Dr. Adam H. Monahan 

Professor
School of Earth and Ocean Sciences
University of Victoria
PO Box 3065 STN CSC
Victoria BC V8W 3V6 
Canada

Room A433 Bob Wright Centre

Tel: (250) 472 5075
Fax: (250) 472 4030

email: monahana "at" uvic.ca


Member of the University of Victoria Climate Group .

Research Interests

Current Post-Doctoral Fellows and Research Associates

Current Graduate and Honours Students

Former Graduate Students, Honours Students, and Post-Docs

Courses Taught

Publications

    Variability and Predictability of Surface Winds

  1. Mao, Y. and A.H.Monahan: Predictive anisotropy of surface winds by linear statistical downscaling. J. Climate, submitted.
  2. Daines, J.T., A.H.Monahan, and C.L.Curry: Model-based projections and uncertainties of surface wind climate in Western Canada. J. Appl. Meteo. Clim., submitted.
  3. Optis, M. and A.H. Monahan: A comparison of equilibrium and time-evolving approaches to modelling the wind profile up to hub-height under stable stratification. J. Appl. Metor. Clim. , submitted.
  4. Holdsworth, A., T. Rees, and A.H. Monahan: Parameterization sensitivity and instability characteristics of the maximum sustainable heat flux framework for predicting turbulent collapse. J. Atmos. Sci., in press.
    link
  5. Optis, M. and A.H. Monahan: The extrapolation of near-surface wind speeds under stable stratification using an equilibrium-based single-column model approach. J. Appl. Metor. Clim., 55,923-943, 2016.
    link
  6. Monahan, A.H., T. Rees, Y. He, and N. McFarlane: Multiple regimes of wind, stratification, and turbulence in the stable boundary layer. J. Atmos. Sci. , 72, 3178-3198, 2015.
    link
  7. Optis, M., A.H. Monahan, and F. Bosveld: Limitations and breakdown of Monin-Obukhov similarity theory for wind profile extrapolation under stable stratification. Wind Energy , 19, 1053-1072, 2015.
    link
  8. Doerenkaemper, M., M. Optis, A.H. Monahan, and G. Steinfeld: On the offshore advection of boundary-layer structures and its influence on offshore wind conditions. Boundary Layer Meteor. , 155 , 459-482, 2015.
    link
  9. Rees, T. and A.H. Monahan: A general numerical method for analyzing the linear stability of stratified parallel shear flows. , J. Atmos. Oc. Tech. , 31 , 2795-2808, 2014.
    link
  10. Optis, M., A.H. Monahan, and F. Bosveld: Moving beyond Monin-Obukhov similarity theory in modelling wind-speed profiles in the lower atmospheric boundary layer under stable stratification, Boundary Layer Meteor., 2014.
    link
  11. Thompson, W.F., A.H. Monahan, and D. Crommelin: Parametric estimation of the stochastic dynamics of sea surface winds, J. Atmos. Sci. , 71 , 3465-3483, 2014.
    link
  12. Fajber, R., A.H. Monahan, and W.J. Merryfield: At what time of day do daily extreme near surface wind speeds occur?, J. Climate , 27 , 4226-4244, 2014.
    link
  13. Monahan, A.H.: Wind speed probability distribution, Encyclopedia of Natural Resources, 2014.
  14. He, Y., A.H. Monahan, and N.A. McFarlane: Diurnal variations of land surface wind speed probability distributions under clear-sky and low-cloud conditions , Geophys. Res. Lett. , 40 , doi:10.1002/grl.50575, 2013.
    link
  15. Sun, C. and A.H. Monahan: Statistical downscaling prediction of sea surface winds over the global ocean, J. Climate , 26, 7938-7956, 2013.
    link
  16. Culver, A.M.R. and A.H. Monahan: The statistical predictability of surface winds over Western and Central Canada, J. Climate , 26 , 8305-8322, 2013.
    link
  17. Monahan, A.H.: The Gaussian predictability of wind speeds, J. Climate , 26 , 5563-5577, 2013.
    link
  18. Monahan, A.H.: Temporal autocorrelation structure of sea surface winds, J. Climate, 25 , 6684-6700, 2012.
    link
  19. He, Y., N.A. McFarlane, and A.H. Monahan: The influence of boundary layer processes on the diurnal variation of the land surface wind speed probability distribution. J. Climate , 25 , 6441-6458, 2012.
    link
  20. van der Kamp, D., C. Curry, and A.H. Monahan: Statistical downscaling of historical monthly mean winds over a coastal region of complex terrain. II: Predicting wind components. Clim. Dyn., 38 , 1301-1311, 2012.
    link
  21. Curry, C., D. van der Kamp, and A.H. Monahan: Statistical downscaling of historical monthly mean winds over a coastal region of complex terrain. I: Predicting wind speed. Clim. Dyn. , 38 , 1281-1299, 2012.
    link
  22. Monahan, A.H: Can we see the wind? Statistical downscaling of historical sea surface winds in the Subarctic Northeast Pacific. J. Climate , 25 , 1511-1528, 2012.
    link
  23. Monahan, A.H., Y. He, N. McFarlane, and A. Dai: The probability distribution of land surface wind speeds. J. Climate 24, 3892-3909, 2011.
    link
  24. Monahan, A.H.: The probability distribution of sea surface winds: Effects of variable surface stratification and boundary layer thickness. J. Climate , 23 , 5151-5162, 2010.
    link
  25. He, Y., A.H. Monahan, C.G. Jones, A. Dai, D. Caya, S. Biner, and K. Winger: Land surface wind speed probability distributions in North America: Observations and regional climate model evaluations. J. Geophys. Res. , 115 doi:10.1029/2008JD01708, 2010.
    link
  26. Monahan, A.H.: Probability distribution of sea surface wind stresses , Geophys. Res. Lett. , 34 , L05704, 2008. doi:10.1029/2007GL032268.
    link
  27. Monahan, A.H.: Empirical Models of the Probability Distribution of Sea Surface Wind Speeds , J. Climate , 20, 5798-5814, 2007.
    link
  28. Monahan, A.H.: The Probability Distribution of Sea Surface Wind Speeds. Part II: Dataset Intercomparison and Seasonal Variability , J. Climate , 19 , 521-534, 2006.
    link
  29. Monahan, A.H.: The Probability Distribution of Sea Surface Wind Speeds. Part I: Theory and SeaWinds Observations , J. Climate , 19 , 497-520, 2006.
    link
  30. Monahan, A.H.: Stochastic Dynamics of Sea Surface Winds . Proceedings, Workshop on Representation of Sub-Grid Processes Using Stochastic Dynamic Models, ECMWF, 6-8 June 2005.
    PDF file
  31. Monahan, A.H., Low-frequency variability of the statistical moments of sea-surface winds , Geophys. Res. Lett. , 31, doi:10.1029/2004GL019599, 2004.
    link
  32. Monahan, A.H.: A Simple Model for the Skewness of Global Sea-Surface Winds . J. Atmos. Sci., 61 2037-2049, 2004.
    link

