Article
Meteorology & Atmospheric Sciences
Lihong Zhou, Zhenzhong Zeng, Cesar Azorin-Molina, Yi Liu, Jie Wu, Dashan Wang, Dan Li, Alan D. Ziegler, Li Dong
Summary: The study found that the seasonal wind speed range globally has declined by 10% since 1980, with significant decreases in Europe, South America, Australia, and Asia. However, North America saw an increase in the wind speed range. The findings are important for understanding the mechanisms behind wind speed variations and their implications for wind power generation.
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
Andrew L. Stewart, Xiaoyang Chi, Aviv Solodoch, Andrew McC Hogg
Summary: The transport of Antarctic Bottom Water is influenced by wind stress fluctuations, which drive fluctuations in transport on time scales shorter than 2 years, mainly due to differences in response time scales of topographic and interfacial form stresses to wind variability. This implies that the transport variability of Antarctic Bottom Water can largely be reconstructed from surface wind stress alone.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Limnology
Pierre Marrec, Heather McNair, Gayantonia Franze, Francoise Morison, Jacob P. Strock, Susanne Menden-Deuer
Summary: This study analyzed data from winter and summer cruises as part of the Northeast U.S. Shelf Long-Term Ecological Research program and found that coastal waters had higher phytoplankton biomass dominated by large cells in winter and small cells in summer. Phytoplankton growth rates were correlated with temperature, light availability, and community size-structure, while grazing rates were not correlated with total chlorophyll a, indicating other biological drivers at play in predator-prey interactions at the first trophic level.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Geography, Physical
Kazuya Kusahara, Daisuke Hirano, Masakazu Fujii, Alexander D. Fraser, Takeshi Tamura
Summary: This study investigates the basal melting of Antarctic ice shelves in different regions using simulation methods, revealing the mechanisms and seasonal variations of CDW intrusion in different regions of Antarctica, and discussing the impact of fast ice on the marine environment in the bay.
Article
Meteorology & Atmospheric Sciences
Paul B. Goddard, Clay R. Tabor, Tyler R. Jones
Summary: The study used the WAIS Divide ice core to construct a seasonal record of precipitation isotope values from 1980 to 2000, revealing that WAIS seasonal climate variability is driven by factors such as the position and strength of the Amundsen Sea low and the Pacific-South American patterns. The largest year-to-year seasonal anomalies in precipitation isotopes at the WAIS Divide location occur during austral winter due to eastward displacement of the Amundsen Sea low.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Peng Qi, Yun-xia Guo
Summary: This study investigates the seasonal to interannual variations of large-scale patterns in the southern East China Sea using reanalysis data. The results show significant interannual variability in the contradicted intrusions of shelf water and Kuroshio, which mainly occur during winter and early spring.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Oceanography
Steven J. Lentz
Summary: The characteristics and dynamics of depth-average along-shelf currents at monthly and longer time scales were studied using 17 years of observations from the Martha's Vineyard Coastal Observatory on the southern New England inner shelf. The results showed that the depth-averaged along-shelf current is almost always westward and stronger in summer than in winter. The annual cycle and variations around the annual cycle are primarily driven by the along-shelf wind stress. The wind stress is opposed by a pressure gradient that sets up along the southern New England shelf and a surface gravity wave-enhanced bottom stress.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Xianghui Guo, Zhentong Yao, Ying Gao, Yaohua Luo, Yi Xu, Weidong Zhai
Summary: This study investigates carbonate dynamics on the East China Sea (ECS) shelf off the Changjiang Estuary using field observations from 2015 to 2019. It found that the water characteristics varied in different seasons, with an increase in pH and aragonite saturation in surface water during highly productive warm seasons.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Yonghui Lei, Rui Li, Husi Letu, Jiancheng Shi
Summary: The Tibetan Plateau is an important and vulnerable water tower that supports livelihoods. By analyzing data, a comprehensive understanding of the annual cycle of recharge-storage-runoff is obtained, considering factors such as net water flux, water storage changes, runoff estimations, and river discharge measurements. Ratios of r1 and r2 reflect characteristics at the basin scale, such as buffer capacity. However, there is an imbalance between river discharge and runoff estimation in the Amu Darya basin.
