Presentation by Emil Stanev (HZG Institute of Coastal Research, Germany), at the DANUBIUS Modelling Workshop, during Delft Software Days - Edition 2019. Friday, 8 November 2019, Delft.
DSD-INT 2017 A stroll through the European marine data landscape the role of ...Deltares
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Wave-Induced Reef Barrier Currents, XBeach Simulation vs Field M...Deltares
Presentation by Damien Sous (Université De Toulon) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Thursday, 2 November 2017, Delft.
DSD-INT 2017 Morphodynamic analysis of intervention scenarios at the Belgian ...Deltares
Presentation by Gerasimos Kolokythas (Flanders Hydraulics) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2017 Tracking of red tide movement in Hong Kong waters - WongDeltares
Presentation by Ken T. M. Wong, University of Hong Kong (HKU), Hong Kong, at the Delft3D - User Days (Day 3: Water quality and ecology), during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
C5.04: GO-SHIP: A component of the sustained ocean observing system - Bernade...Blue Planet Symposium
The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) brings together scientists with interests in physical oceanography, the carbon cycle, marine biogeochemistry and ecosystems, and other users and collectors of ocean interior data, and coordinates a network of globally sustained hydrographic sections as part of the global ocean/climate observing system including physical oceanography, the carbon cycle, marine biogeochemistry and ecosystems.
GO-SHIP provides approximately decadal resolution of the changes in inventories of heat, freshwater, carbon, oxygen, nutrients and transient tracers, covering the ocean basins from coast to coast and full depth (top to bottom), with global measurements of the highest required accuracy to detect these changes. The GO-SHIP principal scientific objectives are: (1) understanding and documenting the large-scale ocean water property distributions, their changes, and drivers of those changes, and (2) addressing questions of how a future ocean that will increase in dissolved inorganic carbon, become more acidic and more stratified, and experience changes in circulation and ventilation processes due to global warming and altered water cycle.
DSD-INT 2017 A stroll through the European marine data landscape the role of ...Deltares
Presentation by Belén Martín Míguez (EMODnet) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Wave-Induced Reef Barrier Currents, XBeach Simulation vs Field M...Deltares
Presentation by Damien Sous (Université De Toulon) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Thursday, 2 November 2017, Delft.
DSD-INT 2017 Morphodynamic analysis of intervention scenarios at the Belgian ...Deltares
Presentation by Gerasimos Kolokythas (Flanders Hydraulics) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2017 Tracking of red tide movement in Hong Kong waters - WongDeltares
Presentation by Ken T. M. Wong, University of Hong Kong (HKU), Hong Kong, at the Delft3D - User Days (Day 3: Water quality and ecology), during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
C5.04: GO-SHIP: A component of the sustained ocean observing system - Bernade...Blue Planet Symposium
The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) brings together scientists with interests in physical oceanography, the carbon cycle, marine biogeochemistry and ecosystems, and other users and collectors of ocean interior data, and coordinates a network of globally sustained hydrographic sections as part of the global ocean/climate observing system including physical oceanography, the carbon cycle, marine biogeochemistry and ecosystems.
GO-SHIP provides approximately decadal resolution of the changes in inventories of heat, freshwater, carbon, oxygen, nutrients and transient tracers, covering the ocean basins from coast to coast and full depth (top to bottom), with global measurements of the highest required accuracy to detect these changes. The GO-SHIP principal scientific objectives are: (1) understanding and documenting the large-scale ocean water property distributions, their changes, and drivers of those changes, and (2) addressing questions of how a future ocean that will increase in dissolved inorganic carbon, become more acidic and more stratified, and experience changes in circulation and ventilation processes due to global warming and altered water cycle.
DSD-INT 2017 Infragravity Period Oscillations In A Channel Harbor Near A Rive...Deltares
Presentation by Florian Bellafont (Université Pau & Pays de l’Adour) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Rising seas, intensifying weather extremes and increasing impact...Deltares
Presentation by Michalis Vousdoukas, European Joint Research Centre, Italy, at the Symposium Knowledge and Innovation for Decision Making, during Delft Software Days - Edition 2017. Friday, 27 October 2017, Delft.
