Abstract Sediment oxygen consumption (SOC) is important in modulating the budget East China Sea where seasonal hypoxia occurs. Porewater advection, molecular diffusion and bioturbation supply for sedimentary organic matter degradation. A pelagic‐benthic coupled model was applied to quantify SOC. comparison with observations showed good performance reproducing hydrographic ecological environments, particularly interannual variation hypoxic zone. Simulation results show that...

Abstract Effects of aquaculture on hydrodynamics and associated nutrient supply in a typical area the coastal Yellow Sea are investigated with high‐resolution model experiments situ data. The results show significant reduction supply, which is alternations three hydrodynamic conditions: onshore current across outer‐boundary area, upwelling within offshore (depth >10 m) water exchange near‐coastal <10 area. First, bottom layer boundary, transports high‐concentration nutrients from major...

Abstract. The seasonal mean and synoptic fluctuation of the wintertime Taiwan Warm Current (TWC) were investigated using a well-validated finite volume community ocean model. spatial distribution dynamics highlighted. TWC has two branches: an inshore branch between 30 100 m isobaths offshore 200 isobaths. Coriolis term is much larger than inertia almost balanced by pressure gradient in both branches, indicating geostrophic balance current. Two areas with significant fluctuations identified...

Abstract The barrier layer (BL) significantly impacts the upper ocean circulation and thermodynamic structure by inhibiting heat momentum exchange between mixed (ML) subsurface layer. There exist sea surface temperature salinity dipole modes in tropical Indian Ocean, however, a BL mode has not yet been identified. Using latest observations reanalysis, here we show robust central eastern equatorial which is highly correlated with Ocean Dipole (IOD) events. Composite analysis shows that...

The discovery of cyclonic and dipole eddies in the Mozambique Channel (MC) indicates that understanding mesoscale eddy characteristics MC is incomplete. distributions anticyclonic, cyclonic, along were elucidated this study using satellite observations. It was observed these exhibit a preference for emergence movement western MC. occurrence frequencies anticyclonic are four three times per year, respectively, narrowest section In contrast, frequency reaches its peak at nine year central...

Abstract Combining satellite altimetry and in situ hydrographic measurement, we estimated the cross‐shelf transport (CST) its spatial temporal variations across 200 m isobath East China Sea (ECS) from 1993 to 2014. The vertically integrated CST can be dynamically divided into three parts: surface Ekman transport, geostrophic bottom transport. results show that 22 year‐mean, sectionally 1.7 ± 2.0 Sv (positive on‐shelf direction), comprised of transports 2.7 1.0 0.6 Sv, respectively, are...

Abstract Eddy-induced heat transport (EHT) in the South China Sea (SCS) is important for budget. However, knowledge of its variability limited owing to discrepancies arising from limitation down-gradient method and uncertainties numerical models. Herein, we investigated spatiotemporal dynamics EHT using a well-validated assimilated model. In particular, southeast Vietnam (SEV) west Luzon Strait (WLS), significant values annual mean are observed most confined upper 400 m. also exhibits...

Abstract Based on velocity and nutrient data from satellite in situ measurements, we studied the temporal spatial variations for 22‐year (1993–2014) cross‐shelf exchange at 200‐m isobath section East China Sea. Since nitrate phosphate concentrations were highly correlated (correlation coefficient of 0.95), only transport was investigated detail. The is explored whole to results show that averaged section‐integrated ( FQ ) 22.0 ± 12.4 kmol/s (+ on‐shelf direction). Its interannual variation...

Abstract The internal and ENSO-forced modes of the Indian Ocean sea surface temperature (SST) are investigated using a high-resolution regional coupled model. Five different model simulations were performed by controlling atmospheric oceanic boundary conditions (BCs), which lateral walls domain. In run prescribing climatological mean BCs, first second empirical orthogonal functions (EOF1 EOF2) mode similar to observed basin (IOB) dipole (IOD) with relatively weak amplitudes, respectively....

