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                    U.S. DEPARTMENT OF AGRICULTURE
 Agricultural Water Efficiency and Salinity Research Unit: Riverside, CA
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ARS Home Pacific West Area Riverside, California Agricultural Water Efficiency and Salinity Research Unit People & Locations







Todd H Skaggs
                        Agricultural Water Efficiency and Salinity Research Unit

                        




                        
                        Research Leader
                        Phone: (951) 289-3758
                        
                        
                        Fax: (Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            ProjectsWater Management for Crop Production in Arid and Semi-Arid Regions and the Safe Use of Alternative Water Resources
                                                    In-House Appropriated
                                                                    (D)Accession Number: 441500Artificial Intelligence to Increase Sustainability of Water, Nutrient, Salinity, and Pest Management in the Western US
                                                    Reimbursable Cooperative Agreement
                                                                    (R)Accession Number: 438468Digital and Precision Agriculture for Sustainable Water and Salinity Management in Arid and Semi-Arid Regions
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 440063Genetics x Environment x Management interactions affecting crop salt tolerance and drought resistance
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 445064**Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)NexGen Sequencing, and development of a pipeline as a tool for the detection and discovery of citrus pathogens to facilitate safer germplasm exchange
                                                        

- (Peer Reviewed Journal)Keremane, M.L., Singh, K., Ramadugu, C., Skaggs, T.H., Krueger, R. 2024. NexGen Sequencing, and development of a pipeline as a tool for the detection and discovery of citrus pathogens to facilitate safer germplasm exchange. Plants. https://doi.org/10.3390/plants13030411.Exploring the Arabidopsis RNA-binding proteome and its dynamics under salinity stress

- (Abstract Only)Evaporation and transpiration from multiple proximal forests and wetlands
                                                        

- (Peer Reviewed Journal)Shveyster, V., Stoy, P.C., Butterworth, B., Wiesner, S., Skaggs, T.H., Murphy, B., Wutzler, T., El-Madany, T.S., Desai, A.R. 2024. Evaporation and transpiration from multiple proximal forests and wetlands. Water Resources Research. 60, e2022WR033757. https://doi.org/10.1029/2022WR033757.A system for concurrent on-the-go soil apparent electrical conductivity and gamma-ray sensing in micro-irrigated orchards
                                                        

- (Peer Reviewed Journal)Scudiero, E., Corwin, D.L., Markley, P.T., Pourreza, A., Rounsaville, T., Skaggs, T.H. 2024. A system for concurrent on-the-go soil apparent electrical conductivity and gamma-ray sensing in micro-irrigated orchards. Soil and Tillage Research. 235:105899. https://doi.org/10.1016/j.still.2023.105899.An advanced protocol for profiling RNA-binding proteins in Arabidopsis using plant phase extraction
                                                        

- (Peer Reviewed Journal)Zhang, Y., Xu, Y., Skaggs, T.H., Ferreira, J.F., Chen, X., Sandhu, D. 2023. An advanced protocol for profiling RNA-binding proteins in Arabidopsis using plant phase extraction. Biology Methods and Protocols. 8(1): bpad016. https://doi.org/10.1093/biomethods/bpad016.Early season irrigation detection and evapotranspiration modeling of winter vegetables based on Planet satellite using water and energy balance algorithm in lower Colorado basin
                                                        

- (Peer Reviewed Journal)Dhungel, R., Anderson, R.G., French, A.N., Skaggs, T.H., Saber, M., Sanchez, C., Scudiero, E. 2023. Early season irrigation detection and evapotranspiration modeling of winter vegetables based on Planet satellite using water and energy balance algorithm in lower Colorado basin. Irrigation Science. 42(1):15-27. https://doi.org/10.1007/s00271-023-00874-7.Assessment of crop water use and evaporation changes in a perennial orange orchard following a major thinning operation

- (Abstract Only)Anderson, R.G., Wang, D., Dhungel, R., Ajami, H., Skaggs, T.H. 2023. Assessment of crop water use and evaporation changes in a perennial orange orchard following a major thinning operation. Biological Engineering (ASABE). N/A.Plant phase extraction: A method for enhanced discovery of the RNA-binding proteome and its dynamics in plants
                                                        

- (Peer Reviewed Journal)Zhang, Y., Xu, Y., Skaggs, T.H., Ferreira, J.F., Chen, X., Sandhu, D. 2023. Plant phase extraction: A method for enhanced discovery of the RNA-binding proteome and its dynamics in plants. The Plant Cell. 35(8):2750-2772. https://doi.org/10.1093/plcell/koad124.Modeling of irrigation and related processes with HYDRUS
                                                        

- (Peer Reviewed Journal)Lazarovitch, N., Kisekka, I., Oker, T.E., Brunetti, G., Wöhling, T., Xianyue, L., Yong, L., Skaggs, T.H., Furman, A., Sasidharan, S., Raij-Hoffman, L., Šimunek, J. 2023. Modeling of irrigation and related processes with HYDRUS. Advances in Agronomy. 181: 79-181. https://doi.org/10.1016/bs.agron.2023.05.002.Remote sensing-based energy balance for lettuce in an arid environment: Influence of management scenarios on irrigation and evapotranspiration modeling
                                                        

- (Peer Reviewed Journal)Dhungel, R., Anderson, R.G., French, A.N., Skaggs, T.H., Saber, M., Sanchez, C.A., Scudiero, E. 2023. Remote sensing-based energy balance for lettuce in an arid environment: Influence of management scenarios on irrigation and evapotranspiration modeling. Irrigation Science. 41(2):197-214. https://doi.org/10.1007/s00271-023-00848-9.Impact of climate change and future water availability on soil salinity and almond production in the San Joaquin Valley, California

- (Abstract Only)Anderson, R.G., Helalia, S.A., Skaggs, T.H., Šimunek, J. 2022. Impact of climate change and future water availability on soil salinity and almond production in the San Joaquin Valley, California. Meeting Abstract. N/A.Ensemble HYDRUS-2D modeling to improve apparent electrical conductivity sensing of soil salinity under drip irrigation
                                                        

