University of Montana
Social Sciences 259B
Missoula, MT 59812
Phone: (406) 243-2883
Computer Science Faculty and Staff
Professor and ChairHome Department: Computer Science
Office: Social Science 417 or Interdisciplinary Science Building 406A
Monday, Wednesday, and Friday I'll be in Social Science 417 from 11:00-12:00
I don't mind drop-ins, I'm generally in Social Science MWF, and in Interdisciplinary Science Building 406A on TTh.
It's usually best to send an email just to make sure I'm in my office. I do have a lot of meetings.
Due to Covid concerns, you may want to schedule an online meeting with me. That works fine, just send an email to arrange it. Also, I prefer MS Teams, as the overhead for starting a meeting is easier.
Chair of Computer Science and Professor
Fall 2020 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.
Numerical modeling of ice sheet dynamics.
Field of Study
Ice sheet dynamics and numerical modeling.
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) ÂœMethods of error estimation in inverse problems on compact sets in banach lattices theory and applications in ice sheet modelingÂ 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) ÂœIce-sheet model sensitivities to environmental forcing and their use in projecting future sea-level (the SeaRISE project).Â 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) ÂœInsights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I. AntarcticaÂ 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) ÂœInsights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project II. Greenland.ÂÂ 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 problemsÂ AIP Conf. Proc. 1479, 2379, DOI:10.1063/1.4756673
O.P. Layeni, J.V. Johnson, (2012) ÂœHybrids of the heat balance integral methodÂ, 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.Â Price, D.A. Young, (2011) ÂœModeling 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) ÂœSensitivity of the frozen-melted basal boundary to perturbations of basal traction and geothermal heat flux: Isunnguata Sermia, western GreenlandÂ, 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
2016 Fulbright Scholar to Namibia
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
I have taught:
- 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
United States Peace Corps volunteer 1994-1996 in Malawi, Central Africa.
Fulbright Fellow to Namibia, 2016 calendar year. I kept a blog that can be viewed here.
I like to try and bike, run, ski, hunt, travel to new places, listen to music, camp, cook, and read fiction.