Adrian Harpold


Photo of Adrian Harpold

Assistant Professor

Department of Natural Resources and Environmental Science
University of Nevada/Mail Stop 221
1664 N. Virginia Street
Reno,  Nevada   89557

Office: (775) 784-6759
Email: aharpold@cabnr.unr.edu
Building: Max Fleischmann Agriculture,  Office 125
Personal Web: https://naes.unr.edu/harpold/
 
 
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EDUCATION
B.S. Virginia Polytechnic Institute, 2003
M.S. Virginia Polytechnic Institute, 2005
Ph.D. Cornell University, 2010

ACADEMIC & RESEARCH INTEREST

My interests are in quantifying catchment and basin scale water and solute budgets and the linkages between hydrology, hydrochemistry, geomorphology, and ecology in montane forested systems. Moutain ecosystems are the major water source and carbon sink in western North America and subject to ongoing changes in climate and disturbance.  Improved ecohydrological process understanding has the potential to improve local to global-scale water resource management in the 21st century.

My research program utilizes existing observation networks and new field observations to improve the ecohydrological process underpinnings of Earth systems models.  My diverse interests and background has led to investigations of runoff generation mechanisms via hydrological tracers and models, as well as the partitioning of water to its various stores and fluxes.  I am particularly interested in better linking the hydrological sub-disciplines of catchment and snow hydrology to improve our predictions of headwater catchment response to environmental change.

COURSES & TEACHING RESPONSIBILITIES

NRES 295: Principles of Ecohydrology (Fall every year)

NRES 482/682: Small Watershed Hydrology (Spring every year)

 

ACCOMPLISHMENTS

2012 - 2014         INSTAAR, University of Colorado and NCAR                Research Fellow

2010 - 2012         Hydrology and Water Resources Dept., U. of Arizona    Postdoctoral Researcher

AWARDS, HONORS, & PROFESSIONAL RECOGNITION

  • National Science Foundation EAR Postdoctoral Fellowship, 2012 - 2014
  • NSF Graduate Research Fellowship, 2005 - 2009
  • Virginia Conservationist of the Year, Soil and Water Conservation Society (SWCS), 2005
  • Summa cum laude, B.S., 2003