    Large-Scale Atmospheric Variability

  33. Tesdal, J.-E., J.R. Christian, A.H. Monahan, and K. von Salzen: Sensitivity of modelled sulfate aerosol and its radiative effect on climate to DMS concentration and air-sea flux . Atmos. Chem. Phys., submitted.
  34. Froyland, G., N. Santitissadeekorn, and A.H. Monahan: Transport in time-dependent dynamical systems: Finite-time coherent sets. Chaos , 20 , 043116, 2010.
    link
  35. Santitissadeekorn, N., G. Froyland, and A. Monahan: Optimally coherent sets in geophysical flows: A new approach to delimiting the stratospheric polar vortex . Phys. Rev. E , 82 , 056311, 2010.
    link
  36. Monahan, A.H. and J.C. Fyfe: How Generic Are Dipolar Jet EOFs? . J. Atmos. Sci. , 66 , 541-551, 2009.
    link
  37. Monahan, A.H. and J.C. Fyfe: On Annular Modes and Zonal Jets , J. Climate , 21, 1963-1978, 2008.
    link
  38. Teng, Q., J.C. Fyfe, and A.H. Monahan: Northern Hemisphere Circulation Regimes: Observed, Simulated, and Predicted , Clim. Dynamics , 28 867-879, 2007.
    link
  39. Monahan, A.H. and J.C. Fyfe, On the Nature of Zonal Jet EOFs , J. Climate , 19, 6409-6424, 2006.
    link
  40. Teng, Q., A.H. Monahan, and J.C. Fyfe: Effects of Time Averaging on Climate Regimes. Geophys. Res. Lett. , 31 , doi:10.1029/2004GL020840, 2004.
    link
  41. Monahan, A.H., J.C. Fyfe, and L. Pandolfo: The vertical structure of wintertime climate regimes of the northern hemisphere extratropical atmosphere , J. Climate , 16 , 2005-2021, 2003.
    link
  42. Monahan, A.H., L. Pandolfo, and J.C. Fyfe: The preferred structure of variability of the Northern Hemisphere atmospheric circulation , Geophys. Res. Lett. , 28 , 1019-1022, 2001.
    link
  43. Monahan, A.H., L. Pandolfo: Meridional localisation of planetary waves in stochastic zonal flows , J. Atmos. Sci. , 58 , 808-820, 2001.
    link
  44. Monahan, A.H., L. Pandolfo, and P. Imkeller: Stochastic Confinement of Rossby Waves by Fluctuating Eastward Flows . Stochastic Climate Models, Birkhauser, 2001.
    abstract
    gzipped postscript file
  45. Imkeller, P., A. H. Monahan, and L. Pandolfo: Some Mathematical Remarks Concerning the Localization of Planetary Waves in a Stochastic Background Flow . Stochastic Climate Models, Birkhauser, 2001.
    abstract
    gzipped postscript file 
  46. Monahan, A.H, J. Fyfe, and G. Flato: A Regime View of Northern Hemisphere Atmospheric Variability and Change under Global Warming, Geophys. Res. Lett. , 27, 1139-1142, 2000.
    link

