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Matthew James Hoffman

Matthew Hoffman

Email
Phone (505) 665-5484

Capabilities

  • Computer and Computational Sciences
  • High performance computing
  • Earth and Space Sciences
  • Geoscience
  • Geophysics
  • Hydrology
  • Geology
  • Remote sensing
  • Climate modeling
  • Field studies and process experiments
  • Climate, Ocean, and Sea Ice Modeling (COSIM) project
  • Model calibration
  • Atmospheric Boundary Layer

Expertise

Ice Dynamics Modeling - Development of ice sheet models; running of ice sheet models for sea level rise predictions using High Performance Computing resources Subglacial Hydrology - Development of subglacial hydrology models coupled to ice sheet models; field observations and analysis of meltwater-induced acceleration of the Greenland Ice Sheet

Earth System Modeling - Coupling of ice sheet models to Earth system models; running and analyzing Earth system models Glacier Surface Energy Balance - Spatially-distributed melt modeling of polar glaciers; collection, maintenance, and analysis of Automated Weather Systems and associated data; glacier surface mass balance measurements Global Positioning System & Geographic Information Systems - Design and deployment of autonomous GPS receivers in polar regions; kinematic differential processing of GPS data for monitoring glacier motion; spatial analysis of glacier and landscape change

Software Development and Management - Maintaining large software projects with many developers and users; version control repository maintenance

Video

Education

  • Ph.D., Environmental Sciences and Resources with emphasis in Geology, Portland State University, 2011
  • M.S., Civil and Environmental Engineering, University of Wisconsin-Madison, 2003
  • B.S., Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 2001
  • B.A., Geography, University of Illinois at Urbana-Champaign, 2001
 

LANL Positions

Scientist 2 7/2014 - present

Postdoctoral Research Associate 8/2011 - 7/2014

 

Professional Societies

American Geophysical Union

International Glaciological Society

 

Publications

In Review

  1. B. de Fleurian, M.A. Werder, S. Beyer, D.J. Brinkerhoff, I. Delaney, C.F. Dow, J. Downs, O. Gagliardini, M.J. Hoffman, R.L. Hooke, J. Seguinot, A.N. Sommers. In review 2018. SHMIP: The Subglacial Hydrology Model Intercomparison Project.  Journal of Glaciology.
  2. Evans, K. J., Kennedy, J. H., Lu, D., Forrester, M. M., Price, S., Fyke, J., Bennett, A. R., Hoffman, M. J., Tezaur, I., Zender, C. S. and Vizcaíno, M. In review 2018. LIVVkit 2.1: Automated and extensible ice sheet model validation. Geosci. Model Dev.
  3. M.J. Hoffman, M. Perego, S. Price, W. Lipscomb, D. Jacobsen, I. Tezaur, A. Salinger, R. Tuminaro, T. Zhang.  In review 2018. MPAS-Albany Land Ice: A variable resolution ice sheet model for Earth system modeling using Voronoi grids. Geosci. Model Dev.

