Trenton Franz

Trenton Franz

  • Contact Information
  • My Story
  • Publications & Presentations
  • Background
  • Interests
  • Grants
  • Advising
  • Courses Taught
  • Outreach

Title Hydrogeophysicist
Address 303 Hardin Hall
3310 Holdrege Street
Lincoln NE
68583-0973
Phone 402-472-8718
FAX 402-472-2946
E-mail tfranz2@unl.edu
Vitae Download file
Contact Preference

tfranz2@unl.edu

n/a

Selected Publications

Franz, T. E., M. Zreda, R. Rosolem, and P. A. Ferre (2013), A universal calibration function for determination of soil moisture with cosmic-ray neutrons, Hydrology and Earth System Sciences, 17, 453-460. doi:10.5194/hess-17-453-2013.
Franz, T. E., M. Zreda, R. Rosolem, B. Hornbuckle, S. Irvin, H. Adams, T. Kolb, C. Zweck, and W. J. Shuttleworth (2013), Ecosystem scale measurements of biomass water using cosmic-ray neutrons, Geophysical Research Letters, 40, 3929-3933. doi:10.1002/grl.50791.
Rosolem, R., W. J. Shuttleworth, M. Zreda, T. E. Franz, X. Zeng, and S. A. Kurc (2013), The Effect of Atmospheric Water Vapor on the Cosmic-ray Soil Moisture Signal, J. Hydrometeorol. doi:10.1175/JHM-D-12-0120.1.
Shuttleworth, W. J., R. Rosolem, M. Zreda, and T. E. Franz (2013), The COsmic-ray Soil Moisture Interaction Code (COSMIC) for use in data assimilation, Hydrology and Earth System Sciences, 17, 3205-3217.
Franz, T. E., K. K. Caylor, E. G. King, J. M. Nordbotten, M. A. Celia, and I. Rodriguez-Iturbe (2012), An ecohydrological approach to predicting hillslope-scale vegetation patterns in dryland ecosystems, Water Resources Research, 48. doi:W01515 10.1029/2011wr010524.
Franz, T. E., M. Zreda, P. A. Ferre, R. Rosolem, C. Zweck, S. Stillman, X. Zeng, and W. J. Shuttleworth (2012), Measurement depth of the cosmic-ray soil moisture probe affected by hydrogen from various sources, Water Resources Research, 48. doi:10.1029/2012WR011871.
Franz, T. E., M. Zreda, R. Rosolem, and P. A. Ferre (2012), Field validation of cosmic-ray soil moisture sensor using a distributed sensor network, Vadose Zone Journal, 11(4). doi:10.2136/vzj2012.0046.
King, E. G., T. E. Franz, and K. K. Caylor (2012), Ecohydrological interactions in a degraded two-phase mosaic dryland: implications for regime shifts, resilience, and restoration Ecohydrology, 5(6), 733–745. doi:10.1002/eco.260.
Miller, G. R., J. M. Cable, A. K. McDonald, B. Bond, T. E. Franz, L. X. Wang, S. Gou, A. P. Tyler, C. B. Zou, and R. L. Scott (2012), Understanding ecohydrological connectivity in savannas: a system dynamics modelling approach, Ecohydrology, 5(2), 200-220. doi:10.1002/eco.245.
Wang, L. X., C. Zou, F. O'Donnell, S. Good, T. E. Franz, G. R. Miller, K. K. Caylor, J. M. Cable, and B. Bond (2012), Characterizing ecohydrological and biogeochemical connectivity across multiple scales: a new conceptual framework, Ecohydrology, 5(2), 221-233. doi:10.1002/eco.187.
Zreda, M., W. J. Shuttleworth, X. Xeng, C. Zweck, D. Desilets, T. E. Franz, and R. Rosolem (2012), COSMOS: The COsmic-ray Soil Moisture Observing System, Hydrology and Earth System Sciences, 16, 4079-4099. doi:10.5194/hess-16-1-2012.
Franz, T. E., E. G. King, K. K. Caylor, and D. A. Robinson (2011), Coupling vegetation organization patterns to soil resource heterogeneity in a central Kenyan dryland using geophysical imagery, Water Resources Research, 47. doi:W07531 10.1029/2010wr010127.
Franz, T. E., J. Nolan, J. M. Nordbotten, K. K. Caylor, and L. D. Slater (2011), Quantifying Lateral Subsurface Transient Soil Moisture Dynamics Using Multi-Point Direct-Current Resistivity in Homogeneous Sand, Vadose Zone Journal, 10(1), 286-298.
Franz, T. E., K. K. Caylor, J. M. Nordbotten, R. I. Rodriguez-Iturbe, and M. A. Celia (2010), An ecohydrological approach to predicting regional woody species distribution patterns in dryland ecosystems, Adv. Water Resour., 33(2), 215-230. doi:10.1016/j.advwatres.2009.12.003.

