Matthew Hecht's web page

Matthew Hecht

I work within the Climate, Ocean and Sea Ice Modelling program (COSIM) at Los Alamos National Laboratory (LANL), as a member of the Computational Physics and Methods (CCS-2) group. My interests have been in high-resolution ocean modeling in which the turbulent eddies are explicitly resolved, ocean modeling for climate, and ocean model development. More recently, I've been working to improve the modeling of the high latitudes in climate models, as part of the HiLAT project (this work involves sea ice, glacial ice sheets, biogeochemistry and clouds, in addition to ocean processes).

Publications:

Mapping the Energy Cascade in the North Atlantic Ocean: The Coarse-graining Approach, Hussein Aluie, Matthew Hecht, Geoffrey Vallis, J. Phys. Oceanography 48 , (2018).

doi:10.1175/JPO-D-17-0100.1 .
Climate Impact of a Regional Nuclear Weapons Exchange: An Improved Assessment Based on Detailed Source Calculations, J. Reisner, G. D’Angelo, E. Koo, W. Even, M. Hecht, E. Hunke, D. Comeau, R. Bos and J. Cooley, J. of Geophysical Research: Atmospheres 123 , 2752-2772, (2018).
- doi:10.1002/2017JD027331 .
Local Atmospheric Response to an Open-Ocean Polynya in a High-Resolution Climate Model, Wilbert Weijer, Milena Veneziani, Achim Stössel, Matthew Hecht, Nicole Jeffery, Alexandra Jonko, Travis Hodos and Hailong Wang, J. Climate (2016).
- doi:10.1175/JCLI-D-16-0120.1 .
A high Order Characteristic Discontinuous Galerkin Scheme for Advection on Unstructured Meshes, D. Lee, R. Lowrie, M. Petersen, T. Ringler and M. Hecht, J. of Computational Physics 324 , 289-302, (2016).
- doi:10.1175/2011JPO4537.1 .
Evaluation of the arbitrary Langrangian-Eulerian vertical coordinate method in the MPAS-Ocean Model, Mark Petersen, Doug Jacobsen, Todd Ringler, Matthew Hecht and Mathew Maltrud, Ocean Modelling 86 , 93 -- 113, (2015).
- doi:10.1016/j.ocemod.2014.12.004 .
Response of a Strongly Eddying Global Ocean to North Atlantic Freshwater Perturbations, M. Den Toom, H. A. Dijkstra, W. Weijer, M. W. Hecht, M. E. Maltrud and E. van Sebille, J. Phys. Oceanography 44, 464 -- 481 (2014).
- doi:10.1175/JPO-D-12-0155.1 .
A Three-Dimensional Eddy Census of a High-Resolution Global Ocean Simulation, Mark R. Petersen, Sean J. Williams, Mathew E. Maltrud, Matthew W. Hecht and Bernd Hamann, J. Geophys. Res. 118, 1759-1774 (2013).
- doi:10.1002/jgrc.20155
Response of the Atlantic Ocean Circulation to Greenland Ice Sheet Melting in a Strongly-Eddying Ocean Model, W. Weijer, M. E. Maltrud, M. W. Hecht, H. A. Dijkstra and M. A. Kliphuis, Geophys. Res. Lett. 39, (2012).
- doi:10.1029/2012GL051611 .
The Southern Ocean and its climate in CCSM4, Wilbert Weijer, Bernadette M. Sloyan, Mathew Maltrud, Nicole Jeffery, Matthew Hecht, Elizabeth Hunke, Erik van Sebille and Ilana Wainer, J. Climate 25, 2652-2675 (2012).
- doi:10.1175/JCLI-D-11-00302.1 .
Emergence of wind-driven near-inertial waves in the deep ocean triggered by small-scale eddy vorticity structures, Eric Danioux, Patrice Klein, Matthew W. Hecht, Nobumasa Komori, Guillaume Roullet and Sylvie Le Gentil, J. Phys. Oceanography 41, 1297-1307 (2011).
- doi:10.1175/2011JPO4537.1 .
Adaptive Extraction and Quantiﬁcation of Discrete Vortices, S. Williams, J. Ahrens, T. Bremer, B. Hamann , M. Hecht, M. Hlawitschka and M. Petersen, IEEE Transactions on Visualization and Computer Graphics 12, 2088--2095, (2011).