Published

  1. L.C. Andrews, M.J. Hoffman, T.A. Neumann, G. Catania, R.L. Hawley, M.P. Lüthi, B.F. Morriss, C. Ryser, K.M. Schild. 2018. Dynamic evolution of the subglacial hydrologic system inferred from ice-sheet motion in western Greenland.  Journal of Geophysical Research, 123, 1479-1496, https://doi.org/10.1029/ 2017JF004585
  2. M.J. Hoffman, M. Perego, L.C. Andrews, S.F. Price, T.A. Neumann, J. Johnson, G. Catania, M.P. Lüthi. 2018. Widespread moulin formation during supraglacial lake drainages in Greenland. Geophysical Research Letters, 45, 778-788, doi:10.1002/2017GL075659.
  3. Kennedy, J. H., Bennett, A. R., Evans, K. J., Price, S., Hoffman, M., Lipscomb, W. H., Fyke, J., Vargo, L., Boghozian, A., Norman, M. and Worley, P. H. 2017. LIVVkit: An extensible, python-based, land ice verification and validation toolkit for ice sheet models, J. Adv. Model. Earth Syst., 9(2), doi:10.1002/2017MS000916.
  4. S. Price, M.J. Hoffman, J.A. Bonin, I.M. Howat, T. Neumann, J. Saba, I. Tezaur, J. Guerber, D.P. Chambers, K.J. Evans, J.H. Kennedy, J. Lenaerts, W.H. Lipscomb, M. Perego, A.G. Salinger, R.S. Tuminaro, M.R. van den Broeke, S.M.J. Nowicki.  2017An ice sheet model validation framework for the Greenland ice sheet. Geoscientific Model Development, 10, 255-270.
  5. M.J. Hoffman, L.C. Andrews, S. Price, G.A. Catania, T.A. Neumann, M.P. Lüthi, J. Gulley, C. Ryser, R.L. Hawley, B. Morriss.  2016Greenland subglacial drainage evolution regulated by weakly-connected regions of the bed. Nature Communications, 13903, doi:10.1038/ncomms13903.
  6. M.J. Hoffman, A.G. Fountain, G. Liston.  2016.  Distributed modeling of ablation (1996-2011) and climate sensitivity on the glaciers of Taylor Valley, Antarctica. Journal of Glaciology, 62, 215-229.
  7. M.P. Lüthi, C. Ryser, L.C. Andrews, G.A. Catania, M. Funk, R.L. Hawley, M.J. Hoffman, T.A. Neumann. 2015. Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming. The Cryosphere, 9, 245-253, doi:10.5194/tc-9-245-2015.
  8. L.C. Andrews, G.A. Catania, M.J. Hoffman, J.D. Gulley, M. Luethi, C. Ryser, T.A. Neumann, R.L. Hawley. 2014. Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet. Nature, 514, 7520, 80-83, doi:10.1038/nature13796.
  9. C. Ryser, M. Luethi, L. Andrews, G. Catania, M. Funk, R. Hawley, M. Hoffman, T. Neumann. 2014. Caterpillar-like ice motion in the ablation zone of the Greenland Ice Sheet. Journal of Geophysical Research – Earth Surface, 119, doi:10.1002/2013JF003067.
  10. M.J. Hoffman and S. Price.  2014. Feedbacks between subglacial hydrology and glacier dynamics. Journal of Geophysical Research – Earth Surface, 119, doi:10.1002/2013JF002943.
  11. M.J. Hoffman, A.G. Fountain, G. Liston.  2014. Near-Surface Internal Melting - a Substantial Mass Loss on Antarctic Dry Valley Glaciers.  Journal of Glaciology, 60, 361-374
  12. C. Ryser, M. Luethi, L.C. Andrews, M.J. Hoffman, G.A. Catania, R.L. Hawley, T.A. Neumann. 2014. Sustained high sliding motion under the Greenland Ice Sheet revealed by borehole deformation. Journal of Glaciology, 60, 647-660.
  13. T. L. Edwards, X. Fettweis, O. Gagliardini, F. Gillet-Chaulet, H. Goelzer, J. M. Gregory, M. Hoffman, P. Huybrechts, A. J. Payne, M. Perego, S. Price, A. Quiquet, and C. Ritz. 2014. Probabilistic parameterisation of the surface mass balance–elevation feedback in regional climate model simulations of the Greenland ice sheet.  The Cryosphere, 8, 181-194.
  14. T. L. Edwards, X. Fettweis, O. Gagliardini, F. Gillet-Chaulet, H. Goelzer, J. M. Gregory, M. Hoffman, P. Huybrechts, A. J. Payne, M. Perego, S. Price, A. Quiquet, and C. Ritz. 2014. Effect of uncertainty in surface mass balance–elevation feedback on projections of the future sea level contribution of the Greenland ice sheet.  The Cryosphere, 8, 195-208.
  15. A.G. Fountain, H.J. Basagic IV, C. Cannon, M. Devisser, M.J. Hoffman, J.S. Kargel, G.J. Leonard, and K. Thorneykroft. 2014 Glaciers and Perennial Snowfields of the U.S. Cordillera, Chapter 17 in: J.S. Kargel, G.J. Leonard, M.P. Bishop, A. Kaab, and B. Raup (Eds.), Global Land Ice Measurements from Space, Praxis-Springer (Publ.), London.