JOURNAL OF HYDROMETEOROLOGY
(2023)
Article
Geography, Physical
Madison L. Ghiz, Ryan C. Scott, Andrew M. Vogelmann, Jan T. M. Lenaerts, Matthew Lazzara, Dan Lubin
Summary: This study utilizes reanalysis data and satellite remote sensing to investigate how meteorological conditions affect the surface energy balance in West Antarctica, leading to surface melt detected in satellite imagery. Different mechanisms for inducing surface melt were identified, with case studies providing insights into the specific conditions that cause melt events. Through further analysis and improvement, this research aims to quantify atmospheric stress on the vulnerable Antarctic ice shelves in a warming climate.
Article
Marine & Freshwater Biology
Mariano H. Tonini, Elbio D. Palma, Juan P. Pisoni
Summary: The coastal region surrounding the North Patagonian Gulfs is one of the most productive areas in the Patagonian Shelf ecosystem. This study provides a detailed analysis of the seasonal circulation patterns and fertilization processes in this region, which is of great significance for understanding its ecological and economic importance.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Engineering, Environmental
Mi-Sug Kim
Summary: This study developed a plastics fate model PsFM/FKM to investigate the vertical behaviors of micro/nano-plastics in freshwater. The model highlighted the importance of attachment efficiency in aggregation and confirmed that hetero-aggregates promoted the sedimentation process. Model validation was demonstrated through experiments and simulations, showing the model's accuracy and precision in estimating temporal changes in MP/NP concentrations.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geosciences, Multidisciplinary
Benjamin J. Wallis, Anna E. Hogg, J. Melchior van Wessem, Benjamin J. Davison, Michiel R. van den Broeke
Summary: An analysis of satellite observations from 2014 to 2021 reveals that glaciers on the west Antarctic Peninsula experienced an average summer speed-up of 12.4% and a maximum speed change of 22.3%. This indicates a strong sensitivity of these glaciers to seasonal variations in the ice-ocean-atmosphere system, emphasizing the importance of accounting for seasonal speed variations when assessing the mass balance and sea level contribution of the Antarctic Peninsula.
Article
Oceanography
Fei Tian, Robert S. Pickart, Peigen Lin, Astrid Pacini, G. W. K. Moore, Phyllis Stabeno, Thomas Weingartner, Motoyo Itoh, Takashi Kikuchi, Elizabeth Dobbins, Shaun Bell, Rebecca A. Woodgate, Seth L. Danielson, Zhaomin Wang
Summary: The study identifies multiple factors in shaping the seasonal cycle of hydrography and circulation on the Chukchi shelf, including coastal circulation, polynya/lead activity, wind mixing, and climate variations. Significant differences in water temperature and salinity between warm and cold seasons are observed, with wind impact playing a significant role in seasonal variations.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Multidisciplinary Sciences
Chuyi Cui, Ashwini Kulkarni, Shirley Rietdyk, Satyajit Ambike
Summary: During community ambulation, anticipatory adaptations in gait are important for navigating different environments. This study focuses on the role of the double support phase in preparing for challenging maneuvers. The results show that the adjustments made during this phase are minimally influenced by subsequent foot targeting tasks, and the main function is to maintain stability of body rotations.
Article
Transportation
Dong Huang, Manel Grifoll, Hongxiang Feng, Maria Isabel Ortego, Pengjun Zheng
Summary: The study uses compositional data exploration tools to investigate the development pattern of the Yangtze River Delta multi-port system, revealing that it has gone through four stages and shows a tendency towards 'multi-core development' and faces challenges from peripheral ports.
