A5056007583- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Ocean Waves and Remote Sensing
- Climate variability and models
- Geological and Geophysical Studies
- Tropical and Extratropical Cyclones Research
- Geology and Paleoclimatology Research
- Marine and fisheries research
- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Arctic and Antarctic ice dynamics
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Marine Biology and Ecology Research
- Geophysics and Gravity Measurements
- Coral and Marine Ecosystems Studies
- Marine animal studies overview
- Isotope Analysis in Ecology
- Marine Bivalve and Aquaculture Studies
- Luminescence Properties of Advanced Materials
- Marine Sponges and Natural Products
- Protist diversity and phylogeny
- Glass properties and applications
- Underwater Acoustics Research
- Phase-change materials and chalcogenides
South China Sea Institute Of Oceanology
2016-2025
Institute of Oceanology
2016-2025
Chinese Academy of Sciences
2011-2022
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2020-2022
Hohai University
2007-2008
[1] A strong upwelling off the continental shelf of northern South China Sea (SCS) in 1998 summer is reinvestigated using a suite new satellite measurements and numerical modeling. Previous studies indicate that western SCS, especially Vietnam coast, almost disappears during following El Niño because weakened southwest monsoon. This study identifies coastal adjacent SCS (NSCS) significantly strengthened summer, alongshore wind stress dramatically enhanced over region. As result, offshore...
Abstract Submesoscale density fronts and the associated processes of frontogenesis symmetric instability (SI) are investigated in northwest Pacific subtropical countercurrent (STCC) system by a high-resolution simulation diagnostic analysis. Both satellite observations realistic show active surface with horizontal scale ~20 km STCC upper ocean. Frontogenesis-induced buoyancy advection is detected to rapidly sharpen these fronts. The direct straining effect larger-scale geostrophic flows...
Abstract Persistent coastal upwelling and upwelling‐induced thermal fronts in the northwestern South China Sea are investigated using satellite measurements, two intensive mesoscale mapping surveys three bottom‐mounted ADCPs. The results indicate that pronounced surface cooling upwelling‐related with a width of 20–50 km occur around Hainan Island persist through summer season. Driven by prevailing southwesterly monsoon, subsurface band is ∼6°C colder than water offshore East Coast, where...
Abstract The submesoscale energy budget is complex and remains understood only in region-by-region analyses. Based on a series of nested numerical simulations, this study investigated the flux upper ocean Kuroshio Extension, including some innovations for examining budgets general. highest-resolution simulation ~500 m grid resolves variety instabilities allowing an energetic analysis range. frequency–wavenumber spectra vertical vorticity variance (i.e., enstrophy) horizontal divergence were...
Abstract Mesoscale and submesoscale processes have crucial impacts on ocean biogeochemistry, importantly enhancing the primary production in nutrient‐deficient regions. Yet, intricate biophysical interplay still holds mysteries. Using targeted high‐resolution situ observations South China Sea, we reveal that isopycnal stirring serves as driver of vertical nutrient transport to sustain dome‐shaped subsurface chlorophyll maximum (SCM) within a long‐lived cyclonic mesoscale eddy. Density...
Abstract The diurnal variability of mixed layer (ML) overturning instabilities remains poorly understood due to the challenge in capturing their rapid evolutions across large spatiotemporal ranges. Using high‐resolution data from 52 gliders South China Sea, we examine modulations ML instabilities. results 3‐month field observation show that negative potential vorticity occupies ∼16% and facilitates several types forced instabilities, especially symmetric instability (SI). Surface heat fluxes...
Abstract Phytoplankton, the main contributor to ocean carbon and nitrogen fixation, responds rapidly physicochemical changes caused by hydrodynamics. To understand response of phytoplankton community succession monsoon‐driven hydrographic changes, we analyzed environmental data four cruises in southern South China Sea (SSCS) during different monsoon periods. The results revealed that communities interval (MI) period significantly differed from those Specifically, exhibited highest diversity...
Luhuitou fringing reef, which has been seriously affected by human activities and terrestrial runoff, degraded quickly in recent decades. However, direct impact hyperthermal stress probably minimal because of the influence Qiongdong upwelling summer. Seawater temperature anomalies 2010 resulted mean monthly seawater temperatures summer to be 1–2°C higher than same period 3 preceding years. Moderate coral bleaching at reef was observed due high thermal stress. Montipora most susceptible...