REPRESENTATIVE PUBLICATIONS

Audio/Visual
Global Warming Harpold, A. , Chandra, S. and Houston, D. 2016, Lawyers, Guns & Money - YouTube.com
Curriculum Materials
Exploring the Critical Zone with LiDAR. Harpold, A.A. and T.S. White. 2013, American Geosciences Institute handout for K-12 teachers.
Journals
Twenty-three unsolved problems in hydrology (UPH) – a community perspective. Bloschl, G., and 229 co-authors including A.A. Harpold. 2019, Hydrological Sciences Journal
Partitioning snowmelt and rainfall in the critical zone: effects of climate type and soil properties Hammond, J.C., Harpold, A.A., Weiss, S., and Kampf, S.K. 2019, Hydrology and Earth Systems Sciences
Watershed-scale mapping of fractional snow cover under forest canopy using lidar Kostadinov, T.S. R. Schumer, M. Hausner, K. J. Bormann, R. Gaffney, K. McGwire, T. H. Painter, S. Tyler, and A.A. Harpold 2019, Remote Sensing of Environment
Humidity Determines Snowpack Ablation Under a Warming Climate Harpold, A.A. and P.D. Brooks 2018, Proceedings of the National Academy of Sciences
Event-scale suspended sediment age influenced by hydrologic flux in a mixed-land use Mid-Atlantic Watershed Karwan, D.L., J.E. Pizzuto, R. Aalto, J. Marquard, A. Harpold, K. Skalak, A. Benthaem, D.F. Levia, C.M. Siegert, and A. Aufdenkampe. 2018, Water Resources Research
Watershed-scale mapping of fractional snow cover under conifer forest canopy using lidar Kostadinov, T.S. R. Schumer, M. Hausner, K. J. Bormann, R. Gaffney, K. McGwire, T. H. Painter, S. Tyler, and A.A. Harpold. 2018, Remote Sensing of Environment
A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage Perdrial, J., P. Brooks, T. Swetnam, K.A. Lohse, C. Rasmussen, M. Litvak, A.A. Harpold, X. Zapata-Rios, P. Broxton, B. Mitra, T. Meixner, K. Condon, D. Huckle, C. Stielstra, A.Vazquez-O, , M. Holleran, C. Orem, J. Pelletier, and C. Chorover. 2018, Biogeochemistry
The sensitivity of snow ephemerality to warming climate across an arid to montane vegetation gradient Petersky R,, Shoemaker K.T., Weisberg P.J., Harpold A. 2018, Ecohydrology
Now you see it, now you don't: a case study of ephemeral snowpacks and soil moisture response in the Great Basin, USA Petersky, R. and A.A. Harpold 2018, Hydrology and Earth System Sciences
Potential For Changing Extreme Snowmelt And Rainfall Events in the Mountains of the Western United States Harpold, A.A and M. Kohler 2017, Journal of Geophysical Research: Atmospheres
Defining Snow Drought and Why it Matters Harpold, A.A., M. Dettinger, and S. Rajagopal 2017, EOS, 8
Rain or Snow: Processes, Observations, Prediction, and Research Needs For Hydrologic Sciences. Harpold, A.A., M. Kaplan, Z. Klos, T. Link, J. McNamara, R. Schumer, C. Steele, and S. Rajagopal 2017, Hydrology and Earth System Sciences
Relative humidity has uneven effects on shifts from snow to rain over the western U.S. Harpold, A.A., S. Rajagopal, J. Crews, T. Winchell, and R. Schumer. 2017, Geophysical Research Letters
Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory McIntosh, J. C, Schaumberg, C, Perdrial, J, Harpold, A., Vázquez-Ortega, A. and Rasmussen, C. Vinson, D, Zapata-Rios, X. and Brooks, P. D, Meixner, T., Pelletier, Jon, Derry, L., Chorover, J. 2017, Water Resources Research
Topographically-driven differences in energy and water constrain climatic control on forest carbon sequestration Swetnam, T., Brooks, P., Barnard, H., Harpold, A., Gallo, E. 2017, Ecosphere
Regional sensitivities of seasonal snowpack to elevation, aspect, and vegetation cover in western North America. Tennant, C. J., Harpold, A. A., Lohse, K. A., Godsey, S. E., Crosby, B. T., Larsen, L. G., Brooks, P. D., Van Kirk, R. W. and Glenn, N. F. 2017, Water Resources Research
Growing new generations of critical zone scientists Wymore, A. S., West, N. R., Maher, K., Sullivan, P. L., Harpold, A., Karwan, D., Marshall, J. A., Perdrial, J., Rempe, D. M., and Ma, L. 2017, Earth Surface Processes and Landforms
Snowmelt Rate Dictates Streamflow Barnhart, T. N.P. Molotch, B. Livneh, A.A. Harpold, J. Knowles and D. Schneider. 2016, Geophysical Research Letters. doi: 10.1002/2016GL069690
Riparian zones attenuate nitrogen loss following bark beetle-induced lodgepole pine mortality. Biederman, J. A., Meixner, T., Harpold, A. A., Reed, D. E., Gutmann, E. D., Gaun, J. A., & Brooks, P. D. 2016, Journal of Geophysical Research: Biogeosciences.
Diverging Sensitivity of Soil Water Stress To Changing Snowmelt Timing in the Western U.S. Harpold, A.A. 2016, Advances in Water Resources. 92: 116-129. Doi: 10.1016/j.advwatres.2016.03.017
Can Soil Moisture Information Improve Operational Streamflow Forecasts In Snow-Dominated Watersheds? Harpold, A.A., K. Sutcliffe, J. Clayton, A. Goodbody, and S. Vazquez 2016, Journal of American Water Resources Association
Testing and Improving Temperature Thresholds for Snow and Rain Prediction in the Western United States. Rajagopal, S. and A.A. Harpold 2016, Journal of the American Water Resources Association. DOI: 10.1111/1752-1688.12443
Recent tree die-off has little effect on streamflow in contrast to expected increases from historical studies Biederman, J.A., A. Somor, A.A. Harpold, E. Gutmann, D.D. Breshears, P.A. Troch, D.J. Gochis, R.L. Scott, A.J.H. Meddens, and P.D. Brooks. 2015, Water Resources Research
Quantifying the effects of vegetation structure on snow accumulation and ablation in mixed-conifer forests Broxton P. D., Harpold A. A., Biederman J. A., Troch P. A., Molotch N. P., and Brooks P. D. 2015, Ecohydrology