- (Peer Reviewed Journal)Bughici, T., Skaggs, T.H., Corwin, D.L., Scudiero, E. 2022. Ensemble HYDRUS-2D modeling to improve apparent electrical conductivity sensing of soil salinity under drip irrigation. Agricultural Water Management. 272. Article 107813. https://doi.org/10.1016/j.agwat.2022.107813.Morphological, physiological, biochemical, and transcriptome studies reveal the importance of transporters and stress signaling pathways during salinity stress in Prunus
                                                        

- (Peer Reviewed Journal)Acharya, B.R., Sandhu, D., Dueñas, C., Dueñas, M., Pudussery, M.V., Kaundal, A., Ferreira, J.F., Suarez, D.L., Skaggs, T.H. 2022. Morphological, physiological, biochemical, and transcriptome studies reveal the importance of transporters and stress signaling pathways during salinity stress in Prunus. Scientific Reports. 12. Article 1274. https://doi.org/10.1038/s41598-022-05202-1.Soil water retention curve inflection point: Insight into soil structure from percolation theory
                                                        

- (Peer Reviewed Journal)Ghanbarian, B., Skaggs, T.H. 2021. Soil water retention curve inflection point: Insight into soil structure from percolation theory. Soil Science Society of America Journal. 86(2):338-344. https://doi.org/10.1002/saj2.20360.Impact of drought and changing water sources on water use and soil salinity of almond and pistachio orchards: 2. Modeling
                                                        

- (Peer Reviewed Journal)Helalia, S.A., Anderson, R.G., Skaggs, T.H., Šimunek, J. 2021. Impact of drought and changing water sources on water use and soil salinity of almond and pistachio orchards: 2. Modeling. Soil Systems. 5(4). Article 58. https://doi.org/10.3390/soilsystems5040058.Impact of drought and changing water sources on water use and soil salinity of almond and pistachio orchards: 1. Observations
                                                        

- (Peer Reviewed Journal)Helalia, S.A., Anderson, R.G., Skaggs, T.H., Jenerette, D., Wang, D., Šimunek, J. 2021. Impact of drought and changing water sources on water use and soil salinity of almond and pistachio orchards: 1. Observations. Soil Systems. 5(3). Article 50. https://doi.org/10.3390/soilsystems5030050.Equilibrium Soil Chemistry Submodels

- (Book / Chapter)Suarez, D.L., Skaggs, T.H. 2022. Equilibrium soil chemistry submodels. In: Ahuja, L.R., Keresbaum, K.C. and Wendroth, O. editors. Modeling Processes and Their Interactions in Cropping Systems. Hoboken, NJ: John Wiley & Sons, Inc. 179-201.Critical knowledge gaps and research priorities in global soil salinity
                                                        

- (Peer Reviewed Journal)Hopmans, J.W., Qureshi, A.S., Kisekka, I., Munns, R., Grattan, S.R., Rengasamy, P., Ben-Gal, A., Assouline, S., Jarvaux, M., Minhas, P.S., Raats, P.C., Skaggs, T.H., Wang, G., De Jong Van Lier, Q., Jiao, H., Lavado, R.S., Lazarovitch, N., Li, B., Taleisnik, E. 2021. Critical knowledge gaps and research priorities in global soil salinity. Advances in Agronomy. 169:1-191. https://doi.org/10.1016/bs.agron.2021.03.001.Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain crops
                                                        

- (Peer Reviewed Journal)Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P., Anderson, R.G. 2021. Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain crops. Water Resources Research. 57. Article e2020WR028866. https://doi.org/10.1029/2020WR028866.Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain groups

- (Abstract Only)Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P., Anderson, R.G. 2020. Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain groups. American Geophysical Union. https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/667569.Dynamic management zones for irrigation scheduling
                                                        

- (Peer Reviewed Journal)Fontanet, M., Scudiero, E., Skaggs, T.H., Fernàndez-Garcia, D., Ferrer, F., Rodrigo, G., Bellvert, J. 2020. Dynamic management zones for irrigation scheduling. Agricultural Water Management. 238. https://doi.org/10.1016/j.agwat.2020.106207.Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data

- (Abstract Only)Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P. 2020. Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data. NAPA Conference 2020 Second Biennial Conference. September 25-28, 2020. Absract No. 104. Available: https://www.napaamericas.org/proceedings.php.Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data
                                                        

- (Peer Reviewed Journal)Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P. 2020. Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data. Agricultural and Forest Meteorology. Vol. 285-286. https://doi.org/10.1016/j.agrformet.2020.107907.Correlation-based flux partitioning of water vapor and carbon dioxide fluxes: Method simplification and estimation of canopy water use efficiency
                                                        

- (Peer Reviewed Journal)Scanlon, T.M., Schmidt, D.F., Skaggs, T.H. 2019. Correlation-based flux partitioning of water vapor and carbon dioxide fluxes: Method simplification and estimation of canopy water use efficiency. Agricultural and Forest Meteorology. 279. https://doi.org/10.1016/j.agrformet.2019.107732.Review & syntheses: Turning the challenges of partitioning ecosystem evaporation and transpiration into opportunities
                                                        

- (Peer Reviewed Journal)Stoy, P.C., El-Madany, T.S., Fisher, J.B., Gentine, P., Gerken, T., Good, S.P., Klosterhalfen, A., Liu, S., Miralles, D.G., Perez-Priego, O., Rigden, A.J., Skaggs, T.H., Wohlfahrt, G., Anderson, R.G., Coenders-Gerrits, A.M.J., Jung, M., Maes, W.H., Mammarella, I., Mauder, M., Migliavacca, M., Nelson, J.A., Poyatos, R., Reichstein, M., Scott, R.L., Wolf, S. 2019. Review & syntheses: Turning the challenges of partitioning ecosystem evaporation and transpiration into opportunities. Biogeosciences. 16(19):3747-3775. https://doi.org/10.5194/bg-16-3747-2019.Mapping soil salinity from space: Keeping an eye on degradation of the world’s farmland
                                                        

