Article
Multidisciplinary Sciences
Hidetaka Kobayashi, Akira Oka, Akitomo Yamamoto, Ayako Abe-Ouchi
Summary: Recent paleo reconstructions suggest that increased carbon storage in the Southern Ocean during glacial periods contributed to low glacial atmospheric carbon dioxide concentration. The study shows that Southern Ocean salinity stratification and iron fertilization from glaciogenic dust during glacial periods amplified the carbonate sedimentary feedback, leading to increased carbon storage in the deep ocean and a 77-ppm reduction of atmospheric pCO(2). Model-data agreement of Southern Ocean properties is crucial for simulating glacial changes in the ocean carbon cycle.
Article
Limnology
Camille M. Grimaldi, Ryan J. Lowe, Jessica A. Benthuysen, Michael V. W. Cuttler, Rebecca H. Green, Ben Radford, Nicole Ryan, James Gilmour
Summary: Accurate representation of physical and biological processes is crucial for understanding larval dispersal pathways and connectivity in coral reefs. A study in Mermaid Reef, Australia, reveals that hydrodynamic forcings greatly affect larval retention rates. Wave and tidal currents play a significant role in larval transport within the reef, while extreme hydrodynamic conditions caused by tropical cyclones can generate different connectivity pathways.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Engineering, Marine
Bo Hong, Hanlu Xue, Liangsheng Zhu, Hongzhou Xu
Summary: Assessing the trend of sea surface wind is crucial for understanding the response of the marine environment to climate change. The study reveals a counterclockwise shift in summer wind direction in the Pearl River Estuary over the past 42 years. Using a high-resolution hydrodynamic model, it is found that this wind direction shift weakens both cross-channel wind-driven transport and along-channel seaward flow, leading to significant changes in circulation patterns and an increase in stratification.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Christian Ferrarin, Marco Bajo, Georg Umgiesser
Summary: Monitoring networks are aimed at capturing the spatial and temporal variability of environmental variables in a specific environment. This study utilized data assimilation techniques to optimize ocean monitoring networks, with successful testing in the Lagoon of Venice. The advanced ensemble square root filter showed advantages in maintaining a physically and mass-conservative solution, leading to a better reproduction of the hydrodynamics in the system.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
Article
Environmental Sciences
Beatriz Biguino, Fatima Sousa, Ana C. Brito
Summary: Estuarine circulation plays a crucial role in transporting organisms and nutrients, and understanding the hydrodynamic patterns is essential for preserving these ecologically important regions. Data from sampling in the Sado estuary indicated that water circulation occurs through two main navigation channels, with little stratification of temperature and salinity along the water column. Analyzing the data suggests possible hydrodynamic changes in the estuary in recent years.
Article
Oceanography
Marlen Kolbe, Fabien Roquet, Etienne Pauthenet, David Nerini
Summary: The Southern Ocean plays a key role in global oceanic heat uptake and sea level rise, with significant interregional differences in steric height trends. Changes in thermohaline stratification have been observed over the past decade, with Antarctic waters experiencing a drop in steric height while subtropical waters have risen.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Geosciences, Multidisciplinary
Alec Torres-Freyermuth, Gabriela Medellin, Jorge A. Kurczyn, Roger Pacheco-Castro, Jaime Arriaga, Christian M. Appendini, Maria Eugenia Allende-Arandia, Juan A. Gomez, Gemma L. Franklin, Jorge Zavala-Hidalgo
Summary: Barrier islands in tropical regions are vulnerable to coastal flooding and erosion during hurricane events. A study on the Yucatan coast affected by Hurricane Gamma and Hurricane Delta in October 2020 found that these hurricanes caused heavy rain, strong winds, and high storm surges, leading to changes in beach morphology and urban flooding. Existing modeling systems faced difficulties in accurately predicting coastal hydrodynamic response, indicating the need for further research and consideration of compound flooding factors.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
A. K. DuVivier, M. M. Holland, L. Landrum, H. A. Singh, D. A. Bailey, E. A. Maroon
Summary: The study found that using a sea ice model that is more realistic can lead to changes in sea ice production along coasts and have impacts on the ocean and atmosphere. The experiment with mushy ice physics showed increased production of sea ice, leading to denser and saltier subsurface ocean, increased Antarctic Bottom Water formation, and decreased turbulent heat flux and low-level cloud cover near the Antarctic coast.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Patricia P. B. Eichler, Christofer Paul Barker, Luiz Bruner de Miranda
Summary: This study characterized the estuarine channel of Bertioga in Brazil using benthic foraminifera and hydrography as environmental indicators. The salinity and temperature measured at different fixed stations influenced species habitat, fluvial discharge, and environmental quality. Tidal oscillation during neap and spring tides changed the stratification-circulation classification, indicating different environmental conditions in different seasons and locations.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Tillys Petit, M. Susan Lozier, Simon A. Josey, Stuart A. Cunningham
Summary: Winter convection in the North Atlantic Ocean plays a key role in the global climate by producing dense waters that contribute to the Atlantic Meridional Overturning Circulation (AMOC). Recent studies emphasize the significance of the Irminger and Iceland basins in the production of North Atlantic Deep Water, with buoyancy forcing transforming surface waters into deep waters. The research shows that air-sea fluxes and ocean surface density are crucial factors influencing the densification of surface water and the transformation of subpolar mode water in the Iceland Basin.
