Todd Caldwell

Dr. Todd Caldwell

Associate Research Professor, Hydrology

Division

Hydrologic Sciences

Publications

2017

Caldwell, T. G., Huntington, J. L., Scanlon, B., Joros, A. N., & Howard, T. (2017). Improving Irrigation Water Use Estimates with Remote Sensing Technologies: An Initial Feasibility Study for Texas, 137 p.. University of Texas, Bureau of Economic Geology: Austin, TX, Report prepared for Texas Water Development Board.

2012

Caldwell, T. G., Young, M. H., McDonald, E. V., & Zhu, J. (2012). Soil heterogeneity in Mojave Desert shrublands: Biotic and abiotic processes, v.48, 9551-9563. Water Resources Research

2010

Shafer, D. S., Miller, J. J., Chief, K., Meyer, W. J., Jenkins, S., Tappen, J. J., Young, M. H., Caldwell, T. G., Papelis, C., & Forsee, W. J. (2010). Potential Surface Water Transport of Depleted Uranium (DU) and DU Oxides on the Nevada Test and Training Range

Bacon, S. N., McDonald, E. V., Caldwell, T. G., & Dalldorf, G. (2010). Timing and distribution of alluvial fan sedimentation in response to strengthening of late Holocene ENSO variability in the Sonoran Desert, Southwestern Arizona. USA, Quaternary Research, 73, 425-438

Sabol, D. E., McDonald, E. V., & Caldwell, T. G. (2010). Desert soil in situ monitoring for detection of buried landmines and unexploded ordinance, NGA Final Report, 50pp. National Geospatial-Intelligence Agency

2009

Young, M. H., Caldwell, T. G., Meadows, D. G., & Fenstermaker, L.F. (2009). Variability of soil physical and hydraulic properties at the Mojave Global Change Facility, Nevada: Implications for water budget and evapotranspiration. Journal of Arid Environments, 73(8), 733-744. 10.1016/j.jaridenv.2009.01.015.

Stevenson, B. A., McDonald, E. V., & Caldwell, T. G. (2009). Root patterns for Larrea tridentata in relation to soil morphology in Mojave Desert soils of different ages Webb, R. H., Fenstermaker, L. F., Heaton, J. S., Hughson, D. L., McDonald, E. V., Miller, D. M. (Eds.) Chapter : Root patterns for Larrea tridentata in relation to soil morphology in Mojave Desert soils of different ages. In Webb, R. H., Fenstermaker, L. F., Heaton, J. S., Hughson, D. L., McDonald, E. V., Miller, D. M. (Eds.), The Mojave Desert: Ecosystem Processes and Sustainability, 312-338. University of Nevada Press: Reno, NV

Caldwell, T. G., McDonald, E. V., & Young, M. H. (2009). The seedbed microclimate and active revegetation of disturbed lands in the Mojave Desert. J Arid Environ, 73(4-5), 563-573. https://doi.org/10.1016/j.jaridenv.2008.12.008

2008

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2008). Spatial structure of hydraulic properties from canopy to interspace in the Mojave Desert.. Geophysical Research Letters, 35. https://doi.org/10.1029/2008GL035095

Bacon, S. N., McDonald, E. V., Baker, S. E., Caldwell, T. G., & Stullenbarger, G. (2008). Desert terrain characterization of landforms and surface materials within vehicle test courses at US Army Yuma Proving Ground, USA. Journal of Terramechanics, 45(5), 167-183. https://doi.org/10.1016/j.jterra.2008.09.005
://WOS:000264838500002

Caldwell, T. G., McDonald, E. V., Bacon, S. N., & Stullenbarger, G. (2008). The performance and sustainability of vehicle dust courses for military testing. Journal of Terramechanics, 45, 213-221. 10. 1016/J.JTERRA.2008.10.002