- (Popular Publication)Scudiero, E., Skaggs, T.H., Corwin, D.L. 2018. Mapping soil salinity from space: Keeping an eye on degradation of the world’s farmland. Science Trends. https://www.doi.org/10.31988/SciTrends.46281.Workflow to establish time-specific zones in precision agriculture by spatiotemporal integration of plant and soil sensing data
                                                        

- (Peer Reviewed Journal)Scudiero, E., Teatini, P., Manoli, G., Braga, F., Skaggs, T.H., Morari, F. 2018. Workflow to establish time-specific zones in precision agriculture by spatiotemporal integration of plant and soil sensing data. Agronomy. 8(11):253. https://doi.org/10.3390/agronomy8110253.Buying water for the environment: A hydro-economic analysis of Salton Sea inflows
                                                        

- (Peer Reviewed Journal)Levers, L.R., Skaggs, T.H., Schwabe, K.A. 2018. Buying water for the environment: A hydro-economic analysis of Salton Sea inflows. Agricultural Water Management. 213:554-567. https://doi.org/10.1016/j.agwat.2018.10.041.Estimating the permeability of naturally structured soil from percolation theory and pore space characteristics imaged by x-ray
                                                        

- (Peer Reviewed Journal)Koestel, J., Dathe, A., Skaggs, T.H., Klakegg, O., Ahmad, M.A., Babko, M., Gimenez, D., Farkas, C., Nemes, A., Jarvis, N. 2018. Estimating the permeability of naturally structured soil from percolation theory and pore space characteristics imaged by x-ray. Water Resources Research. 54(3):9255-9263. https://doi.org/10.1029/2018WR023609.Monitoring and validating spatio-temporal continuously daily evapotranspiration and its components at river the basin scale
                                                        

- (Peer Reviewed Journal)Song, L., Liu, S., Kustas, W.P., Nieto, H., Sun, L., Xu, Z., Skaggs, T.H., Ma, M., Xu, T., Tang, X., Li, Q. 2018. Monitoring and validating spatio-temporal continuously daily evapotranspiration and its components at river the basin scale. Remote Sensing of Environment. https://doi.org/10.1016/j.rse.2018.10.002.Validating the use of MODIS time series for salinity assessment over agricultural soils in California, USA
                                                        

- (Peer Reviewed Journal)Whitney, K., Scudiero, E., El-Askary, H.M., Skaggs, T.H., Allali, M., Corwin, D.L. 2018. Validating the use of MODIS time series for salinity assessment over agricultural soils in California, USA. Ecological Indicators. 93:889-898. https://doi.org/10.1016/j.ecolind.2018.05.069.Fluxpart: Open source software for partitioning carbon dioxide and water vapor fluxes
                                                        

- (Peer Reviewed Journal)Skaggs, T.H., Anderson, R.G., Alfieri, J.G., Scanlon, T.M., Kustas, W.P. 2018. Fluxpart: Open source software for partitioning carbon dioxide and water vapor fluxes. Agricultural and Forest Meteorology. 253:218-224. https://doi.org/10.1016/j.agrformet.2018.02.019.Measurement and partitioning of evapotranspiration for application to vadose zone studies
                                                        

- (Peer Reviewed Journal)Anderson, R.G., Zhang, X., Skaggs, T.H. 2018. Measurement and partitioning of evapotranspiration for application to vadose zone studies. Vadose Zone Journal. 16(13):1-9. doi:10.2136/vzj2017.08.0155.Use of crop-water production models in bio-economic valuations of agricultural and environmental water: the case of the Salton Sea

- (Abstract Only)Flux variance partitioning:  a new approach to advance eddy covariance observations for greenhouse gas emissions

- (Abstract Only)Impact of water use efficiency parameterization on partitioning evapotranspiration with the eddy covariance flux variance method

- (Abstract Only)Evaluating oilseed biofuel production feasibility in California's San Joaquin Valley using geophysical and remote sensing techniques
                                                        

- (Peer Reviewed Journal)Corwin, D.L., Yemoto, K.K., Clary, W., Banuelos, G.S., Skaggs, T.H., Lesch, S.M., Scudiero, E. 2017. Evaluating oilseed biofuel production feasibility in California's San Joaquin Valley using geophysical and remote sensing techniques. Sensors. 17(10):2343. https://doi.org/10.3390/s17102343.Multi-scale soil salinity mapping and monitoring with proximal and remote sensing

- (Abstract Only)Simplified spatiotemporal electromagnetic induction - salinity multi-field calibration

- (Abstract Only)The U.S. Salinity Laboratory (USDA-ARS) guidelines for assessing multi-scale soil salinity with proximal and remote sensing

- (Abstract Only)Upscaling soil saturated hydraulic conductivity from pore throat characteristics

- (Peer Reviewed Journal)Ghanbarian, B., Hunt, A.G., Skaggs, T.H., Jarvis, N. 2017. Upscaling soil saturated hydraulic conductivity from pore throat characteristics. Advances in Water Resources. 104:105-113. doi: 10.1016/j.advwatres.2017.03.016.Simplifying field-scale assessment of spatiotemporal changes of soil salinity

- (Peer Reviewed Journal)Scudiero, E., Skaggs, T.H., Corwin, D.L. 2017. Simplifying field-scale assessment of spatiotemporal changes of soil salinity. Science of the Total Environment. 587:273-281. doi: 10.1016/j.scitotenv.2017.02.136.Remote sensing is a viable tool for mapping soil salinity in agricultural lands

- (Peer Reviewed Journal)Scudiero, E., Corwin, D.L., Anderson, R.G., Yemoto, K.K., Clary, W.A., Wang, Z., Skaggs, T.H. 2017. Remote sensing is a viable tool for mapping soil salinity in agricultural lands. California Agriculture. 1-8. doi: 10.3733/ca.2017a0009.Moving forward on remote sensing of soil salinity at regional scale
                                                        

