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Clifford I Voss, Ph.D. (Former Employee)

Science and Products

Image: Coral reefs, Kwajalein Atoll, Republic of the Marshall Islands

The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

Providing basic understanding and specific information on storm-wave inundation of atoll islands that house Department of Defense installations, and assessing the resulting impact of sea-level rise and storm-wave inundation on infrastructure and freshwater availability under a variety of sea-level rise and climatic scenarios.
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center
The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

Providing basic understanding and specific information on storm-wave inundation of atoll islands that house Department of Defense installations, and assessing the resulting impact of sea-level rise and storm-wave inundation on infrastructure and freshwater availability under a variety of sea-level rise and climatic scenarios.
Learn More
Field area representing use of arsenic contaminated groundwater for irrigation.

Characterizing global variability in groundwater arsenic

Groundwater contaminated with naturally occurring arsenic is a widespread problem affecting many alluvial and deltaic aquifer systems throughout the world. The human health toll from consuming groundwater with high levels of arsenic is staggering in its proportions. Furthermore, the use of arsenic contaminated groundwater for irrigation is observed to result in diminished crop yields and...
By
John Wesley Powell Center for Analysis and Synthesis
Characterizing global variability in groundwater arsenic

Characterizing global variability in groundwater arsenic

Groundwater contaminated with naturally occurring arsenic is a widespread problem affecting many alluvial and deltaic aquifer systems throughout the world. The human health toll from consuming groundwater with high levels of arsenic is staggering in its proportions. Furthermore, the use of arsenic contaminated groundwater for irrigation is observed to result in diminished crop yields and thus
Learn More
Birdsall-Dreiss Distinguished Lecturer Clifford I. Voss

Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Clifford Voss was selected as the 2015 Birdsall-Dreiss Distinguished Lecturer by the Geological Society of America. Cliff, an internationally recognized expert in groundwater modeling, has over 35 years of project management, implementation, field work and research experience in groundwater systems. Upon request, Cliff will present general-audience lectures on groundwater or ground ice/permafrost.
Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Clifford Voss was selected as the 2015 Birdsall-Dreiss Distinguished Lecturer by the Geological Society of America. Cliff, an internationally recognized expert in groundwater modeling, has over 35 years of project management, implementation, field work and research experience in groundwater systems. Upon request, Cliff will present general-audience lectures on groundwater or ground ice/permafrost.
Learn More
Filter Total Items: 78

SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin

Version 4.0 of the Saturated-Unsaturated Transport (SUTRA) software code provides the capability to simulate the freezing and thawing of groundwater during energy transport simulations under saturated and unsaturated conditions. In addition to the types of hydrogeologic processes that SUTRA has been able to simulate in the past, this version can be used to study the effects of the freeze...
Authors
Clifford I. Voss, Alden M. Provost, Jeffrey M. McKenzie, Barret L. Kurylyk
By
Water Resources Mission Area

Subsurface porewater flow accelerates talik development under the Alaska Highway, Yukon: A prelude to road collapse and permafrost thaw? Subsurface porewater flow accelerates talik development under the Alaska Highway, Yukon: A prelude to road collapse and permafrost thaw?

The presence of taliks (perennially unfrozen zones in permafrost areas) adversely affects the thermal stability of infrastructure in cold regions, including roads. The role of heat advection on talik development and feedback on permafrost degradation has not been quantified methodically in this context. We incorporate a surface energy balance model into a coupled groundwater flow and...
Authors
Lin Chen, Daniel Fortier, Jeffrey M. McKenzie, Clifford I. Voss, Pierrick Lamontagne-Halle
By
Water Resources Mission Area

Hydrologic modeling of a perennial firn aquifer in southeast Greenland Hydrologic modeling of a perennial firn aquifer in southeast Greenland