2007

Shafer, D. S., Young, M. H., Zitzer, S. F., Caldwell, T. G., & McDonald, E. V. (2007). Impacts of interrelated biotic and abiotic processes during the past 125,000 years of landscape evolution in the northern Mojave Desert, U.S.A.. Journal of Arid Environments, 69, 633-657

Young, M. H., Caldwell, T. G., Meadows, D. G., Shafer, D. S., Zitzer, S. F., Miller, J. J., McDonald, E. V., Gorehma, J. O., Etyemezian, V. R., & Nikolich, G. (2007). Technical Report: Evaluation of Topical Application of Encapco Emulsion on Desert Soils

Young, M. H., Caldwell, T. G., Miller, J. J., & Dalldorf, G. (2007). Hydraulic Characteristics of Soil Contributing to the Windmill Wash Detention Basin near Bunkerville, Nevada

Shafer, D. S., Young, M. H., Zitzer, S. F., Caldwell, T. G., & McDonald, E. V. (2007). Interrelated pedogenic, hydraulic, biotic and abiotic processes during the past 125,000 years of landscape evolution in the northern Mojave Desert, Nevada, USA. Journal of Arid Environments, 69, 633-657

2006

Shafer, D. S., Young, M. H., Zitzer, S. F., McDonald, E. V., & Caldwell, T. G. (2006). Coupled environmental processes in the Mojave Desert and implications for ET covers as stable landforms Miller, G., Zapata, C., Houston, S., Fredlund, D. (Eds.) Chapter : Coupled environmental processes in the Mojave Desert and implications for ET covers as stable landforms. In Miller, G., Zapata, C., Houston, S., Fredlund, D. (Eds.), Unsaturated Soils 2006, Geotechnical Special Publication 147, 718-729. American Society of Civil Engineers

Caldwell, T. G., McDonald, E. V., & Young, M. H. (2006). Soil disturbance and hydrologic response at the National Training Center, Ft. Irwin, California. J. Arid Environments, 67, 456-472

2005

Johnson, D. W., Murphy, J. F., Susfalk, R. B., Caldwell, T. G., Miller, W. W., Walker, R. F., & Powers, R. F. (2005). The effects of wildfire, salvage logging, and post-fire N-fixation on the nutrient budgets of a Sierran forest. Forest Ecology and Management, 220, 155-165

2004

Johnson, D. W., Susfalk, R. B., Caldwell, T. G., Murphy, J. D., Walker, R. F., & Miller, W. W. (2004). Fire Effects on Carbon and Nitrogen Budgets in Forests. Water, Air, and Soil Pollution, 4(2), 263-275

McDonald, E. V., Caldwell, T. G., Gillies, J. A., Sparks, R., Hamilton, M., & Gilewiche, D. (2004). Field Guidebook, Monday, September 20, 2004: National Training Center, Fort Irwin, CA Lancaster, J., Mouat, D. A., McDonald , E. (Eds.) Chapter : Field Guidebook, Monday, September 20, 2004: National Training Center, Fort Irwin, CA. In Lancaster, J., Mouat, D. A., McDonald , E. (Eds.), Field Guidebook, Desert Surficial Processes and Landscape Dynamics on Military Lands: Scientific Advances, New Challenges, and Technology Transfer, 16-25

Young, M. H., McDonald, E. V., Caldwell, T. G., Benner, S. G., & Meadows, D. G. (2004). Hydraulic properties of a desert soil chronosequence, Mojave Desert, USA. Vadose Zone Journal, 3, 956-963

2002

Gee, G. W., Ward, A. L., Caldwell, T. G., & Ritter, J. C. (2002). Vadose-zone water-flux meter with divergence control. Water Resour. Res., 38(8). 10.1029/2001WR00816

Conference Proceedings

2023

Cobbinah, E., Gearhart, N., Caldwell, T. G., Perez, L. J., Verma, S. C., Pagilla, K., & Parashar, R. (2023). Comparative analysis of the transport behavior of enteric virus’s surrogates in soil columns. AGU Fall Meeting: San Francisco, CA, December 11, 2023-December 15, 2023

2012

Huntington, J. L., Rajagopal, S., Allen, R. G., Mihevc, T. M., Schumer, R., Caldwell, T. G., & deBruin, H. (2012). Energy Balance Comparison and Closure at a Moist Desert Playa: The Importance of Ground Heat Storage and Flux Estimation. American Geophysical Union 2012 Fall Conference: San Francisco, CA.