Laser vision: lidar as a transformative tool to advance critical zone science Harpold, A. A., Marshall, J. A., Lyon, S. W., Barnhart*, T. B., Fisher, B. A., Donovan, M., Brubaker, K. M., Crosby, C. J., Glenn, N. F., Glennie, C. L., Kirchner, P. B., Lam, N., Mankoff, K. D., McCreight, J. L., Molotch, N. P., Musselman, K. N., Pelletier, J., Russo, T., Sangireddy, H., Sjöberg, Y., Swetnam, T., and West, N. 2015, Hydrology and Earth Systems Science
Snowmelt infiltration in mixed-conifer subalpine forests Harpold, A.A, N.P. Molotch, P.D. Brooks, R. Bales, M. Litvak, K. Musselman. And P. Kirchner. 2015, Hydrological Processes
Use of LiDAR in Environmental Science Harpold, A.A. 2015, Oxford Bibliographies in Environmental Science
Sensitivity of soil water availability to changing snowmelt timing in the western U.S. Harpold, A.A. and N.P. Molotch 2015, Geophysical Research Letters
The relative contributions of alpine and subalpine ecosystems to the water balance of a mountainous, headwater catchment. Knowles, J.F., Harpold, A.A., Cowie, R., Zeliff, M., Barnard, H.R., Burns, S.P., Blanken, P.D., Morse, J.F., and Williams, M.W. 2015, Hydrological Processes
Rare Earth Elements as Reactive Tracers of Biogeochemical Weathering in Forested Rhyolitic Terrain. Vázquez-Ortega, A., Perdrial, J., Harpold, A., Zapata-Ríos, X., Rasmussen, C., McIntosh, J., ... & Chorover, J. 2015, Chemical Geology.
Changes in water partitioning and runoff at the hillslope to catchment scale following insect-induced tree mortality in lodgepole pine forests. Biederman, J.A., A.A. Harpold, D. Reed, D. Gochis, B. Ewers, E. Gutmann, and P.D. Brooks. 2014, Water Resources Research
Changes in winter season snowpack accumulation and ablation following the Las Conchas Forest Fire. Harpold, A.A., J. Biederman, K. Condon, M. Merino, Y. Korganokar, T. Nan, L.L. Sloat, M. Ross, and P.D. Brooks. 2014, Ecohydrology. 7: 440-452. doi: 10.1002/eco.1363.
A LiDAR derived snowpack dataset from mixed conifer forests in the Western U.S. Harpold, A.A., Q. Guo, N. Molotch, P. Brooks, R. Bales, J.C. Fernandez-Diaz, K.N. Musselman, T. Swetnam, P. Kirchner, M. Meadows, J. Flannagan, and R. Lucas 2014, Water Resources Research
Stream water carbon controls in seasonally snow-covered mountain catchments: impact of interannual variability of water fluxes, catchment aspect and seasonal processes. Perdrial, J. McIntosh, A.A. Harpold, P.D. Brooks, X. Zapata-Rios, J. Ray, T. Meixner, T. Kanduc, M. Litvak, P. Troch, and J. Chorover. 2014, Biogeochemistry. doi:10.1007/s10533-013-9929-y
Explaining the spatial variability of aquatic biota using watershed features in the Neversink River watershed, New York, USA Harpold, A.A., D.A. Burns, M.T. Walter, and T. Steenhuis 2013, Ecological Applications. 23: 791-800. doi: 10.1890/12-0603.
Explaining the spatial variability of aquatic biota using watershed features in the Neversink River watershed, New York, USA. Harpold, A.A., D.A. Burns, M.T. Walter, and T. Steenhuis 2013, Ecological Applications
Aeresol and Precipitation Chemistry in the Southwestern United States: Spatiotemporal Trends and Interrelationships. Sorooshian, A.S., T.S. Shingler, A.A. Harpold, C.W. Feagles, T.M. Meixner, and P.D. Brooks. 2013, Atmospheric Chemistry and Physics. 13: 7361-7379. doi:10.5194/acp-13-7361-2013
Multi-scale Observations of Snow Accumulation and Peak Snowpack Following Widespread, Insect-induced Lodgepole Pine Mortality Biederman, J., P.D. Brooks, A.A. Harpold, D. Gochis, E. Gutman, D. Reed, E. Pendall, and B. Ewers. 2012, Ecohydrology
Changes in snowpack volume and snowmelt timing in the Intermountain West. Harpold, A.A., P.D. Brooks, S. Rajogopalan, I. Heidebuchel, A. Jardine, and C. Stielstra 2012, Water Resources Research. 48:11. doi: 10.1029/2012WR011949
Probing dissolved organic matter in the critical zone: a comparison between in situ passive capillary wick samplers (PCaps) to aqueous soil extracts Perdrial, J., N. Perdrial, A.A. Harpold, X. Gao, K. LaSharr, J. Chorover 2012, Soil Science Society of America Journal. 76(6): 2019-2030. doi:10.2136/sssaj2012.0061
Probing how water, carbon, and energy driven landscape evolution and surface water dynamics: Jemez River Basin – Santa Catalina Mountains Critical Zone Observatory. Chorover, J., P.A. Troch, C. Rasmussen, P.D. Brooks, J.D. Pelletier, D.D. Breshears, T.E. Huxman, S.A. Kurc, K.A. Lohse, J.C. McIntosh, T. Meixner, M.G. Schaap, M.E. Litvak, J. Perdrial, A.A. Harpold, M. Durcik. 2011, Vadose Zone Journal. 10(3): 884-899. doi:10.2136/vzj2010.0132
Relating hydrogeomorphologic properties to stream buffering chemistry in the Neversink River watershed, New York, USA Harpold, A.A., S.B. Shaw, D.A. Burns, M.T. Walter, and T. Steenhuis. 2010, Hydrological Processes. 24(26): 3759-3771. doi:10.1002/hyp.7802
The hydrological effects of lateral preferential flow paths in a glaciated watershed in the Northeastern U.S. Harpold, A.A., S.W. Lyon, P.A. Troch, and T.S. Steenhuis. 2009, Vadose Zone Journal. 9(2): 397-414. doi:10.2136/vzj2009.0107.
Investigating a high-resolution, stream chloride time series from Biscuit Brook catchment, Catskills, NY. Shaw, S. A.A. Harpold, J.A. Taylor, and M.T. Walter. 2007, Journal of Hydrology. 348(3-4): 245-256. doi:10.1016/j.hydrol.2007.10.009
Newsletters
Where did all that snow go? Compensating vapor losses following forest disturbance in the Rocky Mountains. Harpold, A.A., J.A. Biederman, and P.D. Brooks. 2013, CIRMOUNT Mountain Views. 7(1).