- (Peer Reviewed Journal)Scudiero, E., Corwin, D.L., Anderson, R.G., Skaggs, T.H. 2016. Moving forward on remote sensing of soil salinity at regional scale. Frontiers in Environmental Science. 4:65. https://doi.org/10.3389/fenvs.2016.00065.Comparative regional-scale soil salinity assessment with near-ground apparent electrical conductivity and remote sensing canopy reflectance

- (Peer Reviewed Journal)Scudiero, E., Skaggs, T.H., Corwin, D.L. 2016. Comparative regional-scale soil salinity assessment with near-ground apparent electrical conductivity and remote sensing canopy reflectance. Ecological Indicators. 70:276-284. doi: 10.1016/j.ecolind.2016.06.015.Quantifying tight-gas sandstone permeability via critical path analysis

- (Peer Reviewed Journal)Ghanbarian, B., Torres-Verdin, C., Skaggs, T.H. 2016. Quantifying tight-gas sandstone permeability via critical path analysis. Advances in Water Resources. 92:316-322. doi: 10.1016/j.advwatres.2016.04.015.Spatial interpolation quality assessments for soil sensor transect datasets
                                                        

- (Peer Reviewed Journal)Scudiero, E., Corwin, D.L., Morari, F., Anderson, R.G., Skaggs, T.H. 2016. Spatial interpolation quality assessments for soil sensor transect datasets. Computers and Electronics in Agriculture. 123:74-79. doi: 10.1016/j.compag.2016.02.016.FLUXPART: An FOSS solution for Eddy covariance flux partitioning

- (Abstract Only)Soil degradation in farmlands of California’s San Joaquin Valley resulting from drought-induced land-use changes

- (Abstract Only)Impact of water use efficiency on eddy covariance flux partitioning using correlation structure analysis

- (Abstract Only)Remote sensing soil salinity map for the San Joaquin Valley, California

- (Abstract Only)Using satellite-based estimates of evapotranspiration and groundwater changes to determine anthropogenic water fluxes in land surface models
                                                        

- (Peer Reviewed Journal)Anderson, R.G., Lo, M., Swenson, S., Famiglietti, J.S., Tang, Q., Skaggs, T.H., Lin, Y., Wu, R. 2015. Using satellite-based estimates of evapotranspiration and groundwater changes to determine anthropogenic water fluxes in land surface models. Geoscientific Model Development. 8:3021-3031. doi: 10.5194/gmd-8-3021-2015.Regional-scale soil salinity assessment using Landsat ETM+ canopy reflectance

- (Peer Reviewed Journal)Scudiero, E., Skaggs, T.H., Corwin, D.L. 2015. Regional-scale soil salinity assessment using Landsat ETM+ canopy reflectance. Remote Sensing of Environment. 169(C):335-343. doi: 10.1016/j.rse.2015.08.026.Reproducible research in vadose zone sciences

- (Peer Reviewed Journal)Skaggs, T.H., Young, M.H., Vrugt, J.A. 2015. Reproducible research in vadose zone sciences. Vadose Zone Journal. doi: 10.2136/vz2015.06.0088.Open software tools for eddy covariance flux partitioning

- (Abstract Only)A soil moisture accounting-procedure with a Richards' equation-based soil texture-dependent parameterization

- (Peer Reviewed Journal)Mathias, S.A., Skaggs, T.H., Quinn, S.A., Egan, S.N., Finch, L.E., Oldham, C.D. 2015. A soil moisture accounting-procedure with a Richards' equation-based soil texture-dependent parameterization. Water Resources Research. 51:506-523.Analytical steady-state solutions for water-limited cropping systems using saline irrigation water

- (Peer Reviewed Journal)Skaggs, T.H., Anderson, R.G., Corwin, D.L., Suarez, D.L. 2014. Analytical steady-state solutions for water-limited cropping systems using saline irrigation water. Water Resources Research. 50(12):9656–9674. doi: 10.1002/2014WR016058.Regional scale soil salinity evaluation using Landsat 7, western San Joaquin Valley, California, USA

- (Peer Reviewed Journal)Scudiero, E., Skaggs, T.H., Corwin, D.L. 2014. Regional scale soil salinity evaluation using Landsat 7, western San Joaquin Valley, California, USA. Geoderma Regional. 2:82-90. doi: 10.1016/j.geodrs.2014.10.004.New steady-state models for water-limited cropping systems using saline irrigation waters: Analytical solutions and applications

- (Abstract Only)New steady-state models for water-limited cropping systems using saline irrigation waters: Analytical solutions and applications

- (Abstract Only)Spatio-temporal analysis of multi-year Landsat 7 data for regional scale soil salinity assessment

- (Abstract Only)The use of numerical flow and transport models in environmental analyses

- (Book / Chapter)van Genuchten, M.Th., Naveira-Cotta, C., Skaggs, T.H., Raoof, A., Pontedeiro, E.M. 2014. The use of numerical flow and transport models in environmental analyses. In:Teixeira, W.G., et al., editors. Application of soil physics in environmental analyses: Measuring, modelling and data integration, progress in soil science. Switzerland:Springer International. p. 349-376.Global sensitivity analysis for UNSATCHEM simulations of crop production with degraded waters
                                                        

- (Peer Reviewed Journal)Skaggs, T.H., Suarez, D.L., Corwin, D.L. 2014. Global sensitivity analysis for UNSATCHEM simulations of crop production with degraded waters. Vadose Zone Journal. DOI: 10.2136/vzj2013.09.0171.Exact analytical solutions for contaminant transport in rivers 1. The equilibrium advection-dispersion equation

- (Peer Reviewed Journal)Van Genuchten, M.T., Leij, F.J., Skaggs, T.H., Toride, N., Bradford, S.A., Pontedeiro, E.M. 2013. Exact analytical solutions for contaminant transport in rivers 1. The equilibrium advection-dispersion equation. Journal of Hydrology and Hydromechanics. 61(2):146-160.Exact analytical solutions for contaminant transport in rivers 2. Transient storage and decay chain solutions

