Cornelis (Kees) Nederhoff
Modeling Scientist, Contractor from Deltares
Science and Products
Future coastal hazards along the U.S. Atlantic coast
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms for three States (Florida, Georgia, and Virginia) along the Atlantic coast of the United States. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available science and with enough resolution to support a suite of different plann
Future coastal hazards along the U.S. North and South Carolina coasts
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms along the North and South Carolina coast. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available, science and with enough resolution to support a suite of different planning horizons. The storm scenarios are derived with the
Wave model results of the central Beaufort Sea coast, Alaska
A three-level SWAN (version 41.31) nesting grid has been developed for the central Beaufort Sea coast to simulate waves over the hindcast period 1979 - 2019. The model includes the implementations of sea ice by Rogers (2019) and includes both 1) a dissipation source term and 2) a scaling of wind input source as functions by sea ice. The bathymetric dataset used for the model is the International
Hydrodynamic model of the San Francisco Bay and Delta, California
A two-dimensional hydrodynamic model of the San Francisco Bay and Delta was constructed using the Delft3D Flexible Mesh (DFM) modeling suite (www.deltares.nl/en/software/delft3d-flexible-mesh-suite/) to simulate water levels. Required model input files are provided to run the model for the time period from October 1, 2018, to April 30, 2019. This data release describes the construction and validat
Filter Total Items: 17
Projections of multiple climate-related coastal hazards for the US Southeast Atlantic
Faced with accelerating sea level rise and changing ocean storm conditions, coastal communities require comprehensive assessments of climate-driven hazard impacts to inform adaptation measures. Previous studies have focused on flooding but rarely on other climate-related coastal hazards, such as subsidence, beach erosion and groundwater. Here, we project societal exposure to multiple hazards along
Authors
Patrick L. Barnard, Kevin M. Befus, Jeffrey J. Danielson, Anita C Engelstad, Li H. Erikson, Amy C. Foxgrover, Maya Kumari Hayden, Daniel J. Hoover, Tim Leijnse, Chris Massey, Robert T. McCall, Norberto Nadal-Caraballo, Kees Nederhoff, Andrea C. O'Neill, Kai Alexander Parker, Manoochehr Shirzaei, Leonard O. Ohenhen, Peter W Swarzenski, Jennifer Anne Thomas, Maarten van Ormondt, Sean Vitousek, Killian Vos, Nathan J. Wood, Jeanne M. Jones, Jamie Jones
The projected exposure and response of a natural barrier island system to climate-driven coastal hazards
Accelerating sea level rise (SLR) and changing storm patterns will increasingly expose barrier islands to coastal hazards, including flooding, erosion, and rising groundwater tables. We assess the exposure of Cape Lookout National Seashore, a barrier island system in North Carolina (USA), to projected SLR and storm hazards over the twenty-first century. We estimate that with 0.5 m of SLR, 47% of c
Authors
Jennifer Anne Thomas, Patrick L. Barnard, Sean Vitousek, Li H. Erikson, Kai Alexander Parker, Kees Nederhoff, Kevin M. Befus, Manoochehr Shirzaei
A dataset of two-dimensional XBeach model set-up files for northern California
Here, we describe a dataset of two-dimensional (2D) XBeach model files that were developed for the Coastal Storm Modeling System (CoSMoS) in northern California as an update to an earlier CoSMoS implementation that relied on one-dimensional (1D) modeling methods. We provide details on the data and their application, such that they might be useful to end-users for other coastal studies. Modeling me
Authors
Andrea C. O'Neill, Cornelis M. Nederhoff, Li H. Erikson, Jennifer Anne Thomas, Patrick L. Barnard
Tropical or extratropical cyclones: What drives the compound flood hazard, impact, and risk for the United States Southeast Atlantic coast?
