Article
Oceanography
Yana Bebieva, M. Susan Lozier
Summary: The density-compensated overturning in the Labrador Sea boundary current is largely attributed to the combined effect of direct atmospheric cooling, freshening due to mixing with meltwater and Arctic Ocean inflow, and the excess of precipitation over evaporation in the basin. The sensitivity analysis reveals that the location of freshwater entry plays a role in the density compensation, with greater impact when the freshwater enters on the Greenland side.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2023)
Article
Oceanography
Rishav Goyal, Matthew H. England, Martin Jucker, Alex Sen Gupta
Summary: This study highlights the significant impact of zonally asymmetric atmospheric changes on future ocean warming and circulation changes in subtropical western boundary current regions, explaining a substantial portion of sea surface temperature warming in the Tasman Sea, southern Australia, and the Agulhas Current region. The warming trends in the Indian and Pacific basins are primarily driven by the advection of warm tropical water towards the mid-latitudes due to changes in large-scale subtropical ocean gyres, influenced by changes in mid-latitude surface wind stress patterns.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Meteorology & Atmospheric Sciences
Rui Zhang, Bo Hong, Lei Zhu, Wenping Gong, Heng Zhang
Summary: This study examined the morphological evolution and hydrodynamic responses of the Huangmaohai estuary in southern China. The results showed that human activities have significantly changed the estuary's topography and modified its circulation patterns.
Article
Computer Science, Interdisciplinary Applications
Anabela Oliveira, Andre B. Fortunato, Marta Rodrigues, Alberto Azevedo, Joao Rogeiro, Samuel Bernardo, Laura Lavaud, Xavier Bertin, Alphonse Nahon, Goncalo de Jesus, Miguel Rocha, Pedro Lopes
Summary: The passage introduces OPENCoastS, a free WebGIS platform for developing hydrodynamic forecast systems with 2D tidal, wave, and current interactions, as well as 3D baroclinic flows. It showcases various applications, including typhoon prediction, the impact of waves on extreme water levels, and bathymetry on wave and current circulation.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Meteorology & Atmospheric Sciences
Celine Heuze, Hannah Zanowski, Salar Karam, Morven Muilwijk
Summary: Arctic sea ice loss is a symbol of climate change, but current climate models cannot accurately reproduce or predict it. This is due to the role of the ocean, especially the Atlantic layer, in sea ice processes. Biases in the Atlantic layer and deeper layers of the Arctic Ocean were identified in 14 climate models, including cold and deep core temperatures, excessive thickness, and warm deep and bottom waters. These biases are attributed to inaccurate representation of shelf processes and volume fluxes through Fram Strait. The findings highlight the need for overall improvements in the different model components and their coupling.
JOURNAL OF CLIMATE
(2023)
Article
Engineering, Marine
Jie Xu, Sheng Yan, Zhili Zou, Chengshu Chang, Kezhao Fang, Yan Wang
Summary: This study investigates the rip current system produced by wave reflection on a finite-length shore-normal structure. The experiment and numerical model consider the incident wave condition of obliquely propagating surface gravity waves on planar and barred beaches without or with a rip channel. The resulting rip current system consists of node rips and deflection rips formed by the presence of longshore standing waves and the interaction between the incoming longshore current and reflection wave field.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Oceanography
Xiaoting Yang, Eli Tziperman, Kevin Speer
Summary: This study investigates the local dynamics of deep eastern boundary currents using idealized GCM simulations and a conceptual vorticity model. The vorticity balance over most of the zonal width of the DEBCs is between meridional advection of planetary vorticity and vortex stretching, while near the eastern boundary, a balance between vorticity tendencies due to friction and stretching is found.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Shizhu Wang, Qiang Wang, Muyin Wang, Gerrit Lohmann, Fangli Qiao
Summary: This study compares the representation of sea surface salinity and liquid freshwater content in Arctic Ocean simulations from CMIP5 and CMIP6 models. The results show no significant improvement in CMIP6 compared to CMIP5, with overestimation of liquid freshwater content being a common bias in CMIP6. The study also investigates projected changes in freshwater content and budget under different socioeconomic scenarios, showing a trend of increased freshwater sources and a shift from a freshwater sink to a source. The findings highlight the ongoing freshening trend in the Arctic Ocean with implications on its physical and biogeochemical environment.
