Article
Engineering, Environmental
Xiaomei Zhong, Yongsheng Wu, Charles Hannah, Shihan Li, Haibo Niu
Summary: This study used a combination of FTLE values, residual currents, and tidal excursion lengths to investigate the effects of tidal dispersion on oil spill trajectories. The results showed that tidal type and phase significantly influenced the FTLE fields, and transport barriers formed in certain areas of the inlet. The FTLE analysis was found to be reliable for oil spill tracking and could be a valuable tool for oil spill response planning.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Marine
Jae-Soon Jeong, Seung-Buhm Woo, Han Soo Lee, Bon-Ho Gu, Jong Wook Kim, Jin Il Song
Summary: This study investigated the flow patterns and affecting factors in the North Port of Incheon, South Korea, and found that tidal currents, river discharge, surface winds, and atmospheric pressure play important roles in the circulation characteristics of the port. The study also discovered that strong stratification occurs during spring tide in the inner port, leading to changes in water composition. These findings are significant for understanding the inner-port circulation and mass transport mechanisms.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Chang He, Zhen-Yu Yin, Alessandro Stocchino, Onyx Wing Hong Wai
Summary: This study numerically investigates the flow structure and mechanism of macro-vortex generation in estuarine compound channels. It is found that the velocity magnitude in channels is significantly larger than in floodplains, resulting in a high-velocity gradient at the depth discontinuity. The distribution of macro-vortices is closely related to high vorticity regions.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Joseph Schoonover, Wilbert Weijer, Jiaxu Zhang
Summary: In this paper, we present a new offline calculation software framework called FEOTS for tracer transport in the ocean. FEOTS is a set of tools that efficiently calculates tracer distributions using transport operators diagnosed from an ocean model. This paper demonstrates the transient modeling capabilities of FEOTS in the Argentine Basin, highlighting the challenges of capturing tracer transports using a non-linear advection scheme with impulse response functions. Future work will focus on improving computational efficiency, implementing a steady-state solver, and applying FEOTS to a model with unstructured grids.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Marine & Freshwater Biology
Dongdong Chu, Haibo Niu, Ya Ping Wang, Anzhou Cao, Li Li, Yunfei Du, Jicai Zhang
Summary: The study investigated tidal duration asymmetry in the Zhoushan Archipelago area in East China and found that it is related to high-frequency harmonics of the main astronomical tides. Shallow-water tides are primarily generated by nonlinear advection and interactions in multi-island areas and shallow-waters, with the strength of asymmetry increasing from deep sea to shallow-water and multi-island areas. Sensitivity analysis showed that TDA is strongly influenced by factors such as bottom friction, island presence, advection term, and water depth changes.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Oceanography
Jing Chen, Robert H. Weisberg, Yonggang Liu, Lianyuan Zheng, Jason Law, Sherryl Gilbert, Steven A. Murawski
Summary: As a partially mixed estuary, Tampa Bay is influenced by both the adjacent Gulf of Mexico and local factors. A high resolution Tampa Bay Coastal Ocean Model (TBCOM) is modified to provide daily nowcasts and forecasts. The model accurately reproduces the estuarine circulation and provides useful information for navigation and extreme events. However, improvements are needed due to errors in the forcing functions.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2023)
Article
Ecology
Rushui Xiao, Guandong Gao, Ming Feng, James Greenwood, John Keesing, Baoshu Yin, Dezhou Yang, Xingru Feng, Lingjing Xu, Zhiliang Liu, Xianqing Lv
Summary: This study investigates the summer circulation patterns, volume balance, and mixing processes in Cockburn Sound and the adjacent shelf in Western Australia. The results show that local wind variability is the primary factor affecting the water volume in the embayment. In Cockburn Sound, a diel stratification cycle occurs during summer, with surface layer heat accumulation during the daytime and mixing caused by sea-breezes and convective mixing in the afternoon and at night. The study also observes strong vertical stratification and low oxygen conditions, with high air temperature, weak winds, and cold inflow from the north being the main causes.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Lionel Benoit, Lydie Sichoix, Alison D. Nugent, Matthew P. Lucas, Thomas W. Giambelluca
Summary: Stochastic rainfall generators are probabilistic models that simulate the space-time behavior of rainfall. They help identify and quantify the main modes of rainfall variability during parameterization and calibration. However, existing stochastic models face challenges in representing rainfall on tropical islands with high elevation topography due to localized orographic rain enhancement. To address this, a new stochastic daily multi-site rainfall generator specifically for areas with significant orographic effects is proposed. It classifies daily rain patterns into rain types based on rainfall space and intensity statistics and provides insights into rainfall variability at the island scale. The model combines non-parametric resampling and a parametric gamma transform function to simulate rainfall distribution and intensity. When applied to O'ahu (Hawai'i, United States of America) and Tahiti (French Polynesia), the model demonstrates good skills in simulating site-specific and island-scale rain statistics, making it a valuable tool for stochastic impact studies and water resource management in tropical islands.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Proceedings Paper
Engineering, Marine
Haibo Xu, Miguel Canals, Adail Rivera
Summary: The Finite Volume Community Ocean Model (FVCOM) has been implemented in Puerto Rico and the US Virgin Islands (PRVI) by incorporating operational data from the U.S. Naval Oceanographic Office (NAVOCEANO) and assimilating satellite products. The model shows clear improvements in ocean circulation and sea surface temperature modeling, particularly in representing higher frequency ocean currents dominated by tides.