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - CanestrelliDeltares
Presentation by Alberto Canestrelli, University of Florida, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2018 Tidal propagation and salt intrusion in the multi-channel estuar...Deltares
Presentation by Sepehr Eslami Arab, University of Utrecht, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
Presentation given by Anna Rymszewicz, John O'Sullivan, Michael Bruen, Jonathan Turner, Elisabeth Conroy, Mary Kelly-Quinn & Damien Lawler at the SILTFLUX workshop, UCD, Dublin, February 2016
DSD-INT 2017 Groundwater system analysis using isotope measurement data, San ...Deltares
Presentation by Cinthya Gómez Castro (Costa Rica) at the iMOD International User Day, during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2017 Energy transfers and reflection of infragravity waves at a dissi...Deltares
Presentation by Anouk de Bakker (CNRS-Université de La Rochelle) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2017 Use of RIBASIM in Lesotho - PasschierDeltares
Presentation by Ron Passchier (Deltares) at the River Basin Planning and Modelling symposium, during Delft Software Days - Edition 2017. Wednesday, 25 October 2017, Delft.
Nepal does not have own climate projection model. Therefore, climate change studies in Nepal completely depend on the results of available model throughout the world. Many field based studies have proven that Nepal is the most vulnerable country in the context of climate change due to limited capacity to adapt to it. On the other hand, it is a big challenge to natural scientists to demonstrate climate change physically because of limited resources. Due to the complex geography of Nepal, most of the global climate projections are not able to capture the temporal and spatial climatic variability. In consideration to this problem, the Department of Hydrology and Meteorology (DHM) of Nepal has initiated a project to downscale climatic parameters regionally with technical support from the Asian Disaster Preparedness Centre (ADPC) under the financial support of Asian Development Bank (ADB). They used three different Regional Climate Models (RCM); PRECIS, RegCM4, and WRF under AR4 scenarios. However, there is still a lot of discrepancy among these projections which have created confusion among the stakeholders. Therefore, the objective of my presentation will be to focus on the discussion over these issues among the climate experts at UNBC.
Composite sea level prediction in the Mediterranean
Sea - comparisons with observations
By Florent Lyard and Laurent Roblou
Abstract
In this presentation, we focus on the sea level recorded and modelled in the Mediterranean Sea during the year
2002. Two dynamical models are made available to us, the first one designed to solve the ocean circulation
(Mercator Psy2-v1 (Newsletter Mercator N°8)) and the second one to solve the tide and storm surge processes
(Mog2D). We challenge the assumption that a combined use of those two models (i.e. through a full or partial
summation) should provide an optimal sea level predicting tool. By comparing with tide gauge measurements, the
predicting skills of models, alone and/or combined together, are estimated for different frequency ranges. The
two major conclusions that can be drawn from this study is that first a combination of low-pass filtered Mercator
plus Mog2D closely fits the recorded data, and second the Mog2D low frequency sea level signal is surprisingly
needed in this combination to obtain the best prediction (instead of the low-pass filtered Inverted Barometer
(IB)). Further investigations will be necessary to understand precisely the reasons of the latter finding.
Impacts of climate change on the water availability, seasonality and extremes...asimjk
Projecting future hydrology for the mountainous, highly glaciated upper Indus basin (UIB) is a challenging task, because of uncertainties in the future climate projections and issues with the coverage and quality of available reference climatic data and hydrological modelling approaches. This study attempts to address these issues by utilizing tranthe semi-distributed hydrological model SWAT with new climate datasets with better spatial and altitudinal representation as well as a wider range of future climate forcing models (GCM_REG) from the CORDEX- project, to assess different aspects of future hydrology (mean flows, extremes and seasonal changes). Contour maps for the mean annual flow and actual evapotranspiration as a function of the downscaled projected mean annual precipitation and temperatures are produced which can serve as a “hands-on” forecast tool of the future hydrology. The overall results of these future SWAT- hydrological projections indicate similar trends of changes in magnitudes, seasonal patterns and extremes of the UIB- streamflows for almost all climate scenarios/models/periods -combinations analysed. In particular, all but one GCM_REG- model – the one predicting a very high future temperature rise - indicate mean annual flow increases throughout the 21st century, wherefore, interestingly, these are stronger for the middle (2041-2070) than at its end (2071-2100). The seasonal shifts as well as the extremes follow also similar trends for all climate scenarios/models/periods – combinations, e.g. an earlier future arrival (in May-June instead of July-August) of high flows and increased spring and winter flows, with upper flow extremes (peaks) projected to drastically increase by 50 to >100%, and this with significantly decreased annual recurrence intervals, i.e. a tremendously increased future flood hazard for the UIB. The future low flows projections also show more extreme values, with lower than nowadays-experienced minimal flows, occurring more frequently and also with much longer annual total duration.