Article
Meteorology & Atmospheric Sciences
Philippe Naveau, Soulivanh Thao
Summary: This paper proposes a simple statistical framework to improve signal detection in climate attribution studies. By choosing the appropriate metric, the bias in multimodel global climate simulations can be efficiently handled. The method is applied to data analysis of yearly maximum precipitation from CMIP5 and CMIP6 databases, showing the emergence of anthropogenic forcing in extreme precipitation at the beginning of the twenty-first century.
JOURNAL OF CLIMATE
(2022)
Article
Environmental Sciences
Mingshun Jiang
Summary: Severe water quality degradation and phytoplankton blooms have been observed in the northern Indian River Lagoon (IRL) in recent years. The water residence time and connectivity are found to be two important factors affecting the water quality in this area. This study used a high-resolution hydrodynamic model to investigate these factors and found that surface winds drive complex yet coherent residual circulation within each sub-basin, affecting the water properties and phytoplankton blooms in the region.
ESTUARIES AND COASTS
(2023)
Article
Geosciences, Multidisciplinary
Shun Ohishi, Takemasa Miyoshi, Misako Kachi
Summary: An adaptive observation error inflation method is proposed for atmospheric and oceanic data assimilation systems to improve the accuracy and geostrophic balance of assimilated results by reducing observation errors.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Multidisciplinary Sciences
Jiechun Deng, Aiguo Dai
Summary: The study shows that sea ice-air interactions are crucial for multidecadal climate variability in both the Arctic and North Atlantic. By amplifying multidecadal variations in sea-ice cover, sea surface temperatures, and surface air temperature, sea ice-air interactions mainly affect the Atlantic Meridional Overturning Circulation through changes in surface fluxes.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
Michele Mossa, Elvira Armenio, Mouldi Ben Meftah, Maria Francesca Bruno, Diana De Padova, Francesca De Serio
Summary: The Coastal Engineering Laboratory of DICATECh at the Polytechnic University of Bari in Italy conducts place-based research in the Mar Grande and Mar Piccolo of Taranto, providing data on hydrodynamics and water quality measurements in a complex marine ecosystem. The presence of a naval base, the largest steel mill in Europe, and an oil refinery makes this coastal system highly vulnerable. Two fixed stations have been installed to collect data on various parameters such as wind speed, temperature, salinity, currents, and waves, which are used to deepen understanding of the basin's hydrodynamic structures and characteristics.
EARTH SYSTEM SCIENCE DATA
(2021)
Editorial Material
Geosciences, Multidisciplinary
Katrin Huhn, Karin R. Bryan
GEO-MARINE LETTERS
(2020)
Article
Ecology
Stephanie Mangan, Karin R. Bryan, Simon F. Thrush, Rebecca Gladstone-Gallagher, Andrew M. Lohrer, Conrad A. Pilditch
MARINE ECOLOGY PROGRESS SERIES
(2020)
Article
Geosciences, Multidisciplinary
Justin H. Walker, Karin R. Bryan, Arthur C. Trembanis
Article
Geography, Physical
Benjamin K. Norris, Julia C. Mullarney, Karin R. Bryan, Stephen M. Henderson
Summary: The spatial variability in vegetation density controls sediment transport at sub-meter scales within a wave-exposed mangrove forest. Infragravity waves are likely drivers of sediment transport within the mangrove forest. Near-bed turbulent kinetic energy is correlated with bed level changes in both the mangrove forest and the unvegetated mudflat.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Geosciences, Multidisciplinary
Jennifer Montano, Giovanni Coco, Laura Cagigal, Fernando Mendez, Ana Rueda, Karin R. Bryan, Mitchell D. Harley
Summary: Shorelines respond to various drivers on different time-scales, with changes at longer time-scales often superimposed on shorter ones. A new approach using Complete Ensemble Empirical Mode Decomposition successfully predicted shoreline evolution from storm events to decadal timescales. By linking model drivers with shoreline position on multiple time-scales, the approach outperformed common shoreline models when using SLP and wave information. Prediction of shoreline changes over months, years, or decades remains a challenging task due to the complex interplay of different factors influencing beach dynamics.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Erik M. Horstman, Karin R. Bryan, Julia C. Mullarney
Summary: The interaction between creek flow and sheet flow in a mangrove creek system plays a crucial role in driving tidal asymmetries and reducing high-water conditions.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Oceanography
Hemanth Vundavilli, Julia C. Mullarney, Iain T. MacDonald, Karin R. Bryan