 

Selected Presentations

Ecosystem Scale Measurements of Water Using Cosmic-ray Neutrons
  • Presentation Type: Oral Presentation
  • Date: 3/29/2013
  • Abstract: The recently developed cosmic-ray method for measuring soil moisture over a horizontal footprint of hectometers and the depth of decimeters is currently being implemented in the COsmic-ray Soil Moisture Observing System (COSMOS). Currently 60 probes are operational in the continental USA with future expansion consisting of a network with 500 probes. The probe measures cosmic-ray neutrons that are generated within air and soil and are moderated mainly by hydrogen atoms in soil water, and emitted to the atmosphere where they form a well-mixed reservoir of neutrons whose density is inversely correlated with soil moisture. Here I will present a general overview of the COSMOS project and cosmic-ray method for measuring soil moisture. In addition I will present some recent work on quantifying other pools of hydrogen inside the probe support volume, most notably biomass, and a summary of mobile measurements used to quantify basin-scale soil moisture patterns. Given the new scale of observations and ability to quantify various pools of hydrogen, this measurement technique is an exciting advance with clear implications in hydrology, ecology, terrestrial hydrometerology, agronomy, and remote sensing. http://www.cuahsi.org/CyberSeminarDetails.aspx?id=56
  • Full Citation:

SNR Mission Area(s)

  • Applied Climate and Spatial Science

Affiliations (index)

Professional Organizations

Notable Websites

Areas of Interest

  • Hydrogeophysics
  • Hydrology
  • Ecohydrology
  • Evapotranspiration
  • Water
  • Geospatial Applications

Currently this page only displays grants that were awarded on 1/1/2009 to the present. If a grant was awarded prior to 1/1/2009 and is still active, it will not be displayed on this page.

Grant Title IUSE: Fostering Undergraduate Students Disciplinary Learning and Water Literacy
Starting Date 8/1/2016
Principal Investigators
Cory Forbes
Co-PIs
Brozovic, Nicholas
Trenton Franz
Ending Date 7/31/2019
Funding Level $299,018.00
Funding Source National Science Foundation

 
Grant Title Long-Term Maize-Based Agro-Ecosystem Core Sites as Part of the AmeriFlux Management Project Network (additional funds)
Starting Date 3/9/2014
Principal Investigators
Andy Suyker
Co-PIs
Timothy Arkebauer
Humberto Blanco
Trenton Franz
Anatoly Gitelson
Ken Hubbard
Adam Liska
Elizabeth (Betty) Walter-Shea
Haishun Yang
Art Zygielbaum
Ending Date 9/30/2016
Funding Level $112,399.00
Funding Source University of California-Berkeley National Lab

 
Grant Title Extension Graduate Assistantship (Smith Lever)
Starting Date 8/24/2015
Principal Investigators
Trenton Franz
Ending Date 7/31/2016
Funding Level $18,000.00
Funding Source Smith Lever Funds

 
Grant Title Can Improving Predictions of Soil Oxygen Dynamics Increase Understanding of Greenhouse Gas Hotspots and Hot Moments
Starting Date 6/1/2015
Principal Investigators
Terry Loecke
Co-PIs
Tonya Bernadt
Amy Burgin
Trenton Franz
Tapan Pathak
Ending Date 5/31/2018
Funding Level $445,429.00
Funding Source National Science Foundation

 
Grant Title Long-Term Maize-Based Agro-Ecosystem Core Sites as Part of the AmeriFlux Management Project Network
Starting Date 3/9/2014
Principal Investigators
Andy Suyker
Co-PIs
Timothy Arkebauer
Humberto Blanco
Trenton Franz
Anatoly Gitelson
Ken Hubbard
Adam Liska
Elizabeth (Betty) Walter-Shea
Haishun Yang
Art Zygielbaum
Ending Date 9/30/2016
Funding Level $112,399.00
Funding Source University of California-Berkeley National Lab

 
Grant Title Advancing the Cosmic-Ray Method
Starting Date 9/5/2014
Principal Investigators
Trenton Franz
Ending Date 9/4/2015
Funding Level $50,000.00
Funding Source Department of Defense - Army - Cold Regions Research and Engineering Laboratory

 

Graduate Program(s)

Master of Science in Natural Resource Sciences


including specializations in
  • Applied Ecology
  • Geographic Information Systems
  • Remote Sensing

Doctor of Philosophy in Natural Resource Sciences


including specializations in
  • Applied Ecology

Courses Taught
Course Number Course Title Fall Even Years Fall Odd Years Spring Even Years Spring Odd Years Summer Session Cross Listing
NRES 453 Hydrology X X NRES 453/853
NRES 498 Special Topics: Hydrology X CIVE/NRES 353/853, NRES 498
NRES 853 Hydrology X X NRES 453/853