DSD-INT 2017 Infragravity Period Oscillations In A Channel Harbor Near A Rive...Deltares
Presentation by Florian Bellafont (Université Pau & Pays de l’Adour) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Rising seas, intensifying weather extremes and increasing impact...Deltares
Presentation by Michalis Vousdoukas, European Joint Research Centre, Italy, at the Symposium Knowledge and Innovation for Decision Making, during Delft Software Days - Edition 2017. Friday, 27 October 2017, Delft.
DSD-INT 2017 Long-term morphodynamics of muddy backbarrier basins - CanestrelliDeltares
Presentation by Alberto Canestrelli, University of Florida, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2018 Tidal propagation and salt intrusion in the multi-channel estuar...Deltares
Presentation by Sepehr Eslami Arab, University of Utrecht, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
Presentation given by Anna Rymszewicz, John O'Sullivan, Michael Bruen, Jonathan Turner, Elisabeth Conroy, Mary Kelly-Quinn & Damien Lawler at the SILTFLUX workshop, UCD, Dublin, February 2016
DSD-INT 2017 Groundwater system analysis using isotope measurement data, San ...Deltares
Presentation by Cinthya Gómez Castro (Costa Rica) at the iMOD International User Day, during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2017 Energy transfers and reflection of infragravity waves at a dissi...Deltares
Presentation by Anouk de Bakker (CNRS-Université de La Rochelle) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2017 Use of RIBASIM in Lesotho - PasschierDeltares
Presentation by Ron Passchier (Deltares) at the River Basin Planning and Modelling symposium, during Delft Software Days - Edition 2017. Wednesday, 25 October 2017, Delft.
Nepal does not have own climate projection model. Therefore, climate change studies in Nepal completely depend on the results of available model throughout the world. Many field based studies have proven that Nepal is the most vulnerable country in the context of climate change due to limited capacity to adapt to it. On the other hand, it is a big challenge to natural scientists to demonstrate climate change physically because of limited resources. Due to the complex geography of Nepal, most of the global climate projections are not able to capture the temporal and spatial climatic variability. In consideration to this problem, the Department of Hydrology and Meteorology (DHM) of Nepal has initiated a project to downscale climatic parameters regionally with technical support from the Asian Disaster Preparedness Centre (ADPC) under the financial support of Asian Development Bank (ADB). They used three different Regional Climate Models (RCM); PRECIS, RegCM4, and WRF under AR4 scenarios. However, there is still a lot of discrepancy among these projections which have created confusion among the stakeholders. Therefore, the objective of my presentation will be to focus on the discussion over these issues among the climate experts at UNBC.
Composite sea level prediction in the Mediterranean
Sea - comparisons with observations
By Florent Lyard and Laurent Roblou
Abstract
In this presentation, we focus on the sea level recorded and modelled in the Mediterranean Sea during the year
2002. Two dynamical models are made available to us, the first one designed to solve the ocean circulation
(Mercator Psy2-v1 (Newsletter Mercator N°8)) and the second one to solve the tide and storm surge processes
(Mog2D). We challenge the assumption that a combined use of those two models (i.e. through a full or partial
summation) should provide an optimal sea level predicting tool. By comparing with tide gauge measurements, the
predicting skills of models, alone and/or combined together, are estimated for different frequency ranges. The
two major conclusions that can be drawn from this study is that first a combination of low-pass filtered Mercator
plus Mog2D closely fits the recorded data, and second the Mog2D low frequency sea level signal is surprisingly
needed in this combination to obtain the best prediction (instead of the low-pass filtered Inverted Barometer
(IB)). Further investigations will be necessary to understand precisely the reasons of the latter finding.
