Last update: 2007-02-20 17:19:14


Janet P. Hardy

ERDC - CRREL
Cold Regions Research and Engineering Laboratory
72 Lyme Road
Hanover NH 03755-1290
 
Telephone: 603-646-4306
FAX: 603-646-4397


Education:
  • MS, Montana State Universiy, Dept. of Earth Sciences, 1990
  • BA, Colorado College, Geology Department, 1984

  • Professional Positions:
  • Research Physical Scientist (1999-present) ERDC-CRREL, Hanover, NH
  • Physical Scientist (1995-1999) ERDC-CRREL, Hanover, NH
  • Hydrologist (1991-1995) ERDC-CRREL, Hanover, NH
  • Teaching Assistant (1988-1990) Montana State University, Bozeman, MT

  • Research Interests and Activities:
    Snow hydrology with a special interest in the effects of forests on the energy exchanges at the snow surface. Other work examines physical properties of the snowpack effecting air permeability, ventilation, and melt water percolation.

    Distinguished Awards and Memberships:
    Sigma Xi Outstanding M.S. Research Award, 1990 Member of the International Association of Hydrologic Sciences, the American Geophysical Union, the Association of American Avalanche Professionals and the Eastern Snow Conference.

    Selected Publications:
  • Melloh, R., J.P. Hardy, and R.E. Davis (2001). Snow surface albedo in the Northern Hardwood Forest. Hydrological Processes, 15(19).
  • Hardy, J.P., PM Groffman, RD Fitzhugh, KS Henry, TA Welman, JD Demers, TJ Fahey, CT Driscoll, GL Tierney, & S Nolan (2001). Snow depth manipulation and its influence on soil frost and water dynamics in a northern hardwood forest. Biogeochemistry, 56(2) p. 151-174.
  • Groffman PM, Driscoll CT, Fahey TJ, Hardy JP, Fitzhugh RD, & Tierney GL (2001). Colder soils in a warmer world: A snow manipulation study in the northern hardwood forest ecosystem. Biogeochemistry, 56(2) p. 135-150.
  • Tierney GL, Fahey TJ, Groffman PM, Hardy JP, Fitzhugh RD, & Driscoll CD (2001) Soil freezing alters fine root dynamics in a northern hardwood forest. Biogeochemisty, 56(2) p. 175-190.
  • Groffman PM, Driscoll CT, Fahey TJ, Hardy JP, Fitzhugh RD and Tierney GL (2001) Effects of mild winter freezing on soil nitrogen and carbon dynamics in a northern hardwood forest. Biogeochemistry, 56(2) p. 191-213.
  • Fitzhugh RD, Driscoll CT, Groffman PM, Tierney GL, Fahey TJ & JP Hardy (2001) Effects of soil freezing disturbance on soil solution nitrogen, phosphorus, and carbon chemistry in a northern hardwood ecosystem. Biogeochemistry, 56(2) p. 215- 238.
  • Neilson, CB, PM Groffman, SP Hamburg, CT Driscoll, TJ Fahey and JP Hardy (2001). Freezing effects on carbon and nitrogen cycling in northern hardwood forest soils. Soil Science Society of America Journal, 65(6), p. 1723-1730.
  • Hardy, J.P., R. Melloh, P. Robinson, and R. Jordan (2000). Incorporating effects of forest litter in a snow process model. Hydrological Processes, 14(18), p. 3227-3237.
  • Daly, S.F., R. Davis, T. Pangburn, E. Ochs, W. Rosenthal, R. Affleck, T. Baldwin, E. Bryant, J.P. Hardy and S. Taylor (2000). An approach to spatially distributed snow modeling of the Sacramento and San Joaquin basins, California. Hydrological Processes, 14(18), p. 3257-3271.
  • Hardy, J.P., R. Jordan, P. Groffman, S. Nolan, C. Driscoll, and T. Fahey, 1999. Snow depth and soil frost modelling in a northern hardwood forest. 55th Eastern Snow Conference Proceedings, 3-4 June 1999, Fredericton, New Brunswick, p. 211-214.
  • Hardy, J.P., M.R. Albert, and P. Marsh, editors, Snow Hydrology: The Integration of Physical Chemical and Biological Systems. John Wiley and Sons, Ltd., 1999, 373 pp.
  • Jordan, R.E., J.P. Hardy, F.E. Perron, Jr., and D.J. Fisk, 1999. Air permeability and capillary rise as measures of the pore structure of snow: An experimental and theoretical study. Hydrological Processes, 13 (12/13), p. 1733-1754.
  • Groffman, P.M., J.P. Hardy, S. Nolan, C.T. Driscoll and T.J. Fahey, 1999. Snow depth, soil frost and nutrient loss in a northern hardwood forest. Hydrological Processes, 13 (14/15), p. 2275-2286.
  • Hardy, J.P., R.E. Davis, R. Jordan, W. Ni and C. Woodcock, 1998. Snow ablation modelling in a mature aspen stand of the boreal forest. Hydrological Processes, 12 (10/11), p. 1763-1778.
  • Hardy, J.P., R.E. Davis, R. Jordan, X. Li, C. Woodcock, W. Ni and J.C. McKenzie, 1997. Snow ablation modeling at the stand scale in a boreal jack pine forest. , J. of Geophys. Res., 102 (N24), 29,397-29,406, December 26, 1997.
  • Davis, R.E., J. P. Hardy, W. Ni, C. Woodcock, C.J. McKenzie, R. Jordan and X. Li, 1997. Variation of snow cover ablation in the boreal forest: A sensitivity study on the effects of conifer canopy. J. of Geophys. Res., 102 (N24), 29,389-29,396, December 26, 1997.
  • Hardy, J.P. and M.R. Albert, 1995. Snow induced thermal variations around a single conifer tree. Hydrological Processes, v. 9, p. 923-933.
  • Hardy, J.P., R.E. Davis and G.C. Winston, 1995. Evolution of factors affecting gas transmissivity of snow in the Boreal forest. In: Biogeochemistry of Seasonally Snow-Covered Catchments (ed. by K. Tonnessen, M.W. Williams, and M. Tranter) (Proc. Boulder Symp., July 1995). IAHS publication no. 228, p. 51-60.
  • Albert, M.R. and J.P. Hardy, 1995. Ventilation experiments in a seasonal snowcover. In: Biogeochemistry of Seasonally Snow-Covered Catchments (ed. by K. Tonnessen, M.W. Williams, and M. Tranter) (Proc. Boulder Symp., July 1995). IAHS publication no. 228, p. 41-50.
  • Hardy, J.P., 1990. Temporal accumulation and ablation patterns of the seasonal snowpack in forests representing varying stages of regrowth. M.S. Thesis, Montana State University, Bozeman, Montana, 77 pp.

  • Graduate Advisor:
    Kathy Hanson

    Role at the Hubbard Brook:
    I am a team member with Peter Groffman and others on the "Freeze" projects. I help coordinate the winter field experiments, data interpretation, and snow and soil frost modelling using CRREL's SNTHERM and SLTHERM models.

    Title at Hubbard Brook:
    Principal Investigator