Subtropical coastlines are impacted by both tropical and extratropical cyclones. While both may lead to substantial damage to coastal communities, it is difficult to determine the contribution of tropical cyclones to coastal flooding relative to that of extratropical cyclones. We conduct a large-scale flood hazard and impact assessment across the subtropical Southeast Atlantic Coast of the United
Authors
Kees Nederhoff, Tim Leijnse, Kai Alexander Parker, Jennifer Anne Thomas, Andrea O'Neill, Maarten van Ormondt, Robert T. McCall, Li H. Erikson, Patrick L. Barnard, Amy C. Foxgrover, Wouter Klessens, Norberto C. Nadal-Caraballo, Chris Massey
Improved efficient physics-based computational modeling of regional wave-driven coastal flooding for reef-lined coastlines
Coastal flooding affects low-lying communities worldwide and is expected to increase with climate change, especially along reef-lined coasts, where wave-driven flooding is particularly prevalent. However, current regional modeling approaches are either insufficient or too computationally expensive to accurately assess risks in these complex environments. This study introduces and validates an impr
Authors
Camila Gaido-Lassarre, Kees Nederhoff, Curt Storlazzi, Borja Reguero, Michael W. Beck
Database and time series of nearshore waves along the Alaskan coast from the United States-Canada border to the Bering Sea
Alaska’s Arctic coast has some of the highest coastal erosion rates in the world, primarily driven by permafrost thaw and increasing wave energy. In the Arctic, a warming climate is driving sea ice cover to decrease in space and time. A lack of long-term observational wave data along Alaska’s coast challenges the ability of engineers, scientists, and planners to study and address threats and effec
Authors
Anita C. Engelstad, Li H. Erikson, Borja G. Reguero, Ann E. Gibbs, Kees Nederhoff
Forecasting storm-induced coastal flooding for 21st century sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands
Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding in the populated Hawaiian, Mariana, and American Samoan Islands as a result of climate change and sea-level rise. We followed a hybrid (dynamical and statistical) downscaling approach to map flooding due to waves and storm surge at 10-square me
Authors
Curt D. Storlazzi, Borja G. Reguero, Camila Gaido L., Kristen C. Alkins, Chris Lowry, Cornelis M. Nederhoff, Li H. Erikson, Andrea C. O'Neill, Michael W. Beck
Dynamic modeling of coastal compound flooding hazards due to tides, extratropical storms, waves, and sea-level rise: A case study in the Salish Sea, Washington (USA)
The Puget Sound Coastal Storm Modeling System (PS-CoSMoS) is a tool designed to dynamically downscale future climate scenarios (i.e., projected changes in wind and pressure fields and temperature) to compute regional water levels, waves, and compound flooding over large geographic areas (100 s of kilometers) at high spatial resolutions (1 m) pertinent to coastal hazard assessments and planning. Th
Authors
Kees Nederhoff, Sean C. Crosby, Nathan R. vanArendonk, Eric E. Grossman, Babak Tehranirad, T. Leijnse, W. Klessens, Patrick L. Barnard
Modeling extreme water levels in the Salish Sea: The importance of including remote sea level anomalies for application in hydrodynamic simulations
Extreme water-level recurrence estimates for a complex estuary using a high-resolution 2D model and a new method for estimating remotely generated sea level anomalies (SLAs) at the model boundary have been developed. The hydrodynamic model accurately resolves the dominant physical processes contributing to extreme water levels across the Washington State waters of the Salish Sea, including the rel
Authors
Eric E. Grossman, Babak Tehranirad, Kees Nederhoff, Sean Crosby, Andrew W. Stevens, Nathan R. VanArendonk, Daniel J. Nowacki, Li H. Erikson, Patrick L. Barnard
Compound flood model for the lower Nooksack River and delta, western Washington—Assessment of vulnerability and nature-based adaptation opportunities to mitigate higher sea level and stream flooding
Higher sea level and stream runoff associated with climate change is expected to lead to greater lowland flooding across the Pacific Northwest. Increases in stream runoff that range from 20 to 32 percent by the 2040s and from 52 to 72 percent by the 2080s is expected to steadily increase flood risk. Flood risk is also expected to increase in response to the landward shift in high tides and storm s
Authors
Eric E. Grossman, Nathan R. vanArendonk, Cornelis M. Nederhoff
Efficient modeling of wave generation and propagation in a semi-enclosed estuary
Accurate, and high-resolution wave statistics are critical for regional hazard mapping and planning. However, long-term simulations at high spatial resolution are often computationally prohibitive. Here, multiple rapid frameworks including fetch-limited, look-up-table (LUT), and linear propagation are combined and tested in a large estuary exposed to both remotely (swell) and locally generated wav