    Stochastic Dynamics of the Meridional Overturning Circulation

  47. Alexander, J. and A.H. Monahan: Non-normal perturbation growth of pure thermohaline circulation using a 2-D zonally averaged model , J. Phys. Oceanogr., 39 , 369-389, 2009.
    link
  48. Monahan, A.H., J. Alexander, and A.J. Weaver: Stochastic models of the meridional overturning circulation: Timescales and patterns of variability, Phil. Trans. Roy. Soc. A , 366, 2527-2544, 2008.
    link
  49. Monahan, A.H.: Lyapunov exponents of a simple stochastic model of the thermally and wind-driven ocean circulation , Dyn. Atmos. Ocean. , 35 , 363-388, 2002.
    link
  50. Monahan, A.H.: Correlation effects in a simple stochastic model of the thermohaline circulation , Stochastics and Dynamics, 2, 437-462, 2002.
    abstract
    PDF file
  51. Monahan, A.H.: Stabilisation of climate regimes by noise in a simple model of the thermohaline circulation , J. Phys. Oceanogr., 32, 2072-2085, 2002.
    link
  52. Monahan, A.H., Timmermann, A., and Lohmann, G.: Comments on ``Noise-induced transitions in a simplified model of the thermohaline circulation'' J. Phys. Oceanogr. , 32, 1112-1116, 2002.
    link

    Stochastic Modelling in Climate

  53. Thompson, W.F., R.A. Kuske, and A.H. Monahan: Stochastic averaging of dynamical systems with multiple time scales forced with alpha-stable noise. Multiscale Modeling and Simulation , 13, 1194-1223, 2015.
    link
  54. Monahan, A.H. and J. Culina: Stochastic Averaging of Simple Climate Models, J. Climate , 24 , 3068-3088, 2011.
    link
  55. Culina, J., S. Kravtsov, and A.H. Monahan: Stochastic parameterization schemes for use in realistic climate models. J. Atmos. Sci. 68 , 284-299, 2011.
    link
  56. Imkeller, P. and A.H. Monahan: Conceptual stochastic climate models , Stochastics and Dynamics, 2, 311-326, 2002.
    abstract
    PDF file

    Biogeochemical Dynamics in Climate

  57. Engida, Z., D. Ianson, A.Monahan, and R. Thomson: Remore forcing of subsurface currents and temperatures in the Northern California Current System. J. Geophys. Res., submitted.
  58. Mortenson, E., H. Hayashida, N. Steiner, A.H. Monahan, M. Blais, M.A. Gale, V. Galindo, M. Gosselin, X. Hu, D. Lavoie, C.J. Mundy: A model-based analysis of physical and biological controls on ice algae and pelagic primary production in Resolution Passage. Elementa , submitted.
  59. Tesdal, J.-E., J.R. Christian, A.H. Monahan, and K. von Salzen: Evaluation of diverse approaches for estimating DMS concentration and air-sea exchange at global scale. Environ. Chem., 13, 390-412, 2016.
    link
  60. Healey, K., A.H. Monahan, and D. Ianson: Perturbation dynamics of a planktonic ecosystem . J. Mar. Res. , 67 637-666, 2010..
    link
  61. Monahan, A.H. and K. Denman: Impacts of atmospheric variability on a coupled upper-ocean/ecosystem model of the subarctic Northeast Pacific , Global Biogeochemical Cycles, 18 , doi:10.1029/2003GB002100, 2004.
    link