Impacts of climate change on the water availability, seasonality and extremes...asimjk
Projecting future hydrology for the mountainous, highly glaciated upper Indus basin (UIB) is a challenging task, because of uncertainties in the future climate projections and issues with the coverage and quality of available reference climatic data and hydrological modelling approaches. This study attempts to address these issues by utilizing tranthe semi-distributed hydrological model SWAT with new climate datasets with better spatial and altitudinal representation as well as a wider range of future climate forcing models (GCM_REG) from the CORDEX- project, to assess different aspects of future hydrology (mean flows, extremes and seasonal changes). Contour maps for the mean annual flow and actual evapotranspiration as a function of the downscaled projected mean annual precipitation and temperatures are produced which can serve as a “hands-on” forecast tool of the future hydrology. The overall results of these future SWAT- hydrological projections indicate similar trends of changes in magnitudes, seasonal patterns and extremes of the UIB- streamflows for almost all climate scenarios/models/periods -combinations analysed. In particular, all but one GCM_REG- model – the one predicting a very high future temperature rise - indicate mean annual flow increases throughout the 21st century, wherefore, interestingly, these are stronger for the middle (2041-2070) than at its end (2071-2100). The seasonal shifts as well as the extremes follow also similar trends for all climate scenarios/models/periods – combinations, e.g. an earlier future arrival (in May-June instead of July-August) of high flows and increased spring and winter flows, with upper flow extremes (peaks) projected to drastically increase by 50 to >100%, and this with significantly decreased annual recurrence intervals, i.e. a tremendously increased future flood hazard for the UIB. The future low flows projections also show more extreme values, with lower than nowadays-experienced minimal flows, occurring more frequently and also with much longer annual total duration.
Greetings all,
This month’s newsletter is devoted to the Mediterranean Sea and its various faces.
As an introduction, an article by Drobinski et al. presents the HYMEX program (HYdrological cycle in Mediterranean
Experiment) which is aiming at better understanding the global water cycle in the Mediterranean region. The next article by
Langlais et al. is dealing with a high resolution coastal and shelf model in the Gulf of Lions. Then, Boy et al. are describing the
input from spatial gravimetry to better represent the ocean circulation in the Mediterranean Sea. The next article by D’Ovidio et
al. is telling us about tracer frontal structures induced by altimeter velocities with a lagrangian technique in the Eastern
Mediterranean Sea. The last article by L’Hévéder et al. is dealing with operational forecast of glider trajectories in the
Mediterranean Sea using the Mercator forecasts.
The next April 2009 newsletter will review the current work on ocean indices aiming at better understanding the state of the
ocean climate.
We wish you a pleasant reading.
In this work the impact of the tidal wave on pollutant residence time within Nador
lagoon has been computed using an Eulerian approach and a 2D hydrodynamical model.
The model is based on the finite volume method; it solves the shallow water equations on
spatial domain that represents the Nador lagoon. The residence time has been defined
through the remnant function of a passive tracer released inside the lagoon. The renewal
capacity of the Nador Lagoon has been investigated when forced by the astronomic tide.
The influence of tidal wave on residence time has been defined by the return flow, and
computed for two scenarios during winter and spring periods.
DSD-INT 2019 Understanding impact of extreme sea levels under climate change ...Deltares
Presentation by Kun Yan, Deltares, and Sanne Muis, VU University Amsterdam, at the Data Science Symposium, during Delft Software Days - Edition 2019. Thursday, 14 November 2019, Delft.
