John Warner, PhD
John Warner is a research oceanographer with the Woods Hole Coastal and Marine Science Center Coastal and Estuarine Dynamics Group in the US Geological Survey. He has worked for the USGS for over 20 years and focuses on coastal ocean processes with an emphasis on sediment transport using field observations and numerical modeling. He is the lead developer of an open-source and community developed Coupled-Ocean-Atmosphere-Wave-Sediment Transport (COAWST) numerical modeling system, which has evolved over two decades to combine publicly developed ocean, wave, atmosphere, and sediment models.
I have been working in the field of numerical modeling for estuarine, coastal, and sediment transport processes for over 25 years. I specialize in the development of coupled modeling systems that allow interaction between individual earth system model components. These advancements have led to greater understanding of physical connections between the ocean, waves, and the atmosphere.
Professional Experience
US Geological Survey, Woods Hole, MA Research Oceanographer 2003-present
US Geological Survey, Woods Hole, MA Postdoctoral Scholar 2001-2003
University of California, Davis, CA Graduate Research Assistant 1996 – 2000
Education and Certifications
Ph.D., Civil & Environmental Engineering, Minor in Numerical Methods, December 2000
University of California, Davis
Dissertation: Barotropic and Baroclinic Convergence Zones in Tidal Channels
Comm
Science and Products
Using a composite grid approach in a complex coastal domain to estimate estuarine residence time
High resolution near-bed observations in winter near Cape Hatteras, North Carolina
Comparing a quasi-3D to a full 3D nearshore circulation model: SHORECIRC and ROMS
High resolution near-bed observations in winter near Cape Hatteras, North Carolina
Processes influencing the transport and fate of contaminated sediments in the coastal ocean– Boston Harbor and Massachusetts Bay
Tidal asymmetry and residual circulation over linear sandbanks and their implication on sediment transport: a process-oriented numerical study
South Carolina Coastal Erosion Study: Data report for observations, October 2003 - April 2004
Wave data processing toolbox manual
Flow convergence caused by a salinity minimum in a tidal channel
Processes influencing the transport and fate of contaminated sediments in the coastal ocean — Boston Harbor and Massachusetts Bay
Building a community sediment transport model
South Carolina coastal erosion study
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Using a composite grid approach in a complex coastal domain to estimate estuarine residence time
We investigate the processes that influence residence time in a partially mixed estuary using a three-dimensional circulation model. The complex geometry of the study region is not optimal for a structured grid model and so we developed a new method of grid connectivity. This involves a novel approach that allows an unlimited number of individual grids to be combined in an efficient manner to prodAuthorsJohn C. Warner, W. Rockwell Geyer, Herman G. ArangoHigh resolution near-bed observations in winter near Cape Hatteras, North Carolina
The U.S. Geological Survey (USGS) Coastal and Marine Science Center in Woods Hole, Massachusetts, is leading an effort to understand the regional sediment dynamics along the coastline of North and South Carolina. As part of the Carolinas Coastal Change Processes Project, a geologic framework study in June of 2008 by the Woods Hole Coastal and Marine Science Center's Sea Floor Mapping Group focusedAuthorsMarinna A. Martini, Brandy N. Armstrong, John C. WarnerComparing a quasi-3D to a full 3D nearshore circulation model: SHORECIRC and ROMS
Predictions of nearshore and surf zone processes are important for determining coastal circulation, impacts of storms, navigation, and recreational safety. Numerical modeling of these systems facilitates advancements in our understanding of coastal changes and can provide predictive capabilities for resource managers. There exists many nearshore coastal circulation models, however they are mostlyAuthorsKevin A. Haas, John C. WarnerHigh resolution near-bed observations in winter near Cape Hatteras, North Carolina
