Article
Remote Sensing
Jia-Yi Lin, Zhe-Wen Zheng, Quanan Zheng, Ding-Rong Wu, Ganesh Gopalakrishnan, Chung-Ru Ho, Jiayi Pan, Yu-Chun Lin, Ling-Ling Xie
Summary: This study proposes a new mechanism of Kuroshio Intrusion passing through the Luzon Strait based on satellite observations. The statistical analysis shows that 82% of the observed cyclonic eddy impingement events led to consequential effects on the Luzon Strait. Further analysis reveals the detailed physical exchange processes and the role of planetary vorticity in influencing the Kuroshio.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Microbiology
Ping Sun, Silu Zhang, Ying Wang, Bangqin Huang
Summary: The study showed that Kuroshio intrusion has a significant impact on the ciliate community in the northern South China Sea, with environmental factors playing a marginal role. Taxonomically diverse ciliates, mainly belonging to classes Spirotrichea and Phyllopharyngea, were sensitive to Kuroshio Current intrusion. The ciliate community exhibited differential niches in response to the Kuroshio intrusion scenarios, highlighting winner and loser species.
Article
Engineering, Marine
Hui Shen, Li Li, Jianlong Li, Zhiguo He, Yuezhang Xia
Summary: The study found that high salinity often occurs at the subsurface salinity maximum in the northern South China Sea, especially near the Luzon Strait in winter, while it tends to be located in deeper waters in summer. This suggests that outer sea water gradually mixes with South China Sea water after passing through the Luzon Strait. Factors such as the strength of the Kuroshio intrusion, local wind stress curl, and anticyclonic eddies play important roles in the appearance and distribution of anomalously high salinity in the subsurface salinity maximum in this region.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Review
Oceanography
Guizhi Wang, Shengyao Sun, Ehui Tan, Liwen Chen, Lifang Wang, Tao Huang, Kuanbo Zhou, Weifang Chen, Xianghui Guo
Summary: The study investigated the intrusion path of the Kuroshio through the Luzon Strait into the northern South China Sea, revealing that the surface seawater in the northern SCS is mainly comprised of Kuroshio water, plume water, and island-influenced surface water. The fraction of Kuroshio water in the northern SCS ranges from 4% to 51%, with an average of 23%, and the intrusion extends as far west as 115 degrees E and as far south as 14 degrees N.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Oceanography
Xiangpeng Wang, Yan Du, Yuhong Zhang, Aimei Wang, Tianyu Wang
Summary: This study investigated two processes of high-salinity water intrusion in the northeastern South China Sea during fall-winter of 2015/2016 using data from Argo float, satellite altimetry, and reanalysis. The results showed that eddy pairs and the interior circulation of the South China Sea jointly affected the transport of high-salinity water.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Yongfeng Qi, Huabin Mao, Yan Du, Xianpeng Li, Zhou Yang, Ke Xu, Ying Yang, Wanxuan Zhong, Fuchang Zhong, Linghui Yu, Huanlin Xing
Summary: This study reports an abnormal anticyclonic eddy with a lens-shaped structure and shallower mixed-layer depth, which may have potential implications for biogeochemistry, heat budget, and regional oceanic models in the northern South China Sea.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Feipeng Wang, Bangqin Huang, Yuyuan Xie, Shujie Cai, Xiuxiu Wang, Jingli Mu
Summary: Through DNA and RNA surveys, Dinophyceae was found to be the most diverse and abundant nanoeukaryotic group during the study period. The relative read abundance of MAST, Pelagophyceae, and Dinophyceae in the size fraction of picoeukaryotes may be largely underestimated by DNA survey. Environmental filtering and sampling depth were important factors in shaping the community structure under the environmental setting of stratification.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Mengyang Liu, Yongcheng Ding, Peng Huang, Haowen Zheng, Weimin Wang, Hongwei Ke, Fajin Chen, Lihua Liu, Minggang Cai
Summary: The intrusion of the Kuroshio has an impact on the abundance and composition of microplastics in the South China Sea, but it is not the dominant influencing factor. The effects of the Kuroshio intrusion appear to be a combination of dilution and biogeochemical influences. Further research is needed to understand the comprehensive impact of Kuroshio intrusion on microplastics fate in the Western Boundary Current system.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Marine
Danyang Li, Shuang Yang, Yuqiu Wei, Xingzhou Wang, Yingjie Mao, Congcong Guo, Jun Sun
Summary: This study investigates the variability of size-fractionated chlorophyll a biomass and its relationship with upwelling, Kuroshio, and nutrients in the northeastern South China Sea. The results show that nano-Chl a contributes more to the total Chl a biomass and that upwelling and Kuroshio play important roles in the distribution of chlorophyll a.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Oceanography
Xincheng Zhang, Zhiwei Zhang, James C. McWilliams, Zhongbin Sun, Wei Zhao, Jiwei Tian
Summary: This study focuses on two oppositely rotating submesoscale coherent vortices (SCVs) in the northeastern South China Sea, analyzing their core positions, rotation directions, velocities, etc. It suggests that SCVs may be generated through current-topography interaction and are common in the northeastern South China Sea, potentially providing a novel route for tracer exchange between this region and the western Pacific.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Jianan Liu, Jinzhou Du, Ying Wu, Sumei Liu
Summary: The distribution of radioisotopes Ra-226 and Ra-228 in the surface and water column of the northern South China Sea was investigated to understand oceanic mixing and nutrient supplies. The findings highlight the significant role of water mixing and the Pearl River plume in nutrient sources in the study area.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Yikai Yang, Lili Zeng, Qiang Wang
Summary: Eddy-induced transport through the Luzon Strait significantly impacts the physical and biological properties of the South China Sea. Comprehensive evaluation of eddy-induced volume, heat, and salt transport highlights the non-negligible role of eddies in water exchange through the Luzon Strait.