MARITIME POLICY & MANAGEMENT
(2022)
Article
Oceanography
Yu Fu, Qin Lin, Manel Grifoll, Jasmine Siu Lee Lam, Hongxiang Feng
Summary: This paper explores the concentration, inequality, and competition of the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) multi-port system. It finds that the Hong Kong Port has experienced a continuous decline and has been overtaken by Shenzhen and Guangzhou ports. The evolution of the GBA multi-port system is influenced by factors such as capital transfer and China's opening up policy. The prospect of the Hong Kong Port is not optimistic, and negative impact from Guangzhou can be expected. It recommends Hong Kong to differentiate its development with Shenzhen and Guangzhou ports and focus on international transhipment.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Physics, Multidisciplinary
Chuchu Li, Qin Lin, Dong Huang, Manel Grifoll, Dong Yang, Hongxiang Feng
Summary: Historical time-series data of container traffic in ports are characterized by strong randomness that causes the time-series prediction performance to vary significantly. Thus, the measuring problem of a priori container traffic predictability arises. Academia suggests that this predictability may be related to entropy as a measure of the information provided.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Review
Oceanography
Elena Roget, Josep L. Pelegri, Jesus Planella-Morato, Joan Puigdefabregas, Mikhail Emelianov, Ignasi Valles-Casanova, Dorleta Orue-Echevarria
Summary: Diapycnal mixing in the Brazil-Malvinas Confluence Zone (BMC) was assessed based on microstructure measurements during an April 2017 cruise. Active turbulence was observed at all depths and stations, with high-dissipation patches ranging from several metres to a few tens of metres. The frontal zone showed high energy dissipation and eddy diffusivity, with higher values in the south compared to the north of the BMC.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Chemistry, Multidisciplinary
Mariano Morell, Pedro Portau, Antoni Perello, Manuel Espino, Manel Grifoll, Carlos Garau
Summary: An investigation was conducted at the Port of Palma de Mallorca to evaluate the feasibility of water pollution monitoring based on computer vision. The study found that Image Classification, using convolutional neural networks, is the most suitable method for marine pollution monitoring due to its high accuracy rates and low training requirements. The research also suggested that progressive implementation can reduce the development cost while providing functional monitoring systems.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Studies
Gala Moreno, Joaquin Salvador, Iker Zudaire, Jefferson Murua, Josep Lluis Pelegri, Jon Uranga, Hilario Murua, Maitane Grande, Josu Santiago, Victor Restrepo
Summary: Fishers and scientists are collaborating to design biodegradable fish aggregating devices (bio-FADs) for efficient fishing in the tropical Pacific, Atlantic, and Indian Oceans. The conventional drifting FAD (dFAD) design, using organic ropes and canvases instead of plastic, has a shorter lifespan due to structural stress. To overcome this, a paradigm shift is proposed to minimize stress by redesigning bio-FAD structures, such as the jelly-FAD, which mimics the buoyancy of jellyfish. Preliminary results show that the jelly-FAD aggregates tuna and has a lifespan of over 6 months at sea, with similar drifting speeds to conventional dFADs.
Article
Engineering, Ocean
Anna Olive Abello, Josep L. Pelegri, Francisco Machin
Summary: A simple model-dependent approach called the radial offset by diffusion (ROD) method is proposed for estimating horizontal diffusivity in the southwestern South Atlantic. The method compares actual displacements of field drifters with numerical trajectory predictions to determine the diffusive motions not captured by the numerical model. The ROD method is validated for both numerical and field applications.
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Marta Martin-Rey, Ignasi Valles-Casanova, Josep L. Pelegria
Summary: The study investigates the impact of tropical Atlantic Ocean variability modes on the variability of the upper-ocean circulation. Multiple datasets including oceanic reanalyses, simulations, and satellite data were utilized for the period 1982-2018. The results reveal significant changes in the surface and subsurface ocean currents during the emergence of Atlantic meridional mode (AMM), Atlantic zonal mode (AZM), and the connection between AMM and AZM. Ocean waves play a crucial role in connecting tropical and equatorial ocean transport.