Introducing climate change in river basin managementLia Romano
3rd International Meeting on Meteorology and Climatology of the Mediterranean
POSTER
ABSTRACT
Within an increasing sensibility of international scientific community and public opinion about the issue, the recent European Directives in water policy, the Water Framework Directive 2000/60/EC and the Floods Directive 2007/60/EC - that provide legal instruments for protecting and restoring the water environment, as well as for reducing risks to human health, cultural heritage and economic activity - require the States Member to take into account the eventual trend induced by climate change, from which major changes in yearly and seasonal precipitation and water flow, flooding, coastal erosion and water quality arise.
The effects of the climate change on the hydrological cycle are usually carried out by means of climatic models working on a planetary scale and most of all forecast an drying trend in Southern Europe, unlike a wetting trend in the Northern Europe. On the other hand, at regional scale, the expected changes can be rather different, indeed forecast of precipitation and flow changes at river basin scale are less certain, due to large natural variability in these quantities, as well as the limitation of climate models, and assumptions used to downscale information from climate to hydrological models.
It follows that an important role of water managers would be to adopt plans to climate change impacts, individuating methodologies for evaluation of climate variability scenarios in the basins management, both for water scarcity management and for flood risk management in order to apply efficiently long term measures.
An important shortcoming of modelling tools that are used for managing hydro(geo)logical problems is that the tools are focusing on one specific compartment of the terrestrial system such as the groundwater, the soil water, or the surface water. However, the management of complex water related problems requires a holistic approach that considers the interactions between the different compartments at local and regional scales. For instance, the soil water status at a farmer’s field is influenced by the groundwater level whereas groundwater levels depend on the interaction with the surface water and on groundwater recharge and water infiltration and percolation through the soil in a larger area. Local measures that influence the water infiltration and surface water levels have an impact on the local soil water balance and groundwater recharge and influence groundwater levels and storage at a larger scale. These interactions between different compartments and acting at different spatial and temporal scales can be represented in fully coupled hydrological models of the terrestrial system that consider groundwater, soil, vegetation, and atmosphere. Using physics-based models, that solve mass and energy balance equations based on gradient-based estimates of fluxes, the different compartments can be coupled straightforwardly and consistently and information about the geology, soil types, vegetation, and topography of the region can be included in the model, in principle without calibration. One of the big advantages of physics-based models is that local changes can be related directly to parameter changes of the model so that their impact on the terrestrial water balance can be evaluated directly without requiring data about the reaction of the system to such changes that are needed to re-parameterize the model.
A coupled model integrating groundwater, surface water (ParFlow), and landsurface-atmosphere interactions (CLM) has been setup for central Europe including Germany, the Benelux (covering the entire Scheldt and Meuse catchments), Switzerland, Austria, and the Czech Republic. The model is parameterized using harmonized geological (International Hydrogeological Map of Europe) and soil data (SoilGrids texture), using generic land use classes, and topography at a spatial resolution of 611 by 611 m. This model is implemented on the GPU booster of the Jülich Supercomputer Centre and driven by atmospheric forecasts obtained from the ECMWF. It provides 10-day forecasts of the hydrological status of the terrestrial system (wassermonitor) and a time series of 10 years providing a climatology of hydrological variables such as water storage and groundwater level.
We give a short demonstration of the model and present simulat
The Effect of Geometry Parameters and Flow Characteristics on Erosion and Sed...Dr. Amarjeet Singh
One of the most critical problems in the river
engineering field is scouring, sedimentation and morphology
of a river bed. In this paper, a finite volume method
FORTRAN code is provided and used. The code is able to
model the sedimentation. The flow and sediment were
modeled at the interception of the two channels. It is applied
an experimental model to evaluate the results. Regarding the
numerical model, the effects of geometry parameters such as
proportion of secondary channel to main channel width and
intersection angle and also hydraulic conditionals like
secondary to main channel discharge ratio and inlet flow
Froude number were studied on bed topographical and flow
pattern. The numerical results show that the maximum
height of bed increased to 32 percent as the discharge ratio
reaches to 51 percent, on average. It is observed that the
maximum height of sedimentation decreases by declining in
main channel to secondary channel Froude number ratio. On
the assessment of the channel width, velocity and final bed
height variations have changed by given trend, in all the
ratios. Also, increasing in the intersection angle accompanied
by decreasing in flow velocity variations along the channel.