Summary: A three-dimensional numerical model was developed to investigate drivers of sediment deposition in a mangrove-lined river delta. Based on an idealized domain representing the Firth of Thames in New Zealand, the study revealed that sediment deposition patterns are influenced by the presence of vegetation such as mangroves.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Geography, Physical
Peter J. de Ruiter, Julia C. Mullarney, Karin R. Bryan
Summary: The study reveals that wind plays a significant role in influencing velocity asymmetry in shallow tidal basins, with higher wind speeds leading to more extreme asymmetry patterns. Wind primarily affects mean and peak flow velocities in the basins, with limited impact on tidal harmonics. The depth-dependent velocity asymmetry patterns are most pronounced for wind speeds of 6 m/s and greater, and for wind directions parallel to the main axes of the basins' tidal channels.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geography, Physical
Hannah E. Glover, Debra J. Stokes, Andrea S. Ogston, Karin R. Bryan, Conrad A. Pilditch
Summary: This study investigates the impact of mangrove extent on the Waikaraka Estuary in Tauranga Harbor, New Zealand, using in-situ observations and numerical modeling. The results show that fine sediment is unlikely to be flushed out of the estuary after mangrove removal and the hydrodynamics are mainly controlled by tidal interactions with bathymetry rather than the presence of mangrove vegetation.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Soil Science
A. G. Carshalton, M. R. Balks, T. A. O'Neill, K. R. Bryan, C. A. Seybold
Summary: The maximum seasonal depth of thaw in permafrost soils, known as the active layer depth, is influenced by various soil and atmospheric variables. Monitoring data from soil climate stations in the McMurdo Dry Valleys between 1999 and 2012 revealed significant variations in active layer depth and temperature at the top of the permafrost. However, there were no clear trends of increase or decrease during the period from 2000 to 2018. Wavelet analysis showed correlations between global and regional climate systems and de-seasonalized permafrost temperatures. Although the dataset is currently too short to draw conclusions about long-term changes, it serves as a valuable baseline for future assessments.
Article
Oceanography
Hieu M. Nguyen, Karin R. Bryan, Zeng Zhou, Conrad A. Pilditch
Summary: This research demonstrates how the effect of exposure to air on intertidal flat profile development in cohesive coastal environments can be incorporated into applied numerical modelling. The findings show that the stabilizing effect of exposure leads to a more flat-topped shape of intertidal mudflats, and higher air temperatures have a greater impact on bed level change.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Oceanography
J. M. Montgomery, K. R. Bryan
Summary: The extent of flood protection provided by mangrove forests varies due to differences in tree growth characteristics and local geomorphology. A model experiment in Tauranga, New Zealand, showed that the distribution and channelization of vegetation have a greater impact on flood attenuation than vegetation density. Additionally, a forest with sloping topography reduces the rate at which long wave attenuation occurs.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Fisheries
Karin R. Bryan, Benjamin T. Stewart, Alex M. Port, Hannah F. E. Jones, Conrad A. Pilditch
Summary: Estuaries are complex environments where catchment-derived contaminants interact with estuarine geomorphology and hydrodynamics. Biophysical modelling can help understand spatial variations in water quality, but decision-making based on specific details may be limited by nonlinear interactions and inherent constraints.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Amin Rahdarian, Karin R. Bryan, Mick Van der Wegen
Summary: This study examines the impact of initial bathymetry on the establishment of estuarine equilibrium and the response to sea-level rise. The findings highlight the importance of initial bathymetric conditions in predicting coastal response to changes such as sea-level rise.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geosciences, Multidisciplinary
Christo Rautenbach, Julia C. Mullarney, Karin R. Bryan
Summary: Effective and accurate ocean and coastal wave predictions are crucial for engineering, safety, and recreational purposes. The study found that a computational node configuration of six threads/cores produced the most effective computational set-up for 1-week wave hindcasts. Further research is needed to understand the relationship between computational domain size and optimal parallel computational threads/cores for efficient simulations.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