  16. B.F. Morriss, R.L. Hawley, J.W. Chipman, L.C. Andrews, G.A. Catania, M.J. Hoffman, M.P. Lüthi, T.A. Neumann.  2013. A ten-year record of supraglacial lake evolution and rapid drainage in West Greenland using an automated processing algorithm for multispectral imagery.  The Cryosphere, 7, 1869-1877.
  17. P. Jones, S. Price, W. Lipscomb, M. Hoffman, J. Fyke, M. Maltrud, X. Asay-Davis, D. Martin. 2013. Modeling Sea Level Rise and Ice Sheet Evolution using the Community Ice Sheet Model within the Community Earth System Model. CLIVAR Exchanges, No. 62 (volume 18, Number 2), p. 7-11.
  18. S.R. Shannon, A.J. Payne, I.D. Bartholomew, M.R. van den Broeke, T.L. Edwards, X. Fettweis, O. Gagliardini, F. Gillet-Chaulet, H. Goelzer, M. Hoffman, P. Huybrechts, D. Mair, P. Nienow, M. Perego, S.F. Price, C.J.P.P Smeets, A.J. Sole, R.S.W. van de Wal and T. Zwinger. 2013. Enhanced basal lubrication and the contribution of the Greenland ice sheet to future sea level rise. Proceedings of the National Academy of Sciences, 110 (35), 14156-14161. doi: 10.1073/pnas.1212647110.
  19. M. Tedesco, I.C. Willis, M.J. Hoffman, A.F. Banwell, P. Alexander, and N.S. Arnold. 2013. Ice dynamic response to two modes of surface lake drainage on the Greenland Ice Sheet. Environmental Research Letters, 8, 034007 (9pp).
  20. S. H. Mernild, N. T. Knudsen, M. J. Hoffman, J. C. Yde, E. Hanna, W. H. Lipscomb, J. K. Malmros, and R. S. Fausto. 2013. Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland. Journal of Glaciology, 59, 660-670.
  21. J.D. Carmichael, E.C. Pettit, M. Hoffman, A. Fountain, and B. Hallet. 2012. Seismic multiplet response triggered by melt at Blood Falls, Taylor Glacier, Antarctica, Journal of Geophysical Research-Earth Surface, 117, F03004.
  22. S. H. Mernild, N. T. Knudsen, M. J. Hoffman, J. C. Yde, W. H. Lipscomb, J. K. Malmros, and R. S. Fausto. 2012. Thinning and slowdown of Greenland's Mittivakkat Gletscher. The Cryosphere Discussions, 6, 4387-4415.  (non-peer reviewed)
  23. S. H. Mernild, N. T. Knudsen, J. C. Yde, M. J. Hoffman, W. H. Lipscomb, R. S. Fausto, E. Hanna, and J. K. Malmros. 2012. Recession, thinning, and slowdown of Greenland's Mittivakkat Gletscher. The Cryosphere Discussions, 6, 2005-2036. (non-peer reviewed)
  24. M.J. Hoffman, G. Catania, T.A. Neumann, L. Andrews, J. Rumrill. 2011. Links between acceleration, melting, and supraglacial lake drainage of the western Greenland Ice Sheet. Journal of Geophysical Research-Earth Surface, 116, F04035.
  25. D.J. Sitts, A.G. Fountain, and M.J. Hoffman. 2010. Twentieth century glacier change on Mount Adams, Washington, USA.  Northwest Science, 84, 378-385.
  26. A.G. Fountain, M.J. Hoffman, F. Granshaw, and J. Riedel. 2009. The Benchmark Glacier Concept - does it work? Lessons from the North Cascade Range, USA. Annals of Glaciology, 50, 163-168.
  27. M.J. Hoffman, A.G. Fountain, and G.E. Liston. 2008. Surface energy balance and melt thresholds over 11 years at Taylor Glacier, East Antarctica. Journal of Geophysical Research-Earth Surface.
  28. M.J. Hoffman, A.G. Fountain, J.M. Achuff. 2007. Twentieth-century variations in area of cirque glaciers and glacierets, Rocky Mountain National Park, Rocky Mountains, Colorado, USA. Annals of Glaciology, 46, 349-354.
  29. A.G. Fountain, M. Hoffman, K. Jackson, H. Basagic, T. Nylen, and D. Percy. 2007. Digital Outlines and Topography of the Glaciers of the American West. USGS Open-File Report 2006-1340, 23 p. (non-peer reviewed)
  30. T.W. Soong and M.J. Hoffman. 2002. Effects of Riparian Tree Management on Flood Conveyance Study of Manning's Roughness in Vegetated Floodplains with an Application on the Embarras River in Illinois. Illinois State Water Survey, Champaign, IL, ISWS CR 2002-02, 68 p. (non-peer reviewed)
 
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