Article
Oceanography
Wenbo He, Zhigang Lai, Wenfang Lu, Dongdong Li, Changsheng Chen
Summary: The rapid economic developments in countries surrounding the South China Sea have caused a significant increase in the atmospheric deposition of nitrogen into the ocean. The impact of this nitrogen deposition on the regional ecosystem and its driving mechanism have not been fully studied. This study highlights the importance of nitrogen deposition in the regional ecosystem and the need for better representation in biogeochemical modeling.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Zhenyu Sun, Jianyu Hu, Zhaozhang Chen, Jia Zhu, Longqi Yang, Xirong Chen, Xuewen Wu
Summary: Multiple remote sensing datasets and in-situ drifter observations were used to analyze the intrusion of the Kuroshio through the Luzon Strait in winter 2020-2021. Results showed the existence of a strong Kuroshio Current Loop and accompanying anticyclonic eddy, with the Kuroshio Warm Eddy Index exhibiting low values compared to historical records. Kinematic properties of the eddy and wind forcing were identified as primary mechanisms influencing the event.
Article
Oceanography
Xuan Cui, Dezhou Yang, Chaojiao Sun, Xingru Feng, Guandong Gao, Lingjing Xu, Baoshu Yin
Summary: A modified analytical solution was developed to simulate the flow pattern of the Kuroshio intrusion northeast of Taiwan, maintaining horizontal momentum balance. The new model accurately predicts the direction of the Kuroshio intrusion and aligns well with observational data, offering potential applications in regions with different flow patterns.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Meteorology & Atmospheric Sciences
Jin Liu, Dongxiao Wang, Tingting Zu, Ke Huang, Oscar Y. W. Zhang
Summary: Based on 12 years of salinity data, significant positive salinity anomalies were found in the central tropical Indian Ocean. Ocean dynamic processes played a more important role than surface buoyancy fluxes in causing these anomalies. These high salinity anomalies reflect the response of the upper ocean to climate events and may impact regional air-sea interactions and large-scale processes.
Article
Engineering, Environmental
Yunxue Li, Sitong Liu, Zhiyong Ji, Jun Sun, Xianhua Liu
Summary: This study systematically investigated the sorption behavior of two typical microplastics (PVC and PE) to Zn(II) and their combined toxic effects on Chlorella vulgaris. The results showed that different microplastics exhibited different adsorption capacities for Zn(II) and the combined exposure to Zn(II) and microplastics had distinct effects on cell growth and oxidative stress.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Yuqiu Wei, Dongsheng Ding, Ting Gu, Yong Xu, Xuemei Sun, Keming Qu, Jun Sun, Zhengguo Cui
Summary: Data on the independent or combined effects of ocean acidification and warming on coastal eutrophication and organic pollution are limited. Acidification favors eutrophication and organic pollution, while warming inhibits these two variables. However, the interaction between acidification and warming in the future may exacerbate organic pollution but mitigate eutrophication.