The pattern of velocity and topographical bed variations are
also constant in any studied angles.
DSD-INT 2023 Hydrology User Days - Intro - Day 3 - KroonDeltares
Presentation by Timo Kroon and Nadine Slootjes (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
Presentation by Sabrina Couvin Rodriguez (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Umit Taner (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Daan Rooze (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Approaches for assessing multi-hazard risk - WardDeltares
Presentation by Philip Ward (Deltares and IVM VU Amsterdam) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Andrew Warren (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Global hydrological modelling to support worldwide water assessm...Deltares
Presentation by Marc Bierkens (Utrecht University and Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Modelling implications - IPCC Working Group II - From AR6 to AR7...Deltares
Presentation by Bart van den Hurk (WGII Co-Chair, IPCC AR7, Deltares) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Knowledge and tools for Climate Adaptation - JeukenDeltares
Presentation by Ad Jeuken (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Coupling RIBASIM to a MODFLOW groundwater model - BootsmaDeltares
Presentation by Huite Bootsma (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Create your own MODFLOW 6 sub-variant - MullerDeltares
Presentation by Mike Muller (hydrocomputing GmbH & Co. KG, Germany) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Example of unstructured MODFLOW 6 modelling in California - RomeroDeltares
Presentation by Betsy Romero Verástegui (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Challenges and developments in groundwater modeling - BakkerDeltares
Presentation by Mark Bakker (Delft University of Technology, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Demo new features iMOD Suite - van EngelenDeltares
Presentation by Joeri van Engelen (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 iMOD and new developments - DavidsDeltares
Presentation by Tess Davids (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
Presentation by Christian Langevin (U.S. Geological Survey (USGS), USA) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Hydrology User Days - Presentations - Day 2Deltares
Presentation by several speakers at the Hydrology Suite User Days (Day 2) - wflow and HydroMT, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Needs related to user interfaces - SnippenDeltares
Presentation by Edwin Snippen (Deltares, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
DSD-INT 2023 Coupling RIBASIM to a MODFLOW groundwater model - BootsmaDeltares
Presentation by Huite Bootsma (Deltares, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
DSD-INT 2023 Parameterization of a RIBASIM model and the network lumping appr...Deltares
Presentation by Harm Nomden (SWECO, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
Developing Distributed High-performance Computing Capabilities of an Open Sci...Globus
COVID-19 had an unprecedented impact on scientific collaboration. The pandemic and its broad response from the scientific community has forged new relationships among public health practitioners, mathematical modelers, and scientific computing specialists, while revealing critical gaps in exploiting advanced computing systems to support urgent decision making. Informed by our team’s work in applying high-performance computing in support of public health decision makers during the COVID-19 pandemic, we present how Globus technologies are enabling the development of an open science platform for robust epidemic analysis, with the goal of collaborative, secure, distributed, on-demand, and fast time-to-solution analyses to support public health.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
CyanicLab, an offshore custom software development company based in Sweden,India, Finland, is your go-to partner for startup development and innovative web design solutions. Our expert team specializes in crafting cutting-edge software tailored to meet the unique needs of startups and established enterprises alike. From conceptualization to execution, we offer comprehensive services including web and mobile app development, UI/UX design, and ongoing software maintenance. Ready to elevate your business? Contact CyanicLab today and let us propel your vision to success with our top-notch IT solutions.
Listen to the keynote address and hear about the latest developments from Rachana Ananthakrishnan and Ian Foster who review the updates to the Globus Platform and Service, and the relevance of Globus to the scientific community as an automation platform to accelerate scientific discovery.
Designing for Privacy in Amazon Web ServicesKrzysztofKkol1
Data privacy is one of the most critical issues that businesses face. This presentation shares insights on the principles and best practices for ensuring the resilience and security of your workload.