Chen, L., Young, M. H., Miller, J. J., Dalldorf, G., & Caldwell, T. G. (2012). Using Terrain Forecasting and Field Measurements to Predict Runoff Potential. Water Summit, Milwaukee: Milwaukee, WI

Caldwell, T. G., McDonald, E. V., Bacon, S. N., Young, M. H., & Lin, H. (2012). Hydropedology and ecosystem response on an arid soil chronosequence. 2nd International Conference on Hydropedology, Abstract with Programs: Leipzig, Germany, July 22, 2012-July 27, 2012

2011

Twarakavi, N. C., Chief, K., Berli, M., Caldwell, T. G., Daniels, J. I., & Young, M. H. (2011). Closing the Water Balance for Arid Soils – First Results from a Large Lysimeter Study. American Geophysical Union, Fall Meeting: San Francisco, CA, EOS Abstract No. H53A-1378.

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2011). Soil heterogeneity in arid shrublands: biotic and abiotic controls on soil moisture variability. W2188 USDA Multi-State Research Meeting: Las Vegas, Nevada, U.S.A.

Caldwell, T. G., McDonald, E. V., Bacon, S. N., & Schumer, R. (2011). Cleared circles: Anthropogenic or Biogenic? Use of non-invasive geophysical techniques to determine origin. The Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP), Abstracts with Program, April 10, 2011-April 14, 2011

McDonald, E. V., Bacon, S. N., Schumer, R., Jenkins, S., & Caldwell, T. G. (2011). The question of the origin of cleared circles as cultural resource features: weary humans or energetic rodents?, 80. 9th International Conference on Military Geosciences, Abstracts with Programs: Las Vegas, NV, June 19, 2011-June 24, 2011

2009

Miller, J. J., Dana, G. L., & Caldwell, T. G. (2009). Effectiveness of Erosion-Reduction Techniques used in Watershed Restoration Activities. **** missing ****

Dalldorf, G., Caldwell, T. G., Bacon, S. N., Young, M. H., Miller, J. J., & McDonald, E. V. (2009). Rapid Characterization of Runoff Potential on Arid Alluvial Fans using Terrain Prediction and Geomorphic Mapping. American Association of Geographers Annual Meeting: Las Vegas, NV, March 6, 0009, Session 5603.

Bacon, S. N., McDonald, E. V., Caldwell, T. G., & Dalldorf, G. (2009). Alluvial fan response to strengthening of late Holocene ENSO variability in the Sonoran Desert, southwest Arizona , 41(7), 647. Geological Society of America Annual Meeting

Caldwell, T. G., Sweeney, M., Bacon, S. N., & McDonald, E. V. (2009). Hydraulic gradient and dust emissivity along a playa to distal fan transect , 90(52). AGU Fall Meeting Supplement, Abstract EP24A-05.

2008

Miller, J. J., Caldwell, T. G., Young, M. H., & Dalldorf, G. (2008). Verifying Curve Numbers in Arid Environments by Combining Detailed Geomorphic Mapping and Pedotransfer Functions: Honolulu HI

Zhu, J., Caldwell, T. G., Young, M. H., & McDonald, E. V. (2008). Scaling Under-Canopy and Interspace Soil Hydraulic Properties in Desert Ecosystems. 2008 Symposium: Understanding Near-Surface Environmental Processes: Las Vegas, NV