Authors
Sean C. Crosby, Cornelis M. Nederhoff, Nathan R. VanArendonk, Eric E. Grossman
The influence of vegetated marshes on wave transformation in sheltered estuaries
Assessing the influence of marshes on mitigating flooding along estuarine shorelines under the pressures of sea level rise requires understanding wave transformation across the marsh. A numerical model was applied to investigate how vegetated marshes influence wave transformation. XBeach non-hydrostatic (XB-NH) was calibrated and validated with high frequency pressure data from the marsh at China
Authors
Rae M. Taylor-Burns, Cornelis M. Nederhoff, Jessica R. Lacy, Patrick L. Barnard
Science and Products
Future coastal hazards along the U.S. Atlantic coast
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms for three States (Florida, Georgia, and Virginia) along the Atlantic coast of the United States. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available science and with enough resolution to support a suite of different plann
Future coastal hazards along the U.S. North and South Carolina coasts
This product consists of several datasets that map future coastal flooding and erosion hazards due to sea level rise (SLR) and storms along the North and South Carolina coast. The SLR scenarios encompass a plausible range of projections by 2100 based on the best available, science and with enough resolution to support a suite of different planning horizons. The storm scenarios are derived with the
Wave model results of the central Beaufort Sea coast, Alaska
A three-level SWAN (version 41.31) nesting grid has been developed for the central Beaufort Sea coast to simulate waves over the hindcast period 1979 - 2019. The model includes the implementations of sea ice by Rogers (2019) and includes both 1) a dissipation source term and 2) a scaling of wind input source as functions by sea ice. The bathymetric dataset used for the model is the International
Hydrodynamic model of the San Francisco Bay and Delta, California
A two-dimensional hydrodynamic model of the San Francisco Bay and Delta was constructed using the Delft3D Flexible Mesh (DFM) modeling suite (www.deltares.nl/en/software/delft3d-flexible-mesh-suite/) to simulate water levels. Required model input files are provided to run the model for the time period from October 1, 2018, to April 30, 2019. This data release describes the construction and validat
Filter Total Items: 17
Projections of multiple climate-related coastal hazards for the US Southeast Atlantic
Faced with accelerating sea level rise and changing ocean storm conditions, coastal communities require comprehensive assessments of climate-driven hazard impacts to inform adaptation measures. Previous studies have focused on flooding but rarely on other climate-related coastal hazards, such as subsidence, beach erosion and groundwater. Here, we project societal exposure to multiple hazards along
Authors
Patrick L. Barnard, Kevin M. Befus, Jeffrey J. Danielson, Anita C Engelstad, Li H. Erikson, Amy C. Foxgrover, Maya Kumari Hayden, Daniel J. Hoover, Tim Leijnse, Chris Massey, Robert T. McCall, Norberto Nadal-Caraballo, Kees Nederhoff, Andrea C. O'Neill, Kai Alexander Parker, Manoochehr Shirzaei, Leonard O. Ohenhen, Peter W Swarzenski, Jennifer Anne Thomas, Maarten van Ormondt, Sean Vitousek, Killian Vos, Nathan J. Wood, Jeanne M. Jones, Jamie Jones
The projected exposure and response of a natural barrier island system to climate-driven coastal hazards
Accelerating sea level rise (SLR) and changing storm patterns will increasingly expose barrier islands to coastal hazards, including flooding, erosion, and rising groundwater tables. We assess the exposure of Cape Lookout National Seashore, a barrier island system in North Carolina (USA), to projected SLR and storm hazards over the twenty-first century. We estimate that with 0.5 m of SLR, 47% of c
Authors
Jennifer Anne Thomas, Patrick L. Barnard, Sean Vitousek, Li H. Erikson, Kai Alexander Parker, Kees Nederhoff, Kevin M. Befus, Manoochehr Shirzaei
A dataset of two-dimensional XBeach model set-up files for northern California
Here, we describe a dataset of two-dimensional (2D) XBeach model files that were developed for the Coastal Storm Modeling System (CoSMoS) in northern California as an update to an earlier CoSMoS implementation that relied on one-dimensional (1D) modeling methods. We provide details on the data and their application, such that they might be useful to end-users for other coastal studies. Modeling me
Authors
Andrea C. O'Neill, Cornelis M. Nederhoff, Li H. Erikson, Jennifer Anne Thomas, Patrick L. Barnard
Tropical or extratropical cyclones: What drives the compound flood hazard, impact, and risk for the United States Southeast Atlantic coast?
