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)
Article
Environmental Sciences
Wenlong Xu, Guifen Wang, Xuhua Cheng, Long Jiang, Wen Zhou, Wenxi Cao
Summary: Characterizing the vertical distribution of chlorophyll a in each oceanic region is crucial for accurate assessment of phytoplankton biomass. This study investigated the characteristics of the subsurface chlorophyll maximum (SCM) in the South China Sea during the boreal summer. The study found that the SCM layer was a prominent feature in the South China Sea during the boreal summer, with large spatial variability in its thickness, depth, and magnitude. The vertical position and magnitude of the SCM were influenced by light attenuation and physical processes. The study highlights the importance of considering ocean physical conditions and variability in accurately estimating primary production in the South China Sea.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Ying Chen, Hui Zhao
Summary: Based on data from August 2018, the study analyzed chlorophyll a concentration profiles in the Northern South China Sea, identifying 4 distinct patterns influenced by nutrient and light availability. The presence of a subsurface chlorophyll maximum was linked to surface nutrient limitations in offshore regions.
Article
Environmental Sciences
Tzong-Yueh Chen, Chao-Chen Lai, Jen-Hua Tai, Chia-Ying Ko, Fuh-Kwo Shiah
Summary: The diel surveys conducted at the South East Asian Time-Series Station from 2010 to 2014 revealed distinct distribution patterns and diel variations of picoplankton, with seasonal and temperature factors playing important roles in the biomass changes. The strong linear relationship between sea surface temperature and picophytoplankton biomass suggests the potential use of satellite-based SST to monitor picophytoplankton biomass in the pelagic areas of the South China Sea.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Jiaqian Li, Jian Lan
Summary: Based on the research findings, a distinct seasonal variation is found in the deep vertical velocity fields of the South China Sea. In summer, there is an upwelling band in the interior region of the basin, surrounded by downwelling areas in the marginal region. In winter, the vertical motion is completely reversed, with a more extended downwelling band replacing the upwelling band in summer. This seasonal variation may be related to the seasonal deepwater overflow through the Luzon Strait.
Article
Environmental Sciences
Mei-Lin Wu, You-Shao Wang, Yu-Tu Wang, Fu-Lin Sun, Xiaomei Li, Fang-Fang Gu, Jing-Chang Xiang
Summary: This study investigated the relationship between eddies and phytoplankton in the South China Sea, and found that mesoscale eddies have a significant impact on the vertical distribution pattern of chlorophyll in the South China Sea.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Michael E. Fraker, Anisha Shrestha, Lauren Marshall, Lacey Mason, Russ Miller
Summary: The study deployed an autonomous underwater glider in southern Lake Michigan to collect limnological measurements. The data revealed substantial spatial and temporal variations in mixed layer depth and light penetration, providing valuable information for future research in Great Lakes limnology.
JOURNAL OF GREAT LAKES RESEARCH
(2021)
Article
Environmental Sciences
Francois Carlotti, Olivia Gerigny, Dorian Bienvenu, Christophe Ravel, Pamela Fierro-Gonzalez, Loic Guilloux, Nouha Makhlouf, Javier Tesan Onrubia, Marc Pagano
Summary: The aim of this study was to characterize and quantify microplastics at the chlorophyll maximum layer in the western Mediterranean Sea. The study found a high density of fibers in this layer, mainly associated with aggregates, suggesting the importance of marine snow and vertical layering in future microplastic distribution modeling efforts.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Lulu Zhang, Weihai Xu, Wenying Mi, Wen Yan, Tianfeng Guo, Fenghua Zhou, Li Miao, Zhiyong Xie
Summary: The South China Sea is contaminated by organophosphate esters (OPEs) due to the consumption of flame retardants in surrounding developing countries/regions. This study found that three chlorinated OPEs have higher concentrations in the atmosphere surrounding Yongxing Island. Most OPEs show clear seasonal variations, with gas/particle partition in non-equilibrium condition and LRAT controlled by seasonal wind direction being the predominant factors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Kun Jiang, Yu Wang, Yan Sun, Jian Lan
Summary: In this study, the seasonal variation of the shallow meridional overturning circulation (SMOC) in the South China Sea (SCS) was investigated using data from the Ocean General Circulation Model for the Earth Simulator (OFES). The results show that the SMOC can be formed in both winter and summer, with a prominent seasonal variation in its structure. The winter SMOC is clockwise between 9 degrees N and 18 degrees N, while the summer SMOC is anticlockwise and confined to the southern SCS. The study also found that the monsoon is the primary driving factor for the formation and seasonal variation of the SMOC in the SCS.
Article
Environmental Sciences
Yingxian He, Peng Zhang, Fang Xu, Lirong Zhao, Jibiao Zhang
Summary: This study investigates the seasonal variation of nutrients, eutrophication patterns, and Chlorophyll a (Chl-a) response in the coastal waters adjacent to Guangdong Province. The results show significant differences in Chl-a, dissolved inorganic nitrogen (DIN), and phosphorus (DIP) concentrations among seasons. It is necessary to strengthen integrated land and sea management to mitigate eutrophication and harmful algal blooms.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Yi Xu, Ying Wu, Peng Xiu, Jianzhong Ge, Jing Zhang
Summary: The study evaluates the seasonal and interannual variability of phytoplankton in the East China Sea (ECS) and identifies the environmental determinants that drive these variations. The findings highlight the importance of the triangular area in the ECS in understanding phytoplankton dynamics, with climate-sensitive environmental drivers playing a key role in the region.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Peng Chen, Cedric Jamet, Zhenhua Zhang, Yan He, Zhihua Mao, Delu Pan, Tianyu Wang, Dong Liu, Dapeng Yuan
Summary: This study conducted quantitative measurements of the vertical distribution of subsurface phytoplankton layer in the South China Sea using airborne lidar, revealing spatial and temporal variability in the depths of these layers in Sanya Bay and near Lingshui city. Lidar technology shows great potential for wide-range and long-term monitoring of subsurface phytoplankton layers, complementing in situ observations and passive satellite remote sensing.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiaolei Chen, Xiao Ma, Xueji Gu, Sumei Liu, Guodong Song, Haiyan Jin, Guiling Zhang
Summary: Continental shelves and estuaries are important regions for the production and emission of N2O, with variations in distribution and emissions affected by temperature gradients, currents, and riverine inputs. N2O concentrations peak in spring and decrease sharply in summer and fall, with higher emissions in the ECS compared to the SYS. Sediments, especially around the Yangtze River Estuary, are identified as significant benthic N2O sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Yinxia Wang, Cuiping Zhang, Song Tian, Qidong Chen, Shan Li, Jisheng Zeng, Zheng Wei, Sumei Xie
Summary: This study investigates the seasonal properties and heat budget of marine heatwaves (MHWs) on the northern South China Sea (SCS) continental shelf. The warmest MHWs are generally observed in winter, gradually weakening in the following seasons. Different types of MHWs have been identified based on the main heat source, with air-sea heat flux dominant MHWs being the most common. Ocean advection plays a significant role in MHW development and is strongly influenced by cross-slope water exchanges along the continental shelf edge.