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 Continuum Dynamics (CCS-2) group. My interests include high-resolution ocean modeling in which the turbulent eddies are explicitly resolved, ocean modeling for climate, and ocean model development.

Recent Presentations

A Broad-Ranging Formulation of Lateral Mixing ( main pdf, 2.25 MB; references ) LA-UR 07-4052.
- Matthew Hecht, Elizabeth Hunke and Mathew Maltrud
Intrinsic Errors in Physical Ocean Climate Models ( HTML ), LA-UR 07-07-1261
- Matthew Hecht
The Northwest Corner of the Atlantic and Rapid Climate Change ( HTML Slide Presentation, pdf poster (3 MB), and bibliography (small pdf file)), LA-UR 06-7346
- Matthew Hecht (Los Alamos), Frank Bryan (NCAR), Matthew Maltrud (Los Alamos) and Richard Smith
Sensitivity of North Atlantic Circulation to Topography and Sub-Gridscale Parameterization (in pdf, 1 MB), LA-UR 06-1211
- Matthew Hecht (Los Alamos), Frank Bryan (NCAR) and Richard Smith (Los Alamos)
Forward-in-Time Methods in Ocean Modeling (in HTML ), LA-UR 05-2344
- Matthew Hecht
Sensitivity and Resolution Convergence Studies of North Atlantic Model Circulation (in HTML ), LA-UR 05-2342
- Matthew Hecht (Los Alamos), Frank Bryan (NCAR) and Richard Smith (Los Alamos)
The alpha-model of sub-gridscale turbulence in the Parallel Ocean Program (POP) (in HTML ), LA-UR 05-0887
- Matthew Hecht, Beth Wingate and Mark Petersen (Los Alamos) with Darryl Holm (Los Alamos, Imperial College) and Bernard Geurts (Twente University)
Scatterometer Wind Forcing of an Eddy-Resolving North Atlantic Model (in HTML ), LA-UR 04-1095
- Matthew Hecht (Los Alamos), Bill Large (NCAR), Patrice Klein (IFREMER)

Publications:

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))
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, submitted.
3D 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, submitted.
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, in press.
- LA-UR-07-0764 ( preprint at arXiv.org)
- Also see Mark Petersen's related preprint at arXiv.org, and a section on LANS-alpha in our Lateral Mixing paper.
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/
Interannual variability of chlorofluorocarbons, pCFC ages and ideal ages in the North Pacific from 1958-2000 as simulated by an ocean general circulation model, Daisuke Tsumune, Frank O. Bryan, Scott C. Doney and Matthew W. Hecht, Journal of Geophysical Research, in revision.
- LA-UR 05-4890 ( pdf (6.6MB))
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 B296
Los Alamos, NM 87545

mhecht (at) lanl (dot) gov
Phone: (505) 667-5798
Fax: (505) 667-5921