Drawing on a real-life project from the HR industry, the various challenges will be demonstrated: data protection, self-healing, business continuity, security, and transparency of data processing. This systematized approach allowed to create a secure AWS cloud infrastructure that not only met strict compliance rules but also exceeded the client's expectations.
Why React Native as a Strategic Advantage for Startup Innovation.pdfayushiqss
Do you know that React Native is being increasingly adopted by startups as well as big companies in the mobile app development industry? Big names like Facebook, Instagram, and Pinterest have already integrated this robust open-source framework.
In fact, according to a report by Statista, the number of React Native developers has been steadily increasing over the years, reaching an estimated 1.9 million by the end of 2024. This means that the demand for this framework in the job market has been growing making it a valuable skill.
But what makes React Native so popular for mobile application development? It offers excellent cross-platform capabilities among other benefits. This way, with React Native, developers can write code once and run it on both iOS and Android devices thus saving time and resources leading to shorter development cycles hence faster time-to-market for your app.
Let’s take the example of a startup, which wanted to release their app on both iOS and Android at once. Through the use of React Native they managed to create an app and bring it into the market within a very short period. This helped them gain an advantage over their competitors because they had access to a large user base who were able to generate revenue quickly for them.
Globus Connect Server Deep Dive - GlobusWorld 2024Globus
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DSD-INT 2019 Elbe Estuary Modelling Case Studies-Stanev
1. Elbe Estuary. Modelling Case Studies
Emil V. Stanev
DANUBIUS Modelling Workshop
Friday, 08 November 2019,
Delft, The Netherlands
(Elbe Delta)
2. Motivation
1. Share knowledge and experience about the modelling of river-sea systems.
2. Consider possible research-support when solving society-relevant issues,
climate change and environmental protection
Focus on
1. What happens when the river water encounters the sea water?
2. Nesting and seamless approach; coupling different modules
Outline
1. Introduction
2. SCHISM
3. SED3D
4. WWM
5. ECOSMO
3. 1. Introduction (challenges)
The water cycle
Global European Seas
J.P. Peixoto & A.H. Oort, Physics of Climate, 1992
Stanev and Lu (2013)
4. Chl-a
µg/l
Remote Sensing & FerryBox Data
1°E 2°E 3°E 4°E 5°E 6°E 7°E 8°E
54°N
52°N
FerryBox
Sediment dynamics and biogeochemical processes
W. Schröder, personal communication
5. W. Schröder, personal communication
Vertical mixing: a
fundamental
ingredient of
coastal models
6. Where the river meets the sea
Different estuaries and mixing processes
• How is the "salt balance" maintained in
an estuary?
• Why does the river water not simply
flush out all the salt and turn the
estuary into fresh water?
Strongly, partially mixed, salt wedge estuaries
7. Hansen & Rattray, (J. Marine Research, 23, 104-122; 1965)
CD is the friction parameter,
UT is the amplitude of the depth-averaged tidal velocity,
ω is the tidal frequency,
No = (βgsocean/H)1/2 is the buoyancy frequency,
H is the depth,
UR is the velocity of river flow,
ß= 7.7 × 10-4 is the coefficient of salinity contraction,
and g is the gravitational acceleration.
M2 = CDUT
2/(ωNo H2)
Estuarine classification
Geyer and MacCready
(Annu. Rev. Fluid Mech. 2014. 46:175–97)
M2 = CDUT
2/(ωNo H2) quantifies the effectiveness of tidal
mixing measuring the ratio of the tidal timescale to the
vertical mixing timescale.
Frf = UR/(ßgsoceanH)1/2, freshwater
Froude number measuring the
ratio between the net velocity due
to river flow and the maximum
frontal propagation speed No H.
8. Hydrology
HD-Modell
2. The model
GCOAST Modelling system
Waves
WAM
Atmosphere
COSMO-CCLM
Ocean
NEMO/SCHISM
Biogeochemistry
ECOSMO/E2E
Atm. Chemistry
CMAQ
Marine
chemistry
MECOSMO
Bio-
accumulation
Drift
Models
Coupler
OASIS
SPM
9. 3D, primitive equations, unstructured-grid.