Article
Meteorology & Atmospheric Sciences
David B. Bonan, Andrew F. Thompson, Emily R. Newsom, Shantong Sun, Maria Rugenstein
Summary: This study examines the response of the Atlantic meridional overturning circulation (AMOC) to an abrupt quadrupling of atmospheric carbon dioxide using a collection of GCM simulations. The simulations show consistent weakening of the AMOC during the first century, but diverse behaviors over longer time scales. The study attributes the AMOC behavior to changes in temperature and salinity in different regions, highlighting the importance of considering high-latitude freshwater changes and salinity anomalies for understanding the long-term evolution of the AMOC.
JOURNAL OF CLIMATE
(2022)
Article
Geosciences, Multidisciplinary
Chia-Wei Hsu, Jianjun Yin, Stephen M. Griffies, Raphael Dussin
Summary: The study used a global ocean-sea ice model and different datasets to drive ocean-sea ice models, finding biases in dynamic sea level and persistent bias at 9 degrees North. This bias is related to wind stress forcing and geostrophic currents in the 4 to 9 degrees North latitudinal band. The simulation forced by JRA55-do significantly reduces the bias in dynamic sea level trend over the northern tropical Pacific compared to CORE.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
Article
Oceanography
Uri Schattner
Summary: While the role of shore-parallel transport is often overshadowed by tectonic variations, sediment influx, and sea-level change, this study emphasizes the central role of shore-parallel currents in regulating the sedimentary budget. It provides a reference case for continental margins where the shore-parallel role is obscured by more dominant tectonic-eustatic-sedimentation factors.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Oceanography
Annika O'Dea, Nirnimesh Kumar, Merrick C. Haller
Summary: The study investigates the impact of alongshore-varying bathymetry on surf zone vorticity and velocity fields, finding that the variable bathymetry significantly affects kinetic energy but has minor impact on transient components. It shows that wave directional spreading plays a crucial role in enstrophy and vorticity forcing, with alongshore-varying bathymetry impacting total exchange velocity slightly.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Yunhe Wang, Xiaojun Yuan, Mark A. Cane
Summary: This study examines the coupled relationships among clouds, atmospheric circulation, and sea ice in Antarctic winter, finding that the wave-3 pattern dominates the leading covariability mode among them. The radiative effect of the clouds related to the wave-3 pattern can generate sea ice anomalies up to 12 cm thick in one month, providing physical evidence for climate model validations.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Oceanography
Gwendal Marechal, Fabrice Ardhuin
Summary: Advances in understanding surface currents have shown the importance of internal waves, mesoscale, and submesoscale features on wind waves, but the quantitative impact of currents on waves remains unclear. Comparing satellite altimetry data and numerical wave models, it is found that high-resolution current fields (around 30 km or less) and directional resolution of 7.5 degrees can accurately represent significant wave height gradients in the Agulhas current.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Engineering, Marine
Timma Flanagan, Meagan Wengrove, Bryson Robertson
Summary: This study develops a novel coupled WEC-Wave numerical method to quantify the influence of future nearshore wave energy converter arrays on the local wave climate. The research finds that the number and spacing of WEC arrays can magnify the impact on the nearshore wave climate.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Meteorology & Atmospheric Sciences
Wei Zhang, Yu Sun, Yapeng Wu, Junyu Dong, Xiaojiang Song, Zhiyi Gao, Renbo Pang, Boyu Guoan
Summary: This study employed a spatiotemporal deep-learning method to correct biases in numerical ocean wave forecasts. By using a correction model driven by both wave and wind fields and a novel pixel-switch loss function, the corrected results performed well in different seasons and improved the accuracy of the original forecasts.