A conceptual model, based on field observations and assumed physics of a perennial firn aquifer near Helheim Glacier (southeast Greenland), is evaluated via steady-state 2-D simulation of liquid water flow and energy transport with phase change. The simulation approach allows natural representation of flow and energy advection and conduction that occur in vertical meltwater recharge...
Authors
Olivia Miller, Clifford I. Voss, D. Kip Solomon, Clement Miege, Richard Forster, Nicholas Schmerr, Lynn Montgomery
By
Water Resources Mission Area

Surface energy balance of sub-Arctic roads with varying snow regimes and properties in permafrost regions Surface energy balance of sub-Arctic roads with varying snow regimes and properties in permafrost regions

Surface energy balance (SEB) strongly influences the thermal state of permafrost, cryohydrological processes, and infrastructure stability. Road construction and snow accumulation affect the energy balance of underlying permafrost. Herein, we use an experimental road section of the Alaska Highway to develop a SEB model to quantify the surface energy components and ground surface...
Authors
Lin Chen, Clifford I. Voss, Daniel Fortier, Jeffrey M. McKenzie
By
Water Resources Mission Area

Simulating water and heat transport with freezing and cryosuction in unsaturated soil: Comparing an empirical, semi-empirical and physically-based approach Simulating water and heat transport with freezing and cryosuction in unsaturated soil: Comparing an empirical, semi-empirical and physically-based approach

Freezing of unsaturated soil is an important process that influences runoff and infiltration in cold-climate regions. We used a simple numerical model to simulate water and heat transport with phase change in unsaturated soil via three different approaches: empirical, semi-empirical and physically based. We compared the performance and parameterization of each approach through testing on...
Authors
Joris C Stuurop, Sjoerd E. A. T. M van der Zee, Clifford I. Voss, Helen K French
By
Water Resources Mission Area

The firn meltwater Retention Model Intercomparison Project (RetMIP): Evaluation of nine firn models at four weather station sites on the Greenland ice sheet The firn meltwater Retention Model Intercomparison Project (RetMIP): Evaluation of nine firn models at four weather station sites on the Greenland ice sheet

Perennial snow, or firn, covers 80 % of the Greenland ice sheet and has the capacity to retain surface meltwater, influencing the ice sheet mass balance and contribution to sea-level rise. Multilayer firn models are traditionally used to simulate firn processes and estimate meltwater retention. We present, intercompare and evaluate outputs from nine firn models at four sites that...
Authors
Baptiste Vandecrux, Ruth Mottram, Peter Langen, Robert Fausto, Martin Olesen, C. Max Stevens, Vincent Verjans, Amber Lee, Stefan Ligtenberg, Peter Kuipers Munneke, Sergey S. Marchenko, Ward van Pelt, Colin R. Meyer, Sebastian B. Simonsen, Achim Heilig, Samira Samimi, Shawn J. Marshall, Horst Machguth, Michael J. MacFerrin, Masashi Niwano, Olivia L. Miller, Clifford I. Voss, Jason E. Box
By
Water Resources Mission Area, Utah Water Science Center

SUTRA: A Model for 2D or 3D Saturated-Unsaturated, Variable-Density Ground-Water Flow With Solute or Energy Transport SUTRA: A Model for 2D or 3D Saturated-Unsaturated, Variable-Density Ground-Water Flow With Solute or Energy Transport

SutraSuite is a collection of software for groundwater modeling in both two spatial dimensions (2D) and three spatial dimensions (3D). It includes the SUTRA groundwater model, the SutraGUI pre-processor, the SutraPrep text-based preprocessor, and the SutraPolot post-processor.
By
Water Resources Mission Area

SutraGUI: Graphical Pre- and Post-Processor for SUTRA SutraGUI: Graphical Pre- and Post-Processor for SUTRA

SutraGUI is a graphical environment for setting up and executing 2D and 3D SUTRA runs, and for visualizing results from 2D SUTRA runs. It is compatible with SUTRA Version 2.2 and requires Argus Open Numerical Environments (Argus ONE) commercial software,
By
Water Resources Mission Area