Subtropical coastlines are impacted by both tropical and extratropical cyclones. While both may lead to substantial damage to coastal communities, it is difficult to determine the contribution of tropical cyclones to coastal flooding relative to that of extratropical cyclones. We conduct a large-scale flood hazard and impact assessment across the subtropical Southeast Atlantic Coast of the United
Authors
Kees Nederhoff, Tim Leijnse, Kai Alexander Parker, Jennifer Anne Thomas, Andrea O'Neill, Maarten van Ormondt, Robert T. McCall, Li H. Erikson, Patrick L. Barnard, Amy C. Foxgrover, Wouter Klessens, Norberto C. Nadal-Caraballo, Chris Massey
Improved efficient physics-based computational modeling of regional wave-driven coastal flooding for reef-lined coastlines
Coastal flooding affects low-lying communities worldwide and is expected to increase with climate change, especially along reef-lined coasts, where wave-driven flooding is particularly prevalent. However, current regional modeling approaches are either insufficient or too computationally expensive to accurately assess risks in these complex environments. This study introduces and validates an impr
Authors
Camila Gaido-Lassarre, Kees Nederhoff, Curt Storlazzi, Borja Reguero, Michael W. Beck
Database and time series of nearshore waves along the Alaskan coast from the United States-Canada border to the Bering Sea
Alaska’s Arctic coast has some of the highest coastal erosion rates in the world, primarily driven by permafrost thaw and increasing wave energy. In the Arctic, a warming climate is driving sea ice cover to decrease in space and time. A lack of long-term observational wave data along Alaska’s coast challenges the ability of engineers, scientists, and planners to study and address threats and effec
Authors
Anita C. Engelstad, Li H. Erikson, Borja G. Reguero, Ann E. Gibbs, Kees Nederhoff
Forecasting storm-induced coastal flooding for 21st century sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands
Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding in the populated Hawaiian, Mariana, and American Samoan Islands as a result of climate change and sea-level rise. We followed a hybrid (dynamical and statistical) downscaling approach to map flooding due to waves and storm surge at 10-square me
Authors
Curt D. Storlazzi, Borja G. Reguero, Camila Gaido L., Kristen C. Alkins, Chris Lowry, Cornelis M. Nederhoff, Li H. Erikson, Andrea C. O'Neill, Michael W. Beck
Dynamic modeling of coastal compound flooding hazards due to tides, extratropical storms, waves, and sea-level rise: A case study in the Salish Sea, Washington (USA)
The Puget Sound Coastal Storm Modeling System (PS-CoSMoS) is a tool designed to dynamically downscale future climate scenarios (i.e., projected changes in wind and pressure fields and temperature) to compute regional water levels, waves, and compound flooding over large geographic areas (100 s of kilometers) at high spatial resolutions (1 m) pertinent to coastal hazard assessments and planning. Th
Authors
Kees Nederhoff, Sean C. Crosby, Nathan R. vanArendonk, Eric E. Grossman, Babak Tehranirad, T. Leijnse, W. Klessens, Patrick L. Barnard
Modeling extreme water levels in the Salish Sea: The importance of including remote sea level anomalies for application in hydrodynamic simulations
Extreme water-level recurrence estimates for a complex estuary using a high-resolution 2D model and a new method for estimating remotely generated sea level anomalies (SLAs) at the model boundary have been developed. The hydrodynamic model accurately resolves the dominant physical processes contributing to extreme water levels across the Washington State waters of the Salish Sea, including the rel
Authors
Eric E. Grossman, Babak Tehranirad, Kees Nederhoff, Sean Crosby, Andrew W. Stevens, Nathan R. VanArendonk, Daniel J. Nowacki, Li H. Erikson, Patrick L. Barnard
Compound flood model for the lower Nooksack River and delta, western Washington—Assessment of vulnerability and nature-based adaptation opportunities to mitigate higher sea level and stream flooding
Higher sea level and stream runoff associated with climate change is expected to lead to greater lowland flooding across the Pacific Northwest. Increases in stream runoff that range from 20 to 32 percent by the 2040s and from 52 to 72 percent by the 2080s is expected to steadily increase flood risk. Flood risk is also expected to increase in response to the landward shift in high tides and storm s
Authors
Eric E. Grossman, Nathan R. vanArendonk, Cornelis M. Nederhoff
Efficient modeling of wave generation and propagation in a semi-enclosed estuary
Accurate, and high-resolution wave statistics are critical for regional hazard mapping and planning. However, long-term simulations at high spatial resolution are often computationally prohibitive. Here, multiple rapid frameworks including fetch-limited, look-up-table (LUT), and linear propagation are combined and tested in a large estuary exposed to both remotely (swell) and locally generated wav
Authors
Sean C. Crosby, Cornelis M. Nederhoff, Nathan R. VanArendonk, Eric E. Grossman
The influence of vegetated marshes on wave transformation in sheltered estuaries
Assessing the influence of marshes on mitigating flooding along estuarine shorelines under the pressures of sea level rise requires understanding wave transformation across the marsh. A numerical model was applied to investigate how vegetated marshes influence wave transformation. XBeach non-hydrostatic (XB-NH) was calibrated and validated with high frequency pressure data from the marsh at China
Authors
Rae M. Taylor-Burns, Cornelis M. Nederhoff, Jessica R. Lacy, Patrick L. Barnard