Article
Engineering, Marine
Kerry Black, Derick Steinhobel
Summary: This study illustrates the coastal protection benefits of small artificial reefs on tropical islands. Utilizing a case study in a tropical lagoon in Mauritius, it was found that a simple and inexpensive artificial reef could widen beaches and stabilize shorelines, even during extreme weather events like cyclones. By rebalancing wave conditions using artificial reefs, erosion and flooding risks from rising sea levels could be mitigated effectively.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Review
Oceanography
R. Robertson, C. Zhao, W. Wang, Z. Xu, Z. Liu
Summary: Observational data from two areas near the Tiwi Islands and Coburg Peninsula in Australia show that tidal forces dominate the ocean dynamics in these regions. Factors such as solar radiation, convective cooling, wind mixing, and frictional mixing also contribute to the dynamics. However, the dynamics and environments differ between the east and west sides, with the east side being baroclinic and having internal tides, while the west side is barotropic and dominated by tidal advection. The variations in fluorescence and its temporal patterns have important implications for biological activity and primary productivity.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Meteorology & Atmospheric Sciences
Miraj B. Kayastha, Chenfu Huang, Jiali Wang, William J. Pringle, T. C. Chakraborty, Zhao Yang, Robert D. Hetland, Yun Qian, Pengfei Xue
Summary: This study develops a fully coupled modeling system to accurately simulate the thermal structure of the Great Lakes using the Weather Research and Forecasting model and a three-dimensional hydrodynamic model. The research finds that lake-atmosphere coupling has a significant impact on the summer lake surface temperature of Lake Superior, resulting in higher LST in June and July and lower LST in August and September. This research provides important insights into the behavior of the coupled modeling system and enhances our understanding of the Great Lakes climate system.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2023)
Article
Environmental Sciences
Runmei Ma, Jie Ban, Qing Wang, Yayi Zhang, Yang Yang, Mike Z. He, Shenshen Li, Wenjiao Shi, Tiantian Li
Summary: The study built high-performance random forest (RF) models to predict ozone concentrations in the Beijing-Tianjin-Hebei region in China from 2010 to 2017, showing an increasing trend, especially in more developed areas. Weather conditions played a significant role in the model, with high concentrations mainly distributed in regions with higher altitude.
ENVIRONMENTAL POLLUTION
(2021)
Article
Multidisciplinary Sciences
Jochem Marotzke
Summary: This article reviews the history of ideas that led to the establishment of the RAPID monitoring system for AMOC at 26.5 degrees N and highlights the author's personal career in the field. It also proposes two theoretical concepts for future research.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Ecology
Feng Luo, He Gou, Ruijie Li, Hua Wang, Zhipeng Chen, Weibo Lin, Keqiang Li
Summary: Under the impact of high-intensity human activities, the discharge of chemical pollutants in coastal waters continues to increase, leading to ecological problems such as eutrophication and heavy metal contamination. Studying the marine environmental capacity (MEC) is essential for controlling land-based pollutants and improving water quality. The research established a 3D water quality model and calculated the MEC of pollutants in main rivers entering the sea. The results show significant reduction rates for ammonia nitrogen and total nitrogen, while some rivers still have excess capacity.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)