- (Peer Reviewed Journal)Van Genuchten, M.T., Leij, F.J., Skaggs, T.H., Toride, N., Bradford, S.A., Pontedeiro, E.M. 2013. Exact analytical solutions for contaminant transport in rivers 2. Transient storage and decay chain solutions. Journal of Hydrology and Hydromechanics. 61(3):250-259.Analytical solutions of the one-dimensional advection-dispersion solute transport equation subject to time-dependent boundary conditions

- (Peer Reviewed Journal)Perez-Guerrero, J.S., Pontedeiro, E.M., Van Genuchten, M.T., Skaggs, T.H. 2013. Analytical solutions of the one-dimensional advection-dispersion solute transport equation subject to time-dependent boundary conditions. Chemical Engineering Journal. 221:487-491.Solute transport in a loamy soil under subsurface porous clay pipe irrigation

- (Peer Reviewed Journal)Siyal, A.A., Van Genuchten, M.T., Skaggs, T.H. 2013. Solute transport in a loamy soil under subsurface porous clay pipe irrigation. Agricultural Water Management. 121(2013):73-80.Effects of soil hydraulic and transport parameter uncertainty on predictions of solute transport in large lysimeters

- (Peer Reviewed Journal)Skaggs, T.H., Suarez, D.L., Goldberg, S.R. 2013. Effects of soil hydraulic and transport parameter uncertainty on predictions of solute transport in large lysimeters. Vadose Zone Journal. doi:10.2136/vzj2012.0143.Effects of soil moisture on the diurnal pattern of pesticide emission: Numerical simulation and sensitivity analysis

- (Peer Reviewed Journal)Reichman, R., Yates, S.R., Skaggs, T.H., Rolston, D.E. 2013. Effects of soil moisture on the diurnal pattern of pesticide emission: Numerical simulation and sensitivity analysis. Atmospheric Environment. 66(2013):41-51.Analytical solution for the advection-dispersion transport equation in layered media

- (Peer Reviewed Journal)Perez Guerrero, J.S., Pimentel, L.C., Skaggs, T.H. 2012. Analytical solution for the advection-dispersion transport equation in layered media. International Journal of Heat and Mass Transfer. 56:274-282.Effects of soil moisture on the diurnal pattern of pesticide emission: Comparison of simulations with field measurements

- (Peer Reviewed Journal)Reichman, R., Yates, S.R., Skaggs, T.H., Rolston, D.E. 2013. Effects of soil moisture on the diurnal pattern of pesticide emission: Comparison of simulations with field measurements. Atmospheric Environment. 66(2013):52-62.Replicated lysimeter measurements of tracer transport in clayey soils:  Effects of irrigation water salinity

- (Peer Reviewed Journal)Skaggs, T.H., Suarez, D.L., Goldberg, S.R., Shouse, P.J. 2012. Replicated lysimeter measurements of tracer transport in clayey soils:  Effects of irrigation water salinity. Agricultural Water Management. 110:84-93.Assessment of critical path analyses of the relationship between permeability and electrical conductivity of pore networks

- (Peer Reviewed Journal)Skaggs, T.H. 2011. Assessment of critical path analyses of the relationship between permeability and electrical conductivity of pore networks. Advances in Water Resources. 34:1335-1342.Diurnal variation of diazinon volatilization:  Soil moisture effects

- (Peer Reviewed Journal)Reichman, R., Rolston, D.E., Yates, S.R., Skaggs, T.H. 2011. Diurnal variation of diazinon volatilization:  Soil moisture effects. Environmental Science and Technology. 45(6):2144-2149.Analytical solution for one-dimensional advection-dispersion transport equation with distance-dependent coefficients

- (Peer Reviewed Journal)Perez Guerrero, J.S., Skaggs, T.H. 2010. Analytical solution for one-dimensional advection-dispersion transport equation with distance-dependent coefficients. Journal of Hydrology. 390(1-2)57:65.Drip irrigation water distribution patterns: Effects of emitter rate, pulsing, and antecedent water

- (Peer Reviewed Journal)Skaggs, T.H., Trout, T.J., Rothfuss, Y. 2010. Drip irrigation water distribution patterns: Effects of emitter rate, pulsing, and antecedent water. Soil Science Society of America Journal. 74(6):1886-1896.Comparison of model- and design-based sampling strategies for characterizing spatial variablity with ECa-directed soil sampling

- (Peer Reviewed Journal)Corwin, D.L., Lesch, S.M., Segal, E., Shouse, P.J., Skaggs, T.H., Bradford, S.A. 2010. Comparison of model- and design-based sampling strategies for characterizing spatial variablity with ECa-directed soil sampling. Journal of Environmental & Engineering Geophysics. 15(3):147-162.Analytical solution for multi-species contaminant transport in finite media with time-varying boundary conditions

- (Peer Reviewed Journal)Perez Guerrero, J.S., Skaggs, T.H., Van Genuchten, M.T. 2010. Analytical solution for multi-species contaminant transport in finite media with time-varying boundary conditions. Transport in Porous Media. 85(1):171-188.Changes in spatial and temporal variability of SAR affected by shallow groundwater management of an irrigated field, California

- (Peer Reviewed Journal)Shouse, P.J., Goldberg, S.R., Skaggs, T.H., Soppe, R.O., Ayars, J.E. 2010. Changes in spatial and temporal variability of SAR affected by shallow groundwater management of an irrigated field, California. Agricultural Water Management. 97(5):673-680.Measuring Particle Size Distribution using Laser Diffraction: Implications for Predicting Soil Hydraulic Properties

- (Peer Reviewed Journal)Segal, E., Shouse, P.J., Bradford, S.A., Skaggs, T.H., Corwin, D.L. 2009. Measuring Particle Size Distribution using Laser Diffraction: Implications for Predicting Soil Hydraulic Properties. Soil Science. 174(12)639:645.Reclamation of saline soils by partial ponding: Simulations for different soils