MARINE POLLUTION BULLETIN
(2023)
Review
Oceanography
Yiling Zheng, Wentao Ma, Yuntao Wang, Zhongfang Liu, Peng Xiu
Summary: The South China Sea's carbon cycle and biogeochemical processes are influenced by the advective supply of dissolved organic carbon (DOC) from the open ocean. However, there is limited quantitative research on DOC exchange across different straits and the shelf of the South China Sea. This study used a coupled physical-biogeochemical model to investigate seasonal DOC transport across major straits and cross-shelf breaks. The results showed that the monsoon largely controls the seasonal variations in DOC transport through the major straits. This study provides important insights into the carbon cycle in the South China Sea.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Xuancheng Lu, Jun Wen, Dongxiao Wang, Wenhui Liu, Yue Yang, Hui Tian, Yueyue Wu, Yuqin Jiang
Summary: In this study, the contribution of horizontal thermal advection to the near-surface energy closure in the alpine wetland of Zoige, China was analyzed using eddy covariance data and WRF modeling data. The results showed that the average horizontal heat advection of the wetland was 20.2 W center dot m(-2), with a maximum value of 55.0 W center dot m(-2) in the summer of 2017. The introduction of thermal advection increased the near-surface energy closure ratio from 72.3% to 81.0%.
Article
Biology
Satheeswaran Thangaraj, Jun Sun
Summary: Physiological experiments on Heterosigma akashiwo provide insights into the metabolic changes of algal blooms under future warming and acidification of the ocean. Despite the expected increase in harmful algal species due to ocean warming and acidification, the population of Heterosigma akashiwo has decreased. However, the physical and metabolic modifications of this species in terms of C:N:P ratio and macromolecule accumulation are still unknown.
COMMUNICATIONS BIOLOGY
(2023)
Article
Environmental Sciences
Xinze Shuwang, Guodong Zhang, Danyang Li, Yujian Wen, Guicheng Zhang, Jun Sun
Summary: This study investigated the effects of human activity-induced environmental heterogeneity on the chromophytic phytoplankton in Bohai Bay. The results showed that human disturbance had a greater impact on the phytoplankton communities than natural factors. The assembly of the communities was influenced by both stochastic and deterministic processes, with different importance rankings in nearshore and offshore areas. Dissolved inorganic nitrogen, eutrophication index, and chemical oxygen demand were the main environmental factors affecting the phylogenetic turnover of the phytoplankton.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Yang Liu, Xiaofang Liu, Yi Long, Yujian Wen, Chao Ma, Jun Sun
Summary: This study investigates the molecular composition and component characteristics of marine dissolved organic matter (DOM) in the eastern Indian Ocean. It reveals the presence of thousands of individual DOM formulas, including recalcitrant compounds and stable components. The study also uncovers a shift in the composition of DOM with depth, indicating the aging of the water column.
Article
Environmental Sciences
Hui Shi, Yao Luo, Fenghua Zhou, Chunhua Qiu, Dongxiao Wang, Zhenqiu Zhang
Summary: The study of surface wave occurrence and characteristics is of great importance in the Pearl River Estuary for various human activities. The wave system in the estuary deviates from the assumption of a stationary stochastic process due to abnormal waves caused by human activities. Ship wakes were identified as the cause of these abnormal waves, and they are an important component of the wave system in the Pearl River Estuary.
Article
Oceanography
Ke Huang, Dongxiao Wang, Yun Qiu, Ying Wu, Kexiu Liu, Bohua Huang, Dandan Sui
Summary: This study investigates the latitudinal width variability of near-equatorial zonal currents in the upper Indian Ocean and the underlying causes. The results show that the variability of these currents has both seasonal and interannual differences, and it is influenced by anomalous wind forcing. The near-equatorial zonal currents are asymmetrically responsive to the Indian Ocean Dipole (IOD) and are closely related to changes in ocean temperature.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Wenzhuo Yan, Zhuo Chen, Linlin Zhang, Feng Wang, Guicheng Zhang, Jun Sun
