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    Michael Unsworth

    Professor Emeritus
    Discipline: Physics of Oceans and Atmospheres

    Research Interests

    Environmental Physics of plants and animals; vegetation-atmosphere interactions; water vapor and carbon dioxide exchange of forest ecosystems; flux estimation in complex topography.

    Current Research

    Carbon-dioxide and water-vapor exchange for forest ecosystems; forest hydrology.



    BS, University of Edinburgh (Honors Physics), 1965
    PhD, University of Edinburgh (Physics), 1968


    Unsworth, M.H., N. Phillips, T. Link, B. Bond, M. Falk, M. Harmon, T. Hinckley, D. Marks, and K.T. Paw U.  2004:  Components and Controls of Water Flux in an Old- growth Douglas-fir-Western Hemlock Ecosystem.  Ecosystems, 7, 468-481.

    Pypker, T.G., Unsworth, M.H. and Bond, B.J.  2006: The role of epiphytes in the interception of rainfall in old-growth Douglas-fir/ western hemlock forests of the Pacific Northwest: Part II - Field measurements at the branch and canopy scale.  Canadian Journal of Forest Research, 36: 819-832.

    Pypker, T.G., Unsworth,M.H., Lamb, B., Allwine, E., Edburg, S., Sulzman, E., Mix, A.C., and Bond, B.J.  2007:  Cold air drainage in a forested valley: investigating the feasibility of monitoring ecosystem metabolism. Agricultural and Forest Meteorology, 145, 149-166.


    Pypker, T.G.,  H R Barnard, M Hauck, E W Sulzman, M H Unsworth, A C Mix, A Kennedy, and B J Bond  2009:  Can carbon isotopes be used to predict watershed scale transpiration?  Water Resources Research, 45, W00D35, doi:10.1029/2008WR007050


    Daly, C., D.R. Conklin, and M.H. Unsworth  2010:  Local atmospheric decoupling in  complex topography alters climate change impacts.  International Journal of  Climatology, 30, 1857-1864, DOI: 10.1002/joc.2007.


    Monteith, J.L and M.H. Unsworth, 2013.  Principles of Environmental Physics,  4th edition.  Elsevier-Academic Press, New York.