Faculty Profile

Current Position

Chair of Computer Science and Professor

Courses

Fall 2019 Teaching:

CSCI 444 Data Visualization: This course emphasizes the practice of data visualization, compelling students to identify and master tools to produce visualizations of data having different types of relations.

Education

1994 University of Minnesota, BS, Phyics

2002 University of Maine, Orono PhD, Physics

2003 University of Maine, Orono MS, Computer Science

Research Interests

Numerical modeling of ice sheet dynamics.

Field of Study

Ice sheet dynamics and numerical modeling. 

Publications

Rogozhina, I., A.G. Petrunin, A.P.N. Vaughan, B. Steinberger, J.V. Johnson, M. Kaban, R. Calov, F. Rickers,M. Thomas, and I. Koulakov (2016), “Melting at the base of the Greenland ice sheet explained by Iceland hotspot history”, Nature Geoscience 9, 366369 doi:10.1038/ngeo2689

O.P. Layeni and J.V. Johnson (2016), “Exact closed-form solutions of some Stefan problems in thermally heterogeneous cylinders” Mechanics Reseach Communications doi:10.1016/j.mechrescom.2015.09.012

Brinkerhoff, D. and Johnson, J.V. (2015), “A stabilized finite element method for calculating balance velocities in ice sheets”, Geosci. Model Dev., 8, 1275-1283, doi:10.5194/gmd-8-1275-2015

Brinkerhoff, D. J., and J. V. Johnson (2015), “Dynamics of thermally induced ice streams simulated with a higher-order flow model”, J. Geophys. Res. Earth Surf., 120, doi:10.1002/2015JF003499.

D.J. Brinkerhoff and J.V. Johnson (2014) Geosci. Model Dev. Discuss., 7, 5183-5195, 2014 www.geosci-model-dev-discuss.net/7/5183/2014/ doi:10.5194/gmdd-7-5183-2014

van der Veen, C.J., L.A. Stearns, J.V. Johnson, B. Csatho (2014) ``Flow Dynamics of Byrd Glacier, East Antarctica'' Journal of Glaciology, vol. 60 (224), doi: 10.3189/2014JoG14J052

Y. Korolev, A. Yagola, D.J. Brinkerhoff, J.V. Johnson (2013) œMethods of error estimation in inverse problems on compact sets in banach lattices theory and applications in ice sheet modeling Inverse Problems, Design and Optimization Symposium, Albi, France, June 26-28 (proceedings volume forthcoming)

Data assimilation and prognostic whole ice sheet modelling with the variationally derived, higher order, open source, and fully parallel ice sheet model VarGlaS (25 Jul 2013) D. J. Brinkerhoff and J.V. Johnson The Cryosphere, 7, 1161-1184, 2013

Bindschadler, R. A., S. Nowicki, A. Abe-Ouchi, A. Aschwanden, H. Choi, J. Fastook, G. Granzow, R. Greve, G. Gutowski, U. Herzfeld, C. Jackson, J.V. Johnson, C. Kroulev, A. Levermann, W. Lipsomb, M. Martin, M. Morlighem, B. Parizek, D. Pollard, S. Price, D. Ren, F. Saito, T Sato, H. Seddik, H. Seroussi, K. Takahashi, R. Walker and W. Wang, (2013) œIce-sheet model sensitivities to environmental forcing and their use in projecting future sea-level (the SeaRISE project). Journal of Glaciology Vol. 59, No.214, doi:10.3189/2013JoG12J125

Nowicki, S., R. Bindschadler, A. Abe-Ouchi, A. Aschwanden, E. Bueler, H. Choi, J. Fastook, G. Granzow, R. Greve, G. Gutowski, U. Herzfeld, C. Jackson, J.V. Johnson, C. Kroulev, E. Larour, A. Levermann, W. Lipsomb, M. Martin, M. Morlighem, B. Parizek, D. Pollard, S. Price, E. Rignot, D. Ren, F. Saito, T Sato, H. Seddik, H. Seroussi, K. Takahashi, R. Walker and W. Wang (2013) œInsights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I. Antarctica Journal of Geophysical Research - Earth Surface doi: 10.1002/jgrf.20081.

Nowicki, S., R. Bindschadler, A. Abe-Ouchi, A. Aschwanden, E. Bueler, H. Choi, J. Fastook, G. Granzow, R. Greve, G. Gutowski, U. Herzfeld, C. Jackson, J.V. Johnson, C. Kroulev, E. Larour, A. Levermann, W. Lipsomb, M. Martin, M. Morlighem, B. Parizek, D. Pollard, S. Price, E. Rignot, D. Ren, F. Saito, T Sato, H. Seddik, H. Seroussi, K. Takahashi, R. Walker and W. Wang. (2013) œInsights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project II. Greenland. Journal of Geophysical Research - Earth Surface doi: 10.1002/jgrf.20076

O.P. Layeni and J.V. Johnson (2012), Some explicit solutions for a class of one-phase Stefan problems AIP Conf. Proc. 1479, 2379, DOI:10.1063/1.4756673

O.P. Layeni, J.V. Johnson, (2012) œHybrids of the heat balance integral method, Applied Mathematics and Computation, Volume 218, Issue 14, Pages 7431-7444, ISSN 0096-3003, 10.1016/j.amc.2012.01.001. (http://www.sciencedirect.com/science/article/pii/S0096300312000069)

S.P. Carter, H.A. Fricker, D.D. Blankenship, J.V. Johnson, W. Lipscomb, S.F. Price, D.A. Young, (2011) œModeling five years of subglacial lake activity in the MacAyeal Ice Stream catchment through assimilation of ICESat laser altimety Journal of Glaciology, vol. 57 (206) pp. 1098-1112

D.J. Brinkerhoff, T.W. Meierbachtol, J.V. Johnson, J.T. Harper, (2011) œSensitivity of the frozen-melted basal boundary to perturbations of basal traction and geothermal heat flux: Isunnguata Sermia, western Greenland, Annals of Glaciology, 52(59) pp. 42-50

R. Calov, R. Greve, A. Abe-Ouchi, E. Bueler, P. Huybrechts, J.V. Johnson, F. Pattyn, D. Pollard, C. Ritz, F. Saito, L. Tarasov (2010) Results from the Ice-Sheet Model Intercomparison Project Heinrich Event INtercOmparison (ISMIP HEINO). Journal of Glaciology vol. 56 (197) pp. 371-383

Honors

2016 Fulbright Scholar to Namibia

Home Department

Computer Science

Area of Expertise

Dynamic Response of Large Ice Masses to Climate Forcing; Use of Mathematical Tools to Move from the Continuous to the Discrete; Optimization; In-Situ, Remote Sensed and Model Generated Data Sets

Chair Director Departments

Computer Science

Teaching Experience

I have taught:

• C++
• A First Couse in FInite Elements
• Data Structures
• Computer Modeling for Science Majors
• Introduction to Computer Science
• Computer Architectures
• Computer Graphics
• Data Visualization
• Programming Languages
• Computer Simulation and Modeling
• Internet of Things
• Statistical, Dynamical, and Computational Models
• Mathematics and physics at the high school level, taught to students whos first language is not English

International Experience

United States Peace Corps volunteer 1994-1996 in Malawi, Central Africa.

University of Montana faculty exchange program in Cape Town, South Africa, 2010 - 2011. I was at Univeristy of Cape Town, and kept a blog.

Fulbright Fellow to Namibia, 2016 calendar year. I kept a blog that can be viewed here.

Hobbies

I like to try and bike, run, ski, hunt, travel to new places, listen to music, camp, cook, and read fiction.