Science and Products

Image: Coral reefs, Kwajalein Atoll, Republic of the Marshall Islands

The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

Providing basic understanding and specific information on storm-wave inundation of atoll islands that house Department of Defense installations, and assessing the resulting impact of sea-level rise and storm-wave inundation on infrastructure and freshwater availability under a variety of sea-level rise and climatic scenarios.
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center
The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

The Impact of Sea-Level Rise and Climate Change on Pacific Ocean Atolls

Providing basic understanding and specific information on storm-wave inundation of atoll islands that house Department of Defense installations, and assessing the resulting impact of sea-level rise and storm-wave inundation on infrastructure and freshwater availability under a variety of sea-level rise and climatic scenarios.
Learn More
Field area representing use of arsenic contaminated groundwater for irrigation.

Characterizing global variability in groundwater arsenic

Groundwater contaminated with naturally occurring arsenic is a widespread problem affecting many alluvial and deltaic aquifer systems throughout the world. The human health toll from consuming groundwater with high levels of arsenic is staggering in its proportions. Furthermore, the use of arsenic contaminated groundwater for irrigation is observed to result in diminished crop yields and...
By
John Wesley Powell Center for Analysis and Synthesis
Characterizing global variability in groundwater arsenic

Characterizing global variability in groundwater arsenic

Groundwater contaminated with naturally occurring arsenic is a widespread problem affecting many alluvial and deltaic aquifer systems throughout the world. The human health toll from consuming groundwater with high levels of arsenic is staggering in its proportions. Furthermore, the use of arsenic contaminated groundwater for irrigation is observed to result in diminished crop yields and thus
Learn More
Birdsall-Dreiss Distinguished Lecturer Clifford I. Voss

Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Clifford Voss was selected as the 2015 Birdsall-Dreiss Distinguished Lecturer by the Geological Society of America. Cliff, an internationally recognized expert in groundwater modeling, has over 35 years of project management, implementation, field work and research experience in groundwater systems. Upon request, Cliff will present general-audience lectures on groundwater or ground ice/permafrost.
Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Birdsall-Dreiss Distinguished Lecturer: Clifford I. Voss

Clifford Voss was selected as the 2015 Birdsall-Dreiss Distinguished Lecturer by the Geological Society of America. Cliff, an internationally recognized expert in groundwater modeling, has over 35 years of project management, implementation, field work and research experience in groundwater systems. Upon request, Cliff will present general-audience lectures on groundwater or ground ice/permafrost.
Learn More
Filter Total Items: 78

SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin SUTRA— A code for simulation of saturated-unsaturated, variable-density groundwater flow with solute or energy transport—Documentation of the version 4.0 enhancements—Freeze-thaw capability, saturation and relative-permeability relations, spatially varyin

Version 4.0 of the Saturated-Unsaturated Transport (SUTRA) software code provides the capability to simulate the freezing and thawing of groundwater during energy transport simulations under saturated and unsaturated conditions. In addition to the types of hydrogeologic processes that SUTRA has been able to simulate in the past, this version can be used to study the effects of the freeze...
Authors
Clifford I. Voss, Alden M. Provost, Jeffrey M. McKenzie, Barret L. Kurylyk
By
Water Resources Mission Area

Subsurface porewater flow accelerates talik development under the Alaska Highway, Yukon: A prelude to road collapse and permafrost thaw? Subsurface porewater flow accelerates talik development under the Alaska Highway, Yukon: A prelude to road collapse and permafrost thaw?

The presence of taliks (perennially unfrozen zones in permafrost areas) adversely affects the thermal stability of infrastructure in cold regions, including roads. The role of heat advection on talik development and feedback on permafrost degradation has not been quantified methodically in this context. We incorporate a surface energy balance model into a coupled groundwater flow and...
Authors
Lin Chen, Daniel Fortier, Jeffrey M. McKenzie, Clifford I. Voss, Pierrick Lamontagne-Halle
By
Water Resources Mission Area

Hydrologic modeling of a perennial firn aquifer in southeast Greenland Hydrologic modeling of a perennial firn aquifer in southeast Greenland