Dynamical evaluation of ocean models using the Gulf Stream as an example, Harley E. Hurlburt et al., in Operational Oceanography in the 21st Century, Andreas Schiller and Gary Brassington (editors), 2011, Springer, doi:10.1007/978-94-007-0332-2_21 .
Cautionary Tales of Persistent Accumulation of Numerical Error: Dispersive Centered Advection, Matthew W. Hecht, Ocean Modelling , (2010).
- LA-UR 08-07798, doi:10.1016/j.ocemod.2010.07.005 .
Three-dimensional reconstruction of ocean mesoscale currents from surface information, Jordi Isern-Fontanet, Guillaume Lapeyre, Patrice Klein, Bertrand Chapron and Matthew W. Hecht, Journal of Geophysical Research 113, (2008).
- LA-UR-08-0119, doi:10.1029/2007JC004692
The LANS-alpha and Leray turbulence parameterizations in primitive equation ocean modeling, M W Hecht, D D Holm, M R Petersen and B A Wingate, Journal of Physics A: Mathematical and General 34, (2008).
- LA-UR-08-0017, doi:10.1088/1751-8113/41/34/344009
Towards a Physical Understanding of the North Atlantic: A Review of Model Studies in an Eddying Regime Matthew W. Hecht and Richard D. Smith, for publication in Ocean Modeling in an Eddying Regime, Geophysical Monograph Series, American Geophysical Union, Hecht and Hasumi Eds. (2008).
- LA-UR 07-4053 ( pdf (5MB))
Lateral Mixing in the Eddying Regime and a New Broad-Ranging Formulation, Matthew W. Hecht, Elizabeth Hunke, Mathew Maltrud, Mark R. Petersen and Beth A. Wingate, for publication in Ocean Modeling in an Eddying Regime, Geophysical Monograph Series, American Geophysical Union, Hecht and Hasumi Eds. (2008).
- LA-UR 07-4052 ( pdf (0.7MB))
Implementation of the LANS-alpha turbulence model in a primitive equation ocean model, Matthew W. Hecht, Darryl D. Holm, Mark R. Petersen and Beth A. Wingate, Journal of Computational Physics 227, 5691--5716, doi:10.1016/j.jcp.2008.02.018 (2008).
- LA-UR-07-0764, doi:10.1016/j.jcp.2008.02.018 .
Efficient form of the LANS-alpha turbulence model in a primitive-equation ocean model}, Mark R. Petersen, Matthew W. Hecht and Beth A. Wingate, Journal of Computational Physics 227, 5717--5735, doi:10.1016/j.jcp.2008.02.017 (2008).
- LA-UR-07-0763, doi:10.1016/j.jcp.2008.02.017 .
On the grid dependence of lateral mixing parameterizations for global ocean simulations, Elizabeth Hunke, Matthew Maltrud and Matthew Hecht Ocean Modelling, 20, 115--133, (2008).
- This article is available at doi:10.1016/j.ocemod.2007.06.010 and through the publisher's web site www.elsevier.com/locate/omodol/
Resolution Convergence and Sensitivity Studies with North Atlantic Circulation Models. Part I: The Western Boundary Current System, Frank O. Bryan, Matthew W. Hecht and Richard D. Smith, Ocean Modelling, 16, 3--4, 141--159, (2007).
- LA-UR 05-3393 ( HTML , pdf (2 MB))
- This is a preprint of an article that has now appeared in the Ocean Modelling, available at doi:10.1016/j.ocemod.2006.08.005 and through the publisher's web site www.elsevier.com/locate/omodol/
Forward-in-Time Upwind-Weighted Methods in Ocean Modeling, Matthew W. Hecht, International Journal for Numerical Methods in Fluids 50, 1159--1173, (2006).
- LA-UR 05-3086 ( pdf (700KB))
- This is a preprint of an article that has now appeared in the International Journal for Numerical Methods in Fluids, available at doi:10.1002/fld.1136 and through the publisher's web site www.interscience.wiley.com