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2008). Heterogeneity of Soils and Hydraulic Properties from Canopy to Interspace in the Mojave Desert. 2008 Symposium: Understanding Near-Surface Environmental Processes: Las Vegas, NV

Zhu, J., Caldwell, T. G., Young, M. H., & McDonald, E. V. (2008). Implications of Under-Canopy and Interspace Soil Hydraulic Property Distributions in Large Scale Desert Ecosystems. European Geosciences Union 2008 General Assembly: Vienna, Austria

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2008). Gradation of Soil Hydraulic Properties from Canopy to Interspace on a Mojave Desert Soil Chronosequence. European Geosciences Union 2008 General Assembly: Vienna, Austria

Sun, D., Zhu, J., Young, M. H., Caldwell, T. G., & McDonald, E. V. (2008). Effect of Distinct Under-Canopy and Interspace Soil Hydraulic Properties on Large Scale Water Budget. AGU 2008 Fall Meeting: San Francisco, California, U.S.A.

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2008). Hydropedology of Canopy-Interspace Ecosystems in the Mojave Desert: Biotic and Abiotic Processes. 93rd Ecological Society of America Annual Meeting

Young, M. H., Caldwell, T. G., Zhu, J., Fenstermaker, L.F., & McDonald, E. V. (2008). Multi-Scale Variability of Soil and Hydraulic Properties and Impacts to Arid Water Balance. 2008 GSA and ASA-CSSA-SSSA Joint Annual Meeting: Houston, Texas

Sun, D., Zhu, J., Young, M. H., Caldwell, T. G., & McDonald, E. V. (2008). Effect of Distinct Under-Canopy and Interspace soil Hydraulic Properties on Large Scale Water Budget. Am. Geophysical Union National Meetings: San Francisco, CA

Caldwell, T. G., Young, M. H., & McDonald, E. V. (2008). Evolution of arid alluvial soils: Linking texture and structure to the partitioning of water at different spatial scales. 1st International Conference on Hydropedology: Penn State University, PA

Young, M. H., Caldwell, T. G., Miller, J. J., Chen, L., Dalldorf, G., Bacon, S. N., & McDonald, E. V. (2008). Using Terrain Forecasting and Field Measurements to Predict Runoff Potential. Am. Soc. of Flood Plain Managers National Meetings: San Diego, CA

Caldwell, T. G., Young, M. H., Miller, J. J., & Dalldorf, G. (2008). Characterizing Hydraulic Properties in An Arid Watershed to Aid in Flood Control and Uncertainty Analysis. Am. Soc. Agron. National Meetings: Houston, TX

Caldwell, T. G., McDonald, E. V., Young, M. H., Bacon, S. N., & Marion, G. M. (2008). Numerical Simulations of Salt Accumulation in a Hyper-Arid Soil Chronosequence In the Sonoran Desert. Am. Soc. Agron. National Meetings: Houston, TX, Paper 335-9.

Caldwell, T. G., Young, M. H., & McDonald, E. V. (2008). Relating Mass and Energy Fluxes to Arid Soil Development. Am. Soc. Agron. National Meetings: Houston, TX

Chen, L., Young, M. H., Miller, J. J., & Caldwell, T. G. (2008). Rapid Assessment of Watershed Scale Runoff Potential. annual Conference, Floodplain Management Association: San Diego

Berli, M., Caldwell, T. G., McDonald, E. V., & Gilewitch, D. A. (2008). Trafficability of fine-textured arid soils – a model evaluation. ASA-CSSA-SSSA Annual Meeting: Houston, TX

Berli, M., Chen, L., Caldwell, T. G., Chief, K., Miller, J. J., & Young, M. H. (2008). Post-fire effects on watershed hydrology. USACE Arid Regions Demonstration Programs Annual Review Conference: San Diego, CA

Berli, M., Caldwell, T. G., Bacon, S. N., & McDonald, E. V. (2008). Trafficability of fine-textured arid soils â a model evaluation. Geological Society of America Joint Annual Meeting, Abstracts with Programs, Paper No. 58-6.