    High-Latitude Climate Variability

  62. Dirkson, A, W.J. Merryfield, and A.H. Monahan: Impacts of sea ice thickness initialization on seasonal Arctic sea ice predictions. J. Climate , submitted.
  63. Dirkson, A., W.J. Merryfield, and A.H. Monahan: Real time estimation of Arctic sea ice thickness through maximum covariance analysis. Geophys. Res. Lett. , 42, 4869-4877, 2015.
    link
  64. Abraham, C., N. Steiner, A.H. Monahan, and C. Michel: Effects of subgrid-scale snow thickness variability on radiative transfer in sea ice. J. Geophys. Res. , 120, 5597-5614, 2015.
    link
  65. Godlovitch, D., A.H. Monahan, and G. Flato. An idealised stochastic model of sea ice thickness dynamics. Cold Reg. Sci. Tech. , in press.
    link
  66. Godlovitch, D., R. Illner, and A.H. Monahan. Smoluchowski coagulation models of sea ice thickness distribution dynamics. J. Geophys. Res. , 116 , 2011.
    link
  67. Merryfield, W.J., M.M. Holland, and A.H. Monahan: Multiple Equilibria and Abrupt Transitions in Arctic Summer Sea Ice Extent. AGU Monograph, "Arctic Sea Ice Decline", pp. 151-174, 2008.
    link
  68. Kuhlbrodt, T. and A.H. Monahan: Stochastic stability of open-ocean deep convection, Journal of Physical Oceanography, 33 , 2764-2780, 2003.
    link

    Low-Latitude Climate Variability

  69. Monahan, A.H. and A. Dai, The spatial and temporal structure of ENSO nonlinearity . J. Climate, 17 3026-3036, 2004.
    link
  70. Monahan, A.H.: Nonlinear principal component analysis: Tropical Indo-Pacific sea surface temperature and sea level pressure, J. Climate , 14 , 219-233, 2001.
    link
  71. Tang, B, Hsieh, W.W., Monahan A.H., and Tangang, F.T. : Skill comparisons between neural networks and canonical correlation analysis in predicting the Equatorial Pacific sea surface temperatures. J. Climate , 13 , 287-293, 2000.
    link
  72. Tangang, F.T., B. Tang, A.H. Monahan, W.W. Hsieh: Forecasting ENSO events: a neural network approach. J. Climate , 11 , 29-41, 1998.
    link

    Multivariate Statistics in Climate Diagnostics

  73. Monahan, A.H.: A note on the McAssey (2013) multivariate goodness-of-fit test. J. Appl. Stat., submitted.
  74. Monahan, A.H., J.C. Fyfe, M.H.P. Ambaum, D. Stephenson, and G.R. North: Empirical orthogonal functions: The medium is the message , J. Climate , 22 , 6501-6514, 2009.
    link
  75. Monahan, A.H. and T. DelSole: Information theoretic measures of dependence, compactness, and non-Gaussianity for multivariate probability distributions, Nonlin. Proc. Geophys., 16 , 57-64, 2009.
    link
  76. Monahan, A.H. and J.C. Fyfe: Comment on "The shortcomings of nonlinear principal component analysis in identifying circulation regimes", J. Climate , 20 , 374-377, 2007.
    link
  77. Monahan, A.H.: Nonlinear principal component analysis of climate data . PhD Thesis, University of British Columbia, 159 pp, 2000.
    abstract
    gzipped postscript file
  78. Monahan, A.H.: Nonlinear principal component analysis by neural networks: Theory and application to the Lorenz system , J. Climate , 13 , 821-835, 2000.
    link
  79. Monahan, A.H., F.T. Tangang, and W.W. Hsieh: A potential problem with extended EOF analysis of standing wave fields. Atmosphere-Ocean , 37 , 241-254, 1999.
    link

    Other topics

  80. Lohmann, G.M., A.H. Monahan, and D. Heinemann: Local short-term variability in solar irradiance. Atmos. Chem. Phys., 16 , 6365-6379, 2016.
    link
  81. Monahan, A.H.: The mathematics of climate modelling. Pi in the Sky, 14, 17-21, 2010.
    link
  82. Monahan, A.H., M. McMillan: Faddeev equations for a relativistic two- and three- body system. Phys. Rev. A , 58 , 4226-4228, 1998.
    link
  83. Monahan, A.H., M. McMillan: Lorentz Boost of the Newton-Wigner-Pryce Position Operator. Phys. Rev. A. , 56 , 2563-2566, 1997.
    link


If there's a problem with any of the above documents, please contact monahana at uvic.ca.
This page was last updated on July 8, 2016.