JOURNAL OF CLIMATE
(2023)
Article
Geosciences, Multidisciplinary
Ludmila Caetano, Carles Guallar, Jacobo Martin, Montserrat Vidal, Leticia Cotrim da Cunha, Rosemary Vieira, Leonardo Amora-Nogueira, Josep L. Pelegri, Humberto Marotta
Summary: This study investigates the small-scale distribution of pCO2 in the subantarctic Atlantic Patagonian waters, specifically in the Argentinian Beagle Channel. The findings suggest the persistence of pCO2 below atmospheric equilibrium in this area and reveal the influences of physical and biological factors, such as temperature, salinity, and chlorophyll-a fluorescence, on the variability of pCO2. The study also highlights the importance of metabolic and physical controls on the sequestration of atmospheric carbon in subpolar coastal waters.
JOURNAL OF MARINE SYSTEMS
(2023)
Article
Green & Sustainable Science & Technology
Liangxia Zhong, Jiaxin Wu, Yiqing Wen, Bingjie Yang, Manel Grifoll, Yunping Hu, Pengjun Zheng
Summary: Ship-related marine oil spills can have a significant negative impact on the environment, but effective clean-up efforts can help minimize the damage. The success of these clean-up efforts is influenced by various accident-related and emergency response-related factors. This study used a data-driven Bayesian network analysis approach to identify the key accident-related factors that impact oil spill clean-up performance and found that the amount of discharge, severity, and location of the accident are the most critical factors. These findings are important for improving emergency management and planning oil spill clean-up efforts.
Article
Oceanography
Dorleta Orue-Echevarria, Kurt L. Polzin, Alberto Naveira C. Garabato, Alexander Forryan, Josep L. Pelegri
Summary: This study evaluates the rates of isopycnal stirring, water mass transport, and diapycnal mixing across the Brazil-Malvinas Confluence (BMC) using microstructure and hydrographic measurements. The results show widespread isopycnal stirring and weak diapycnal mixing in the BMC, with isopycnal stirring prevailing in deeper layers. Eddies are found to have an important cross-BMC transport, suggesting that eddy-induced flows significantly contribute to the transfer of waters in the region.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Oceanography
Cristina Arumi-Planas, Maria Dolores Perez-Hernandez, Josep L. Pelegri, Pedro Velez-Belchi, Mikhail Emelianov, Veronica Cainzos, Luis Cana, Yvonne L. Firing, Luis Garcia-Weil, Daniel Santana-Toscano, Alonso Hernandez-Guerra
Summary: The South Atlantic Ocean plays a crucial role in the heat exchange of the climate system by hosting the returning flow of the Atlantic Meridional Overturning Circulation (AMOC). Through data analysis from hydrographic cruises, we have identified different water masses and calculated their circulation patterns in the South Atlantic Subtropical gyre. We have also assessed the strength of the AMOC, heat transport, and freshwater flux in this region.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Engineering, Marine
Clara Boren, Manel Grifoll, Marcella Castells-Sanabra
Summary: Maritime transportation is the main mode of overseas freight transport, but it still contributes significantly to greenhouse gas emissions. This study investigates the impact of slow steaming on fuel consumption and emissions in container ships, and finds that the cubic speed-power relation may overestimate the reduction in fuel consumption and emissions. The results suggest the need for accurate assessment methods when evaluating the effectiveness of slow steaming as a strategy to reduce fuel consumption and costs.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Meteorology & Atmospheric Sciences
Manel Grifoll, Jarle Berntsen, Alan Cuthbertson
Summary: This study presents new laboratory-scale numerical simulations of bi-directional stratified flows and verifies the results by large-scale experimental data. The simulations reveal the main flow patterns of the exchange flows, and demonstrate the significant effects of rotational frames on the secondary flow structure.
Article
Engineering, Chemical
Tianshou Liu, Chaojun Ding, Hongxiang Feng, Manel Grifoll, Qin Lin
Summary: This study identifies the risk factors of oil tanker berthing and handling operations through multiple methods, and reduces the impact of subjective weighting using machine learning algorithms and reliability analysis. The hierarchical relationship among factors is analyzed through the construction of an Interpretive Structural Model, and strategies to improve the safety management level are proposed.
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2023)