Ocean Chlorofluorocarbon and Heat Uptake During the 20th Century in the CCSM3, Peter R. Gent, Frank O. Bryan, Gokhan Danabasoglu, Keith Lindsay, Daisuke Tsumune, Matthew W. Hecht and Scott C. Doney, J. Climate 19, 2366--2381, (2006).
- LA-UR 05-0888 ( pdf (4MB))
Eddy-Resolving Ocean Modeling, Robert C. Malone, Richard D. Smith, Mathew E. Maltrud and Matthew W. Hecht, Los Alamos Science 28, 223--231, (2003).
- ( pdf (2.2MB))
Antarctic Bottom Water Formation and Deep Water Chlorofluorocarbon Distributions in a Global Ocean Climate Model, Scott C. Doney and Matthew W. Hecht, J. Phys. Oceanography 32, 1642--1666, (2002).
Evaluation of ocean model ventilation with CFC-11: Comparison of 13 global ocean models, Jean-Claude Dutay et al., Ocean Modelling 4, 89--120, (2002).
Properties of Advection Algorithms in the Context of Variational Data Assimilation, Tomislava Vukicevic, Michele Steyskal and Matthew Hecht, Monthly Weather Review, 129, 1221--1231, (2001).
A Better, More Discriminating Test Problem for Ocean Tracer Transport, Matthew W. Hecht, Beth A. Wingate and Patricia Kassis, Ocean Modelling , 2, 1--15 (2000).
Numerical Simulation of the North Atlantic Ocean at 1/10^o, Richard D. Smith, Mathew E. Maltrud, Frank O. Bryan and Matthew W. Hecht, Journal of Physical Oceanography, 30 , 1532--61 (2000).
A Consideration of Four Tracer Advection Schemes in a Primitive Equation Ocean Model, Matthew W. Hecht, Frank O. Bryan and William R. Holland, Journal of Geophysical Research 103, 3,301--21 (1998).
On Simulating Flows with Multiple Time Scales Using a Method of Averages, Balu T. Nadiga, Matthew W. Hecht, Len G. Margolin and Piotr K. Smolarkiewicz, Theoretical and Computational Fluid Dynamics 3/4, 281--92 (1997).
North Atlantic Model Sensitivity to Mediterranean Waters, Matthew W. Hecht, William Holland, Vincenzo Artale and Nadia Pinardi in "Assessing Climate Change: Results from the Model Evaluation Consortium for Climate Assessment", Wendy Howe and Ann Henderson-Sellers (editors) 1997, Gordon & Breach Science Publishers, Sydney.
Upwind-Weighted Advection Schemes for Ocean Tracer Transport: An Evaluation in a Passive Tracer Context, Matthew W. Hecht, William R. Holland and Philip J. Rasch, J. Geophys. Res. 100, 20,763---78 (1995).
Wave Functions and Their Use in Spectroscopy and Phenomenology, Thomas A. DeGrand and Matthew W. Hecht, Nucl. Phys. B30 (Proc. Suppl.), 409 (1993).
Comparison of Lattice Coulomb Gauge Wave Functions in Quenched Approximation and with Dynamical Fermions, M.~W. Hecht, T.~A. DeGrand, K.~M. Bitar et. al., Phys. Rev. D47, 285 (1992).
More About Orbitally Excited Hadrons From Lattice QCD, Thomas A. DeGrand and Matthew W. Hecht, Phys. Rev. D46, 3937 (1992).
Wave Functions of S-Wave Hadrons in the Quenched Approximation to Lattice QCD, Matthew W. Hecht and Thomas A. DeGrand, Phys. Rev. D46, 2155 (1992).
Observation of Orbitally Excited Hadrons in Simulation of Lattice QCD, Thomas A. DeGrand and Matthew W. Hecht, Phys. Lett. B275, 435 (1992).
Radiation Patterns from Vortex-Antivortex Annihilation, Matthew W. Hecht and Thomas A. DeGrand, Phys. Rev. D42, 519 (1990).

Matthew Hecht
Mailstop B214
Los Alamos, NM 87545

mhecht (at) lanl (dot) gov
Phone: (505) 667-5798