- (Peer Reviewed Journal)Siyal, A.A., Skaggs, T.H., Van Genuchten, M. 2010. Reclamation of saline soils by partial ponding: Simulations for different soils. Vadose Zone Journal. 9(2):486-495.Simulation of Populus euphratica root uptake of groundwater in an arid woodland of the Ejina basin, China

- (Peer Reviewed Journal)Zhu, Y., Ren, L., Skaggs, T.H., Lu, H., Yu, Z., Wu, Y. 2009. Simulation of Populus euphratica root uptake of groundwater in an arid woodland of the Ejina basin, China. Hydrological Processes. Available: http://www3.interscience.wiley.com/journal/122405848/abstractAnalytical Solution for Multi-Species Contaminant Transport Subject to Sequential First-Order Decay Reactions in Finite Media

- (Peer Reviewed Journal)Pérez Guerrero, J.S., Skaggs, T.H., Van Genuchten, M.T. 2009. Analytical Solution for Multi-Species Contaminant Transport Subject to Sequential First-Order Decay Reactions in Finite Media. Transport in Porous Media. 80(2):373-387.Analytical solution of the advection-diffusion transport equation using a change-of-variable and integral transform technique

- (Peer Reviewed Journal)Perez-Guerrero, J.S., Pimentel, L.G., Skaggs, T.H., Van Genuchten, M.T. 2009. Analytical solution of the advection-diffusion transport equation using a change-of-variable and integral transform technique. International Journal of Heat and Mass Transfer. 52:3297-3304.A ROOT ZONE MODELLING APPROACH TO ESTIMATING GROUNDWATER RECHARGE FROM IRRIGATED AREAS

- (Peer Reviewed Journal)Jimenez-Martinez, J., Skaggs, T.H., Van Genuchten, M.T., Candela, L. 2009. A Root Zone Modelling Approach to Estimating Ground Recharge from Irrigated Areas. Journal of Hydrology. 367:138–149.Measured and simulated soil weeting patterns under porous clay pipe subsurface irrigation

- (Peer Reviewed Journal)Siyal, A.A., Skaggs, T.H. 2009. Measured and simulated soil weeting patterns under porous clay pipe subsurface irrigation. Agricultural Water Management. 96:893-904.Comparison of Measured and Simulated Water Storage in Dryland Terraces of the Loess Plateau, China

- (Peer Reviewed Journal)Lu, H., Zhu, Y., Skaggs, T.H., Yu, Z. 2008. Comparison of Measured and Simulated Water Storage in Dryland Terraces of the Loess Plateau, China. Agricultural Water Management. 96(2):299-306.Roots and Root Function: Introduction

- (Review Article)Skaggs, T.H., Shouse, P.J. 2008. Roots and Root Function: Introduction. Vadose Zone Journal. 7(3):1008-1009.HYDRUS-1D Modeling of an Irrigated Agricultural Plot with Application to Aquifer Recharge Estimation

- (Proceedings)Jimenez-Martinez, J., Skaggs, T.H., Van Genuchten, M.T., Candela, L. 2008. Hydrus-1d modeling of an irrigated agricultural plot with application to aquifer recharge estimation. Meeting Abstract.  Proceedings of the Second HYDRUS Workshop, March 28, 2008 pp:61-65Determination of root-zone water storage in a desert woodland using a two-layer moisture balance model

- (Proceedings)Zhu, Y., Ren, L., Lu, H., Skaggs, T.H. 2008. Determination of root-zone water storage in a desert woodland using a two-layer moisture balance model. In: Hydrological Research in China: Process Studies, Modelling Approaches and Applications. Proceedings. IAHS Publication 322 pp: 246-251.Estimation of recharge from irrigation flows; Analysis of field and laboratory data and modeling.

- (Proceedings)Jimenez, J., Skaggs, T.H., Van Genuchten, M.T., Candela, L. Estimation of recharge from irrigation flows; Analysis of field and laboratory data and modeling.. Meeting Proceedings. Estudios de la Zona No Saturado del Suelo, ZNS'07, Nov 14-16, 2007, Univ of Cordoba, Spain.  Vol VIII, p. 101-105Analytical Advection-Dispersion Model for Transport and Plant Uptake of Solutes in the Root Zone

- (Peer Reviewed Journal)Skaggs, T.H., Jarvis, N.J., Pontedeiro, E.M., Van Genuchten, M.T., Cotta, R.M. 2007. Analytical Advection-Dispersion Model for Transport and Plant Uptake of Solutes in the Root Zone. Vadose Zone Journal. Vol 6:890-898Irrigation of forage crops with saline drainage waters:  Volumetric lysimeter studies and modeling of root water uptake and drainage

- (Abstract Only)Skaggs, T.H. 2007. Irrigation of forage crops with saline drainage waters:  Volumetric lysimeter studies and modeling of root water uptake and drainage. American Chemical Society National Meeting, Chicago, IL Mar 25-29, 2007.  Paper No. SUST92MACROSCOPIC APPROACHES TO ROOT WATER UPTAKE AS A FUNCTION OF WATER AND SALINITY STRESS

- (Peer Reviewed Journal)Skaggs, T.H., Van Genuchten, M.T., Shouse, P.J., Poss, J.A. 2006. Macroscopic approaches to root water uptake as a function of water and salinity stress. Agricultural Water Management.  86:140-149MACROSCOPIC APPROACHES TO MODELING ROOT WATER UPTAKE AS A FUNCTION OF WATER AND SALINITY STRESS

- (Abstract Only)Skaggs, T.H., Van Genuchten, M.T., Shouse, P.J. 2006. Macroscopic approaches to modeling root water uptake as a function of water and salinity stress. Soil Science Society of America Annual Meeting.  In annual meeting abstracts (CD-ROM). Paper No. 81-1REVIEW OF “PERCOLATION THEORY FOR FLOW IN POROUS MEDIA (LECTURE NOTES IN PHYSICS 674)”