2007

Caldwell, T. G., Berli, M., & McDonald, E. V. (2007). Trafficability of fine-textured arid soils A model evaluation. Joint North America, Asia-Pacific ISTVS Conference and Japanese Society for Terramechanics: Fairbanks AK

Caldwell, T. G., McDonald, E. V., Young, M. H., Hamerlynck, E. P., & Bacon, S. N. (2007). Soil Development and Hydrology of an Arid Soil Chronosequence in the Sonoran Desert: Los Alamos, NM

McDonald, E. V., Young, M. H., Caldwell, T. G., Benner, S. G., & Meadows, D. G. (2007). Hydraulic Properties of a Desert Soil Chronosequence in the Mojave Desert, USA: Los Alamos, NM

Caldwell, T. G., Young, M. H., & Zhu, J. (2007). Spatial Variability of Soil Hydraulic Properties at Interspace/Canopy Microsites: New Orleans, LA

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2007). Small-Scale Heterogeneity of Soil Hydraulic Properties on Large-Scale Water Balance Simulations. **** missing ****

Caldwell, T. G., Young, M. H., Zhu, J., & McDonald, E. V. (2007). Small-Scale Heterogeneity of Soil Hydraulic Properties on Large-Scale Water Balance Simulations. ASA-CSSA-SSSA 2007 International Annual Meetings: New Orleans, Louisiana

Caldwell, T. G., Young, M. H., & Zhu, J. (2007). Spatial Variability of Soil Hydraulic Properties at Interspace/Canopy Microsites. ASA-CSSA-SSSA 2007 International Annual Meetings: New Orleans, Louisiana

Caldwell, T. G., Young, M. H., Zhu, J., Fenstermaker, L.F., & McDonald, E. V. (2007). Scaling Heterogeneous Soil Hydraulic Properties Using Canopy/Interspace Distributions in a Mojave Desert Ecosystem. AGU 2007 Fall Meeting: San Francisco, California.

Young, M. H., Caldwell, T. G., Miller, J. J., & Dalldorf, G. (2007). Combining Pedotransfer Functions and Detailed Geomorphic Mapping to Characterize Runoff Potential on an Arid Alluvial Fan Complex: San Francisco, CA

Bacon, S. N., McDonald, E. V., Baker, S. E., Caldwell, T. G., & Stullenbarger, G. (2007). Desert terrain characterization of landforms and surface cover within vehicle test courses at U.S. Army Yuma Proving Ground, USA [abstract]. Proceedings of the Joint North American, Asia-Pacific ISTVS Conference and Annual Meeting of Japanese Society for Terramechanics: Fairbanks, AK, June 3, 2007-June 6, 2007, Session 41 Terrain Impacts, talk and short paper.

Bacon, S. N., McDonald, E. V., Dalldorf, G., & Caldwell, T. G. (2007). Late Holocene soil stratigraphy and geochronology of alluvial sedimentation in the Sonoran Desert, Arizona [abstract] , 88(52). AGU Fall Meeting Supplement, Abstract H53C-1390.

Caldwell, T. G., McDonald, E. V., & Bacon, S. N. (2007). Vehicle dust courses and military testing at the U.S. Army’s Yuma Proving Ground. Proceedings of the Joint North American, Asia-Pacific ISTVS Conference and Annual Meeting of Japanese Society for Terramechanics: Fairbanks, AK, June 23, 2007-June 26, 2007, Session 41 Terrain Impacts, poster and short paper.