The U.S. Geological Survey (USGS) Coastal and Marine Science Center in Woods Hole, Massachusetts, is leading an effort to understand the regional sediment dynamics along the coastline of North and South Carolina. As part of the Carolinas Coastal Change Processes Project, a geologic framework study in June of 2008 by the Woods Hole Coastal and Marine Science Center's Sea Floor Mapping Group focusedAuthorsM. Martini, B. Armstrong, J.C. WarnerProcesses influencing the transport and fate of contaminated sediments in the coastal ocean– Boston Harbor and Massachusetts Bay
Most of the major urban centers of the United States including Boston, New York, Washington, Chicago, New Orleans, Miami, Los Angeles, San Francisco, and Seattle—are on a coast (fig. 1.1). All of these cities discharge treated sewage effluent into adjacent waters. In 2000, 74 percent of the U.S. population lived within 200 kilometers (km) of the coast. Between 1980 and 2002, the population densityAuthorsP. Soupy Alexander, Sandra M. Baldwin, Dann S. Blackwood, Jonathan Borden, Michael A. Casso, John Crusius, Joanne Goudreau, Linda H. Kalnejais, Paul J. Lamothe, William R. Martin, Marinna A. Martini, Richard R. Rendigs, Frederick L. Sayles, Richard P. Signell, Page C. Valentine, John C. WarnerTidal asymmetry and residual circulation over linear sandbanks and their implication on sediment transport: a process-oriented numerical study
A series of process-oriented numerical simulations is carried out in order to evaluate the relative role of locally generated residual flow and overtides on net sediment transport over linear sandbanks. The idealized bathymetry and forcing are similar to those present in the Norfolk Sandbanks, North Sea. The importance of bottom drag parameterization and bank orientation with respect to the ambienAuthorsRosario Sanay, George Voulgaris, John C. WarnerSouth Carolina Coastal Erosion Study: Data report for observations, October 2003 - April 2004
Oceanographic observations have been made at nine locations in Long Bay, South Carolina from October 2003 through April 2004. These sites are centered around a shore-oblique sand feature that is approximately 10 km long, 2 km wide, and in excess of 3 m thick. The observations were collected through a collaborative effort with the U.S. Geological Survey, the University of South Carolina, and GeorgiAuthorsCharlene M. Sullivan, John C. Warner, Marinna A. Martini, George Voulgaris, Paul Work, Kevin A. Haas, Daniel HanesWave data processing toolbox manual
Researchers routinely deploy oceanographic equipment in estuaries, coastal nearshore environments, and shelf settings. These deployments usually include tripod-mounted instruments to measure a suite of physical parameters such as currents, waves, and pressure. Instruments such as the RD Instruments Acoustic Doppler Current Profiler (ADCP(tm)), the Sontek Argonaut, and the Nortek Aquadopp(tm) ProfiAuthorsCharlene M. Sullivan, John C. Warner, Marinna A. Martini, Frances S. Lightsom, George Voulgaris, Paul WorkFlow convergence caused by a salinity minimum in a tidal channel
Residence times of dissolved substances and sedimentation rates in tidal channels are affected by residual (tidally averaged) circulation patterns. One influence on these circulation patterns is the longitudinal density gradient. In most estuaries the longitudinal density gradient typically maintains a constant direction. However, a junction of tidal channels can create a local reversal (change inAuthorsJohn C. Warner, David H. Schoellhamer, Jon R. Burau, S. Geoffrey SchladowProcesses influencing the transport and fate of contaminated sediments in the coastal ocean — Boston Harbor and Massachusetts Bay
No abstract available.AuthorsP. Soupy Alexander, Dann S. Blackwood, Jonathan Borden, Michael A. Casso, John Crusius, Joanne Goudreau, Linda H. Kalnejais, Paul J. Lamothe, William R. Martin, Marinna A. Martini, Sandra M. Milbert, Richard R. Rendigs, Frederick L. Sayles, Richard P. Signell, Page C. Valentine, John C. WarnerBuilding a community sediment transport model
No abstract available.AuthorsChristopher R. Sherwood, Richard P. Signell, John C. WarnerSouth Carolina coastal erosion study
No abstract available.AuthorsJane F. Denny, Wayne E. Baldwin, William C. Schwab, John C. Warner, M. Richard DeVoe - Web Tools
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