- (Other)Skaggs, T.H. 2006. Review of “Percolation theory for flow in porous media (lecture notes in physics 674)” by Allen G. Hunt. Vadose Zone Journal.  5:1154IRRIGATING FORAGE CROPS WITH SALINE WATERS 1.  VOLUMETRIC LYSIMETER STUDIES

- (Peer Reviewed Journal)Skaggs, T.H., Poss, J.A., Shouse, P.J., Grieve, C.M. 2006. Irrigating forage crops with saline waters 1.  volumetric lysimeter studies. Vadose Zone Journal. 5:815-823.IRRIGATING FORAGE CROPS WITH SALINE WATERS 2.  MODELING ROOT UPTAKE AND DRAINAGE

- (Peer Reviewed Journal)Skaggs, T.H., Shouse, P.J., Poss, J.A. 2006. Irrigating forage crops with saline waters 2.  modeling root uptake and drainage. Vadose Zone Journal. 5:824-837.EFFECTS OF SHALLOW GROUNDWATER MANAGEMENT ON THE SPATIAL AND TEMPORAL VARIABILITY OF BORON AND SALINITY IN AN IRRIGATED FIELD

- (Peer Reviewed Journal)Shouse, P.J., Goldberg, S.R., Soppe, R.W., Skaggs, T.H., Ayars, J.E. 2006. Effects of shallow groundwater management on the spatial and temporal variability of boron and salinity in an irrigated field. Vadose Zone Journal. 5:377-390.IRRIGATION PRACTICES THAT IMPROVE DRIP FUMIGATION.

- (Proceedings)Trout, T.J., Skaggs, T.H., Rothfuss, Y. 2005. Irrigation practices that improve drip fumigation.. Methyl Bromide Alternatives and Emissions Research Conference Proceedings.  Annual International Research Conference on Methyl Bromide Alternatives And Emissions Reductions Conference 2005, pp 35-1 - 35-3.SOLUTE TRANSPORT IN THE ROOT ZONE:  PROBLEM FORMULATION AND ANALYTICAL SOLUTIONS

- (Abstract Only)Skaggs, T.H., Pontedeiro, E.M., Van Genuchten, M.T., Jarvis, N., Cotta, R.M. 2005. Solute transport in the root zone:  problem formulation and analytical solutions. American Geophysical Union Abstract. CD-ROM, San Francisco, CA.UNSODA:  UNSATURATED SOIL HYDRAULIC PROPERTY DATABASE

- (Abstract Only)Skaggs, T.H., Van Genuchten, M.T., Schaap, M.G., Shouse, P.J. 2005. Unsoda:  unsaturated soil hydraulic property database. Agronomy Abstracts. CD-ROM, Salt Lake City, UT.  Paper No. 10RECENT APPLICATIONS OF HYDRUS IN IRRIGATED AGRICULTURE

- (Proceedings)Skaggs, T.H., Trout, T.J., Kelleners, T.J., Shouse, P.J., Ayars, J.E. 2005. Recent applications of hydrus in irrigated agriculture. In: S. Torkzaban and S. Majid Hassanizadeh (eds.), Proceedings of Workshop on HYDRUS Applications. October 19, 2005, ISBN 90-39341125, Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands. p: 69-72.PARAMETERIZING ROOT WATER UPTAKE AS A FUNCTION OF WATER AND SALINITY STRESS

- (Abstract Only)Van Genuchten, M.T., Skaggs, T.H. 2005. Parameterizing root water uptake as a function of water and salinity stress. Trans American Geophysical Union.  86(16), Joint Assembly Suppl., New Orleans, LA. Abstract H41B-05 (CD-ROM).SPATIAL AND TEMPORAL DISTRIBUTIONS OF SALINITY AND BORON IN AN IRRIGATED FIELD UNDER SHALLOW GROUNDWATER MANAGEMENT

- (Proceedings)Shouse, P.J., Goldberg, S.R., Soppe, R.W., Skaggs, T.H., Ayars, J.E. 2005. Spatial and temporal distributions of salinity and boron in an irrigated field under shallow groundwater management. In: Proceedings of the International Salinity Forum, Managing Saline Soils and Water: Science, Technology, and Soil Issues. April 25-27, 2005. Riverside, CA  pp:417-420.INSTRUMENTING LARGE SOIL COLUMNS FOR SALINITY AND TRACE ELEMENT TRANSPORT STUDIES

- (Proceedings)Shouse, P.J., Goldberg, S.R., Skaggs, T.H., Suarez, D.L. 2005. Instrumenting large soil columns for salinity and trace element transport studies.  In: Proceedings of the International Salinity Forum, Managing Saline Soils and Water: Science, Technology, and Soil Issues. April 25-27, 2005. Riverside, CA  pp:147-149.IRRIGATION OF FORAGE CROPS WITH SALINE DRAINAGE WATERS:  VOLUMETRIC LYSIMETER STUDIES AND MODELING OF ROOT WATER UPTAKE AND DRAINAGE

- (Proceedings)Skaggs, T.H., Poss, J.A., Shouse, P.J. 2005. Irrigation of forage crops with saline drainage waters:  Volumetric lysimeter studies and modeling of root water uptake and drainage. In: Proceedings of the International Salinity Forum, Managing Saline Soils and Water: Science, Technology, and Soil Issues. April 25-27, 2005. Riverside, CA pp:421-424.EFFECTS OF SALINITY AND DROUGHT STRESSES ON ROOT WATER UPTAKE

- (Abstract Only)Skaggs, T.H., Poss, J.A., Shouse, P.J. 2004. Effects of salinity and drought stresses on root water uptake. American Geophysical Union, Eos Trans., Fall Meeting Supplement, AGU, CD-ROM.FREQUENCY DEPENDENCE OF THE COMPLEX PERMITTIVITY AND ITS IMPACT ON DIELECTRIC SENSOR CALIBRATION IN SOILS