Summary: This study used the Utermohl method and carbon volume conversion to investigate the composition and distribution of phytoplankton in the western Tropical Pacific Ocean. Four primary groups of phytoplankton were identified: dinoflagellates (181 species), diatoms (73 species), cyanobacteria (4 species), and chrysophyceae (2 species). Clustering analysis revealed that phytoplankton could be classified into four groups based on their composition, which were closely related to ocean currents. The study also found that diatoms were abundant in areas influenced by current-seamount interaction, while areas with little influence from ocean currents were dominated by Trichodesmium. The majority of phytoplankton had an equivalent spherical diameter (ESD) of 2-12 μm, with some exceeding 25 μm. Nanophytoplankton (ESD = 2-20 μm) dominated cell abundance, but microphytoplankton (ESD = 20-200 μm) contributed significantly to carbon biomass (792.295 mg m(-3)). This study provides valuable insights into the distribution and composition of phytoplankton in the western Tropical Pacific Ocean and their relationship with ocean currents, as well as fundamental information regarding cell size and carbon biomass within the region.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Ziming Wang, Dai Jia, Shuai Song, Jun Sun
Summary: Given the threat to water quality from human activities, it is necessary to identify and quantify potential pollution sources for water pollution control. Multivariate methods were used to assess water quality in the Yuqiao Reservoir and surrounding rivers, and identified seven main pollution sources including cities, rural districts, industries, weather, fertilizers, upstream areas, and vehicles. The results showed that upstream and urban districts were the major contributors to pollution. The study also compared positive matrix factorization (PMF) and absolute principal component scores and multiple linear regression (APCS-MLR) modeling, with APCS-MLR performing better.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Xiaogang Xing, Peng Xiu, Edward A. Laws, Guo Yang, Xin Liu, Fei Chai
Summary: The dynamics of subsurface chlorophyll maximum depth (zSCM) are mainly driven by light in subtropical gyres, but occasionally display a nutrient-driven pattern when the top of nitracline (znit) becomes shallower than an isolume depth (ziso). This study proposes a two-group competition framework where zSCM is determined by the dominance of nutrient-sensitive picoeukaryotes or light-sensitive Prochlorococcus. This reconciles previous inconsistent conclusions and highlights the importance of the interaction between light and nutrient availability.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Yiyan Guo, Chao Wu, Zhi Wang, Yifeng Shi, Jun Sun
Summary: This study provides preliminary insights into the distribution patterns of bacterial communities and metal resistance genes in the coastal sediments of Bohai Bay, laying the groundwork for understanding microbial community adaptations and supporting ecological restoration efforts in multi-metal polluted environments.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geosciences, Multidisciplinary
Zhibo Shao, Yangchun Xu, Hua Wang, Weicheng Luo, Lice Wang, Yuhong Huang, Nona Sheila R. Agawin, Ayaz Ahmed, Mar Benavides, Mikkel Bentzon-Tilia, Ilana Berman-Frank, Hugo Berthelot, Isabelle C. Biegala, Mariana B. Bif, Antonio Bode, Sophie Bonnet, Deborah A. Bronk, Mark V. Brown, Lisa Campbell, Douglas G. Capone, Edward J. Carpenter, Nicolas Cassar, Bonnie X. Chang, Dreux Chappell, Yuh-ling Lee Chen, Matthew J. Church, Francisco M. Cornejo-Castillo, Amalia Maria Sacilotto Detoni, Scott C. Doney, Cecile Dupouy, Marta Estrada, Camila Fernandez, Bieito Fernandez-Castro, Debany Fonseca-Batista, Rachel A. Foster, Ken Furuya, Nicole Garcia, Kanji Goto, Jesus Gago, Mary R. Gradoville, M. Robert Hamersley, Britt A. Henke, Cora Horstmann, Amal Jayakumar, Zhibing Jiang, Shuh-Ji Kao, David M. Karl, Leila R. Kittu, Angela N. Knapp, Sanjeev Kumar, Julie LaRoche, Hongbin Liu, Jiaxing Liu, Caroline Lory, Carolin R. Loscher, Emilio Maranon, Lauren F. Messer, Matthew M. Mills, Wiebke Mohr, Pia H. Moisander, Claire Mahaffey, Robert Moore, Beatriz Mourino-Carballido, Margaret R. Mulholland, Shin-ichiro Nakaoka, Joseph A. Needoba, Eric J. Raes, Eyal Rahav, Teodoro Ramirez-Cardenas, Christian Furbo Reeder, Lasse Riemann, Virginie Riou, Julie C. Robidart, Vedula V. S. S. Sarma, Takuya Sato, Himanshu Saxena, Corday Selden, Justin R. Seymour, Dalin Shi, Takuhei Shiozaki, Arvind Singh, Rachel E. Sipler, Jun Sun, Koji Suzuki, Kazutaka Takahashi, Yehui Tan, Weiyi Tang, Jean-Eric Tremblay, Kendra Turk-Kubo, Zuozhu Wen, Angelicque E. White, Samuel T. Wilson, Takashi Yoshida, Jonathan P. Zehr, Run Zhang, Yao Zhang, Ya-Wei Luo
Summary: This study presents an updated version (version 2) of the global oceanic diazotroph database, which significantly increases the number of in situ diazotrophic measurements and provides more detailed insights into nitrogen fixation in the global ocean. Version 2 yields significantly higher estimates of nitrogen fixation rates compared to version 1, particularly in the South Pacific and North Atlantic regions. Furthermore, additional data sheets for non-cyanobacterial diazotrophs and cell-specific N2 fixation rates have been included in version 2, enhancing the database's comprehensiveness.
EARTH SYSTEM SCIENCE DATA
(2023)