Abstract Mesoscale eddies are ubiquitous in the global ocean and can be captured by marine multichannel seismic surveys. In this study, a short‐lived anticyclonic eddy is characterized along line STEEP11 acquired on 30 September 2008 northern Gulf of Alaska. Fine‐scale stratification with alternative strong striae weak layers regarded as typical structure study region. The center dips NW tilted axis 1.9 ± 0.2° from horizontal. Submesoscale structures including fronts filaments coexist around...
Abstract Seasonal thermal fronts associated with wind‐driven coastal downwelling/upwelling in the northern South China Sea are investigated using satellite measurements and three repeated fine‐resolution mapping surveys winter, spring, summer. The results show that vigorous develop over broad shelf variable widths intensities different seasons, which tend to be approximately aligned 20–100 m isobaths. Driven by prevailing winter/summer monsoon, band‐shaped were observed a magnitude exceeding...
Abstract Submesoscale dynamics below the mixed layer (ML) and their mechanisms are still unclear. By a series of nested simulations in Pacific Northwest with high horizontal resolution ∼500 m, this study reveals that there exist strong submesoscale ageostrophic motions upper pycnocline Kuroshio Extension region. These exhibit enhanced lateral buoyancy gradient vigorous vertical velocity but weak vorticity distinct from ML activities. The high‐resolution simulation reaches tens meters per...
Abstract The eddy‐abundant circulation in the northern South China Sea (NSCS) tends to be dynamically complex due monsoon forcing, Kuroshio intrusion, and emitted internal waves from Luzon Strait. This study uses 13‐year shipboard acoustic Doppler current profiler measurements (2004–2016), orbital altimeter data, high‐resolution model output perform wave‐vortex decompositions investigate scale of transition dominantly geostrophic flows wave motions Sea. upper ocean kinetic energy spectra on...
Abstract Clarifying contributions to the surface mixed layer (SML) dissipation from dynamic processes including winds, waves, buoyancy forcing and submesoscales is of significance for quantifying exchanges between atmosphere ocean. Based on two observation sections across an anticyclonic eddy in South China Sea, different SML rate turbulence are quantified. The potential vorticity indicates instability events symmetric (SI), gravitational centrifugal at eddy. Despite a dominant role wind‐...
Abstract Intrathermocline eddies (ITEs), characterized by subsurface lens-shaped low potential vorticity (PV), are pervasive in the ocean. However, abundance and generation mechanisms of these low-PV lenses poorly understood owing to their weak surface signals awkward sizes, which present an observational barrier. Using situ observations northern South China Sea (NSCS), a typical ITE with PV at core depth 30–150 m horizontal size ∼150 km was captured May 2021. Combined budget analysis, we...
Abstract Oceanic motions across meso‐, submeso‐, and turbulent scales play distinct roles in vertical heat transport (VHT) between the ocean's surface its interior. While it is commonly understood that during summertime enhanced stratification due to increased solar radiation typically results an reduced upper‐ocean exchange, our study reveals a significant upward VHT associated with submesoscale fronts (<30 km) through high‐resolution observations eddy‐active South China Sea. The...
Abstract Seven seasonal moorings distributed over the shelf and slope east of Hainan Island south western Guangdong Province are used to investigate characteristics barotropic baroclinic tides in northwestern South China Sea (NWSCS). The K 1 current intensified during summer sites. diurnal much more prominent than semidiurnal at each mooring site. Over continental shelf, accompanied by large phase speeds wavelengths, significantly enhanced whereas they decrease minimum values winter when...
Abstract The Mariana Ridge is one of the prominent mixing hotspots open ocean. high-resolution underway marine seismic reflection technique provides an improved understanding spatiotemporal continuous map ocean turbulent mixing. Using this novel technique, study quantifies diapycnal diffusivity subthermocline (300–1200-m depth) turbulence around Ridge. autotracked wave fields on images allow us to derive dissipation rate ε and K ρ based Batchelor model, which relates horizontal slope spectra...
Abstract. In this paper, the performance of two operational ocean forecasting systems, global Mercator Océan (MO) Operational System, developed and maintained by in France, regional South China Sea Forecasting System (SCSOFS), National Marine Environmental Center (NMEFC) China, have been examined. Both systems can provide science-based nowcast/forecast products temperature, salinity, water level, circulations. Comparison validation circulations, structures temperature some mesoscale...
Abstract Ocean vertical velocity ( w ) plays a key role in regulating the exchanges of mass, heat and nutrients between surface deep ocean. However, direct observation remains difficult due to its small magnitude large spatiotemporal variability. Therefore, fields are generally diagnosed using dynamic‐based methods. In this study, we developed neural network (DNN) reconstruct three‐dimensional ocean based on sea height (SSH) fields. Compared methods, DNN shows improved performance...