- (Peer Reviewed Journal)Kelleners, T.J., Robinson, D.A., Shouse, P.J., Ayars, J.E., Skaggs, T.H.,  2005. Frequency dependence of the complex permittivity and its impact on dielectric sensor calibration in soils. Soil Science Society of America Journal. 69:67-76.INVERSE ANALYSIS OF UPWARD WATER FLOW IN A GROUNDWATER TABLE LYSIMETER

- (Peer Reviewed Journal)Kelleners, T.J., Soppe, R.W., Ayars, J.E., Simunek, J., Skaggs, T.H. 2005. Inverse analysis of upward water flow in a groundwater table lysimeter. Vadose Zone Journal. Vol 4: 558-572 (2005)FORAGE CROP RESPONSE TO SALINITY AND WATER STRESSES:  COMPARISON OF SIMULATED ROOT WATER UPTAKE AND DRAINAGE WITH LYSIMETER DATA

- (Abstract Only)Skaggs, T.H., Poss, J.A., Shouse, P.J. 2004. Forage crop response to salinity and water stresses:  comparison of simulated root water uptake and drainage with lysimeter data. Agronomy Abstracts. CD-ROM, Seattle, WA.COMPARISON OF HYDRUS-2D SIMULATIONS OF DRIP IRRIGATION WITH EXPERIMENTAL OBSERVATIONS

- (Peer Reviewed Journal)Skaggs, T.H., Trout, T.J., Simunek, J., Shouse, P.J. 2004. Comparison of HYDRUS-2D simulations of drip irrigation with experimental observations. Journal of Irrigation and Drainage Engineering. 130(4):304-310.CALIBRATION OF CAPACITANCE PROBE SENSORS IN A SALINE SILTY CLAY SOIL

- (Peer Reviewed Journal)Kelleners, T.J., Soppe, R.W., Ayars, J.E., Skaggs, T.H. 2004. Calibration of capacitance probe sensors in a saline silty clay soil. Soil Science Society of America Journal. 68:770-778.CALIBRATION OF CAPACITANCE PROBE SENSORS USING ELECTRIC CIRCUIT THEORY

- (Abstract Only)Kelleners, T.J., Soppe, R., Robinson, D., Schaap, M., Ayars, J.E., Skaggs, T.H. 2003. Calibration of capacitance probe sensors using electric circuit theory.  CD-ROM. Agronomy Abstracts. Denver, CO.EFFECTS OF FINITE SYSTEM-SIZE AND FINITE INHOMOGENEITY ON THE CONDUCTIVITY OF BROADLY DISTRIBUTED RESISTOR NETWORKS

- (Peer Reviewed Journal)Skaggs, T.H. 2003. Effects of finite system-size and finite inhomogeneity on the conductivity of broadly distributed resistor networks. Physica B. 338:266-269.UNSATURATED ZONE PARAMETER ESTIMATION USING THE HYDRUS AND ROSETTA SOFTWARE PACKAGES

- (Proceedings)Van Genuchten, M.T., Simunek, J., Schaap, M.G., Skaggs, T.H. 2003. Unsaturated zone parameter estimation using the hydrus and rosetta software packages. Proceedings of the International Workshop on Uncertainty, Sensitivity, and Parameter Estimation for Multimedia Environmental Modeling. Publisher: U.S. Nuclear Regulatory Commission, pp. 41-43.CALIBRATION OF CAPACITANCE PROBE SENSORS USING ELECTRIC CIRCUIT THEORY

- (Peer Reviewed Journal)Kelleners, T.J., Soppe, R.W., Robinson, D.A., Schaap, M.G., Ayars, J.E., Skaggs, T.H. 2004. Calibration of capacitance probe sensors using electric circuit theory. Soil Science Society of America Journal. 68:430-439.EVOLUTION OF SOIL MOISTURE SPATIAL STRUCTURE IN A MIXED VEGETATION PIXEL DURING THE SOUTHERN GREAT PLAINS 1997 (SGP97) HYDROLOGY EXPERIMENT

- (Peer Reviewed Journal)NUMERICAL MODELING OF SUBSURFACE DRIP IRRIGATION

- (Abstract Only)Skaggs, T.H., Simunek, J., Ayars, J.E., Trout, T.J. Numerical modeling of subsurface drip irrigation. Agronomy Abstracts.  In Annual meetings abstracts (CD-ROM).  ASA, CSSA, and SSSA, Madison, WI.6.5 SOLUTE TRANSPORT: DATA ANALYSIS AND PARAMETER ESTIMATION

- (Book / Chapter)Skaggs, T.H., Jaynes, D.B., Kachanoski, R.G., Shouse, P.J., Ward, A.L. 2002. 6.5 solute transport: data analysis and parameter estimation. In. J.H. Dane and G.C. Topp. (eds). Methods of Soil Analysis. Part 4 Physical Methods. Soil Science of America, Madison, WI. Chapter 6.5. p. 1403-1434.SPATIO-TEMPORAL EVOLUTION AND TIME-STABLE CHARACTERISTICS OF SOIL MOISTURE WITHIN REMOTE SENSING FOOTPRINTS WITH VARYING SOIL, SLOPE, AND VEGETATION

- (Peer Reviewed Journal)STATE SPACE ANALYSIS OF SOIL WATER AND SALINITY REGIMES IN A LOAM SOIL     UNDERLAIN BY SHALLOW GROUNDWATER.

- (Book / Chapter)ANALYSIS AND MAPPING OF FIELD-SCALE SOIL MOISTURE VARIABILITY USING HIGH-RESOLUTION, GROUND-BASED DATA DURING THE SOUTHERN GREAT PLAINS 1997 (SGP97) HYDROLOGY EXPERIMENT

- (Peer Reviewed Journal)ESTIMATING EXCEEDANCE PROBABILITIES FOR THE CUMULATIVE SOLUTE MASS FLUX IN HETEROGENEOUS GROUNDWATER SYSTEMS

- (Abstract Only)


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