2006

Shafer, D. S., Etyemezian, V. R., Young, M. H., Caldwell, T. G., Nikolich, G., Meadows, D. G., Karr, L. A., Salmon, J., Jones, W., & Morrill, V. D. (2006). Evaluation of organic-based emulsions for stabilization of dryland soils in the southwestern United States: Beijing, China

Young, M. H., Caldwell, T. G., Meadows, D. G., Etyemezian, V. R., Nikolich, G., Shafer, D. S., McDonald, E. V., Miller, J. J., & Goreham, J. (2006). Hydrologic and Air Quality Impacts of a Soil-Applied, Organic Emulsion: Philadelphia, PA

Young, M. H., McDonald, E. V., Caldwell, T. G., Meadows, D. G., & Shafer, D. S. (2006). Evolution of soil hydraulic properties on arid alluvial fans: Impacts on near-surface water resources: Nanjing, China

Young, M. H., Meadows, D. G., Caldwell, T. G., Shafer, D. S., & McDonald, E. V. (2006). Evolution of soil hydraulic properties on arid alluvial fans: Beijing, China

Young, M. H., Caldwell, T. G., Meadows, D. G., Etyemezian, V. R., Nikolich, G., Shafer, D. S., McDonald, E. V., Miller, J. J., & Goreham, J. (2006). Field and Laboratory Evaluation of a Soil-Applied, Organic Emulsion: Indianapolis, Indiana

Caldwell, T. G., McDonald, E. V., Young, M. H., Hamerlynck, E. P., & Bacon, S. N. (2006). Ecohydrology of an Arid Soil Chronosequence in the Sonoran Desert, Yuma Proving Ground, USA: San Francisco, CA

Caldwell, T. G., McDonald, E. V., Young, M. H., Hamerlynck, E. P., & Bacon, S. N. (2006). Ecohydrology of an arid soil chronosequence in the Sonoran Desert, Yuma Proving Ground, USA , 87(52). AGU Fall Meeting Supplement, Abstract H13A-1355.

2005

Young, M. H., Yu, Z., Tyler, S. W., Drohan, P. J., Verburg, P.S.J., Cooper, C. A., Caldwell, T. G., Decker, D. L., Devitt, D. A., Kreamer, D. K., McDonald, E. V., Nowak, R. S., Papelis, C., Smith, S. D., Sun, H., Ye, M., & Zhu, J. (2005). Scaling environmental processes in heterogeneous arid soils (SEPHAS): A new Nevada NSF EPSCoR initiative: Newark, Delaware

Young, M. H., Meadows, D. G., Caldwell, T. G., Goreham, J., McDonald, E. V., Shafer, D. S., & Miller, J. J. (2005). Hydrologic impacts of a surface-applied, organic emulsion on arid soils: San Francisco, CA

Caldwell, T. G., McDonald, E. V., Young, M. H., & Stevenson, B. A. (2005). Modeling the interdependence of hydropedology and root distributions of {Larrea Tridentata} in the Mojave Desert: San Francisco, CA

2004

Zitzer, S. F., Shafer, D. S., Young, M. H., McDonald, E. V., & Caldwell, T. G. (2004). Changes in diversity and density of northern Mojave plant communities resulting from desert pavement development on a 125,000-year-old chronosequence: Portland, OR

2003

Meadows, D. G., Young, M. H., McDonald, E. V., & Caldwell, T. G. (2003). Hydraulic property determination of vesiculated soil peds in desert pavement environments: San Francisco, CA

Young, M. H., McDonald, E. V., Caldwell, T. G., & Benner, S. G. (2003). Infiltration through desert pavements, Mojave Desert, CA, USA: Denver, CO

Young, M. H., McDonald, E. V., Caldwell, T. G., & Benner, S. G. (2003). Infiltration through desert pavements, Mojave Desert, CA, USA: Nice, France

Caldwell, T. G., Young, M. H., & McDonald, E. V. (2003). Modeling soil moisture in support of revegetation of military lands in arid regions: San Francisco, CA

Shafer, D. S., Young, M. H., Zitzer, S. F., McDonald, E. V., & Caldwell, T. G. (2003). Coupled environmental processes: Implications for landscape development in the northern Mojave desert: San Francisco, CA