A conceptual model, based on field observations and assumed physics of a perennial firn aquifer near Helheim Glacier (southeast Greenland), is evaluated via steady-state 2-D simulation of liquid water flow and energy transport with phase change. The simulation approach allows natural representation of flow and energy advection and conduction that occur in vertical meltwater recharge...
Authors
Olivia Miller, Clifford I. Voss, D. Kip Solomon, Clement Miege, Richard Forster, Nicholas Schmerr, Lynn Montgomery
By
Water Resources Mission Area

Surface energy balance of sub-Arctic roads with varying snow regimes and properties in permafrost regions Surface energy balance of sub-Arctic roads with varying snow regimes and properties in permafrost regions

Surface energy balance (SEB) strongly influences the thermal state of permafrost, cryohydrological processes, and infrastructure stability. Road construction and snow accumulation affect the energy balance of underlying permafrost. Herein, we use an experimental road section of the Alaska Highway to develop a SEB model to quantify the surface energy components and ground surface...
Authors
Lin Chen, Clifford I. Voss, Daniel Fortier, Jeffrey M. McKenzie
By
Water Resources Mission Area

Simulating water and heat transport with freezing and cryosuction in unsaturated soil: Comparing an empirical, semi-empirical and physically-based approach Simulating water and heat transport with freezing and cryosuction in unsaturated soil: Comparing an empirical, semi-empirical and physically-based approach

Freezing of unsaturated soil is an important process that influences runoff and infiltration in cold-climate regions. We used a simple numerical model to simulate water and heat transport with phase change in unsaturated soil via three different approaches: empirical, semi-empirical and physically based. We compared the performance and parameterization of each approach through testing on...
Authors
Joris C Stuurop, Sjoerd E. A. T. M van der Zee, Clifford I. Voss, Helen K French
By
Water Resources Mission Area

The firn meltwater Retention Model Intercomparison Project (RetMIP): Evaluation of nine firn models at four weather station sites on the Greenland ice sheet The firn meltwater Retention Model Intercomparison Project (RetMIP): Evaluation of nine firn models at four weather station sites on the Greenland ice sheet

Perennial snow, or firn, covers 80 % of the Greenland ice sheet and has the capacity to retain surface meltwater, influencing the ice sheet mass balance and contribution to sea-level rise. Multilayer firn models are traditionally used to simulate firn processes and estimate meltwater retention. We present, intercompare and evaluate outputs from nine firn models at four sites that...
Authors
Baptiste Vandecrux, Ruth Mottram, Peter Langen, Robert Fausto, Martin Olesen, C. Max Stevens, Vincent Verjans, Amber Lee, Stefan Ligtenberg, Peter Kuipers Munneke, Sergey S. Marchenko, Ward van Pelt, Colin R. Meyer, Sebastian B. Simonsen, Achim Heilig, Samira Samimi, Shawn J. Marshall, Horst Machguth, Michael J. MacFerrin, Masashi Niwano, Olivia L. Miller, Clifford I. Voss, Jason E. Box
By
Water Resources Mission Area, Utah Water Science Center

SUTRA: A Model for 2D or 3D Saturated-Unsaturated, Variable-Density Ground-Water Flow With Solute or Energy Transport SUTRA: A Model for 2D or 3D Saturated-Unsaturated, Variable-Density Ground-Water Flow With Solute or Energy Transport

SutraSuite is a collection of software for groundwater modeling in both two spatial dimensions (2D) and three spatial dimensions (3D). It includes the SUTRA groundwater model, the SutraGUI pre-processor, the SutraPrep text-based preprocessor, and the SutraPolot post-processor.
By
Water Resources Mission Area

SutraGUI: Graphical Pre- and Post-Processor for SUTRA SutraGUI: Graphical Pre- and Post-Processor for SUTRA

SutraGUI is a graphical environment for setting up and executing 2D and 3D SUTRA runs, and for visualizing results from 2D SUTRA runs. It is compatible with SUTRA Version 2.2 and requires Argus Open Numerical Environments (Argus ONE) commercial software,
By
Water Resources Mission Area
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