- Upgrade from an existing model (SELFE, A Semi-implicit
Eulerian-Lagrangian Finite Element model for cross-scale
ocean circulation).
- Uses hybrid finite element and finite volume approach.
- New viscosity formulation (effectively filters out spurious
modes without introducing excessive dissipation).
Semi-implicit Cross-scale Hydroscience
Integrated System
Model; www.schism.wiki
- New higher-order implicit advection
scheme for transport (TVD2) is proposed
to effectively handle a wide range of
Courant numbers
- Addition of quadrangular elements
into the model
- Flexible vertical grid system (Zhang et
al. 2015, OM)
- Model polymorphism that unifies
1D/2DH/2DV/3D cells in a single model
grid.
Zhang Y.J., F. Ye, E. V. Stanev, and S. Grashorn
(2016, Ocean Modelling).
13. 3. SPM dynamics
• A zone within which the
suspended sediment
concentrations are higher than
those in the river or further
down in the estuary.
• The turbidity maximum occurs
more often in well-mixed and
partially-mixed estuaries, and
less often in stratified estuaries.
• In many places the turbidity
maximum contains more
sediment than brought by rivers.
16. 4. Wind waves. WWM III and ist coupling with SCHISM
-WWM III (third generation spectral wave model) is described by
Roland et al. (2012).
-Wind input and dissipation is as in Bidlot et al. (2002).
-SCHISM gets from WWM III the radiation stress.
-The coupling between the wind-wave and the circulation model is
made through the friction velocity computed from the wave model
(Bertin et al., 2015).
-The source terms for depth-induced wave breaking and bottom
friction are computed as explained by Bertin et al. (2015).
Schloen et al. (2017, OMOD)
17. Model validation
Wind speed and significant wave height in July 2013
The meteorological situation
and wind waves
Observed and simulated significant wave height, direction and peak period
18. Left: Spatial and temporal variability of difference between
salinity simulated in experiment RWF and RF: Consequent
snapshots during one tidal period are shown for 23-24.07.
Velocity-difference vectors are also plotted. Right: Time versus
distance diagram along a section line north of the islands.
(a) The ratio of significant wave height and tidal range
averaged along the transect line north of the islands. (b)
Wind speed and direction along the section line. (c)
Difference of the u-component between experiment RWF
and RF.
Temporal-spatial variability
19. (a) The ratio of significant wave height and tidal range averaged for the whole model run and for a period
with high waves (23 Jul 2011). (b) Vertical profile of difference in salinity on transect along the tidal channel
for RWF and RF averaged over 16 tidal M2-periods.
Estuarine implications
20. Results
- Density gradients in the coastal zone reduce the tidal current by 18 %.
- Wind waves enhance the circulation in some cases. The latter happens when strong
winds blow resulting in long-shore currents following the western Dutch coast and
the German Wadden Sea islands.
- The wave-induced transport of salt leads to changes in the horizontal salinity
distribution, which are very pronounced in regions of fresh water influence.
- The weak stratification dominating the patterns of salinity in the coastal zone is
mostly destroyed by wind waves. Thus, effects created by wind waves tend to
substantially modify the estuarine circulation.
- More extended description of the results can be found in Schloen et al. (2017).
21. WGE
5. BGC modelling
Elbe model coupled hydrodynamically to bigger set-up (GB), atmospheric forcing
by DWD data, river discharge, nutrient and plankton load from observations
22. 22
Ecological module: ECOSMO2 – a
pelagic NPZD model plus bottom pool of
nutrients
Coupler: FABM (Bruggeman & Bolding,
2014) linking hydrodynamics and
ecology
ELBE BGC-MODELLING SYSTEM
Set-up characteristcs: 33k horizontal nodes, 20
s-layers, TVD² transport, KL-turbulence model.
ECOSMO/
MAECS/ SPM
FABM
Daewel & Schrum, 2013
Schrum et al., 2006
26. Conclusions
Coastal ocean modelling is nowadays mature enough to
address practical issues from coastal engineering,
search and rescue, BGC, green energy, coastal management,
response to climate change
Emil.Stanev@hzg.de