Abstract Coastal offshore currents transport terrestrial materials from coastal areas to continental shelf in the upper layer; these are regarded as unimportant winter when wind‐driven onshore dominant. In this paper, both long‐term observations and high‐resolution simulations East China Sea reveal unique wintertime layer that widespread 30–70‐m isobath area even overcome at 50–70‐m isobaths. The mixed instabilities, frontogenesis turbulent thermal wind, which constitute a mechanism...

Abstract Landfalling tropical cyclones (TCs) frequently occur with strong intensity in most coastal areas, and storm surges are likely to response extreme sea level (ESL) growth. However, the of ESL growth under various wind conditions, coastline geometries tide-surge interactions has not been clarified. In Pearl River Estuary Daya Bay, observations landfalling TCs have indicated an increasing frequency intense rapid landfalls 2010s as compared 2000s, accompanied by a noteworthy increase...

Abstract The interannual sea surface temperature trend of the Kuroshio in East China Sea (ECS‐Kuroshio) is significantly different from that ECS‐shelf region. Based on 33 years (1982–2014) observational data ECS, upstream ECS‐Kuroshio, as an upwelling region, shows opposite to downstream creating a horizontal “dipole” structure. Vertical heat transport modulated by variability ECS‐Kuroshio can be main factor for distinct ECS‐Kuroshio. This expand areas through advections. As result, weakened...

Abstract The meridional current in the southern Bay of Bengal (BOB) exhibits prominent intraseasonal variability (ISV), which exerts a critical influence on mass and energy exchange. However, its relationship with northward propagating monsoon oscillation (MISO), is predominant tropical Indian Ocean during summer, not well understood. Using one-year mooring deployed at 5.5 °N, 90 °E, strong ISV observed between 150 250 m exhibiting amplitudes exceeding 0.4 ms −1 periods 30–70 d. Further...

Abstract The Indian Ocean Dipole (IOD) is the predominant interannual climate mode and critical in regulating biogeochemical cycles of equatorial (EIO). However, dynamics nutrient supply magnitude biological responses are less understood. Here, by comparing biophysical situ observations across eastern EIO during decaying period a positive IOD 2019 neutral condition 2017, we identify that shoaling thermocline, initiated reinforced easterly wind, lifts nutricline into euphotic layer under...

Abstract This study explores the impact of sea surface temperature (SST) spatial heterogeneity on tropical cyclone (TC) intensity through a combination observations and simulations, aiming to provide reference for further improving TC forecasting skills. Two distinct patterns SST are identified based statistical analysis observational data, when at center is above below 29.3°C, respectively. One warm‐core pattern (WCP) with warm peak decreasing centrifugally which favors development, other...

We used daily sea surface temperature (SST) data and hourly drifter to investigate ocean responses tropical cyclone (TC) intensity outer size (wind radius of 34 kt, or R34) in the Northwest Pacific. Results showed that SST cooling is more sensitive TC R34 than intensity; namely, TCs with a larger cause stronger regardless their intensity. an ≥125 nmi could cool 0.9°C R34<125 nmi. Drifter indicated generate large current near-inertial periods. The filtered currents were calculate time...

Abstract. The seasonal mean and synoptic fluctuation of the wintertime Taiwan Warm Current (TWC) were investigated using a well validated finite volume community ocean model. spatial distribution dynamics highlighted. TWC has two branches: an inshore branch between 30 100 m isobaths offshore 200 isobaths. Coriolis term is much larger than inertia almost balanced by pressure gradient in both branches, indicating geostrophic balance current. Two areas with significant fluctuations identified...

Earth and Space Science Open Archive This work was has been accepted for publication in Other. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Eddy Heat Transport South China Sea as Estimated from In Situ an Assimilated Ocean ModelAuthors Ruibin Ding iD Jiliang Xuan Feng Zhou Tao Zhang In-Sik Kang See all authors DingiDCorresponding...