. The research on oceanic bottom pressure of the South China Sea based on pressure-recording inverted echo sounder observations. The Project of State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography (SOEDZZ1806).

1. Zhao, R., X.-H. Zhu, J.-H. Park, and Q. Li (2018), Internal tides in the northwestern South China Sea observed by pressure-recording inverted echo sounders, Prog. Oceanogr., 168, 112–122, doi: 10.1016/j.pocean.2018.09.019.
2. Zhao, R., X.-H. Zhu, and J.-H. Park (2017), Near 5-day nonisostatic response to atmospheric surface pressure and coastal-trapped waves observed in the northern South China Sea, J. Phys. Oceanogr., 47(9), 2291–2303.
3.Zhao, R., and X.-H. Zhu (2016), Weakest winter South China Sea western boundary current caused by the 2015–2016 El Niño event, J. Geophys. Res. Oceans, 121, doi:10.1002/ 2016JC012252.
4. Zhao, R., H. Nakamura, X.-H. Zhu, et al. (2020), Tempo-spatial variations of the Ryukyu Current southeast of Miyakojima Island determined from mooring observations, Sci. Rep., 10(1), doi: 10.1038/s41598-020-63836-5.
5. Zhao, R., X.-H. Zhu, and X. Guo (2017), The impact of monsoon winds and mesoscale eddies on thermohaline structures and circulation patterns in the northern South China Sea, Cont. Shelf Res., 143, 240–256, doi:10.1016/j.csr.2016.06.009.