Data from: Vegetation index-based partitioning of evapotranspiration is deficient in grazed systems

The dataset includes 30 minutes values of partitioned evaporation (E) and transpiration (T), T:ET ratios, and other ancillary datasets for three ET partitioning methods viz. Flux Variance Similarity (FVS) method, Transpiration Estimation Algorithm (TEA), and Underlying Water Use Efficiency (uWUE) method for three wheat sites. Three wheat sites had different grazing treatments. For example, Site 1 was Grain-only and Graze-grain wheat for the 2016-17 and 2017-18 growing seasons, respectively. Site 2 was Grain-only wheat for the 2017-18 growing season. Site 3 was Graze-grain and Graze-out wheat for the 2016-17 and 2017-18 growing seasons, respectively.

The grain-only wheat system is a single purpose to produce wheat grains only. Graze-grain wheat system has a dual purpose as it serves as a pasture for grazing cattle from November to February and is used to produce wheat grains later. Graze-out wheat system is also a single purpose crop that is grazed by the cattle for the entire season to solely serve as a pasture.

FVS method performed ET partitioning using the high frequency (10 Hz) data collected from Eddy Covariance Flux stations, located near the middle of each field. The high-frequency data were also processed using the EddyPro software to get good quality estimates of different fluxes at 30-minute intervals. The processed 30-min data were used by TEA and uWUE methods for ET partitioning. Ancillary hydro-meteorological variables including net radiation, air temperature, soil water content, relative humidity, and others, also have been included in this dataset.

The study sites were located at the United States Department of Agriculture, Agricultural Research Service (USDA-ARS), Grazinglands Research Laboratory, El Reno, Oklahoma. All sites were rainfed.

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FVS output and other met data and site infoxlsx
Output of FVS model along with corresponding meteorological data and site...
MD5:
Explore Data 9.07 MB
TEA outputxlsx
Out from TEA model along with site metadata.

MD5:
Explore Data 6.52 MB
WUE outputxlsx
Output of WUE model run along with site metadata.

MD5:
Explore Data 1.51 MB
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Field	Value
Tags	Agroecosystems & Environment Water Evapotranspiration Evapotranspiration Eddy Covariance Flux Evapotranspiration Partitioning WUE Algorithms NP215
Modified	2022-10-06
Release Date	2022-08-19
Frequency	Continuously
Identifier	b54a5341-27ed-4fe6-81d5-c617691c279d
Spatial / Geographical Coverage Area	POINT (-98.063128 35.559815) POINT (-98.063063 35.567352) POINT (-98.019466 35.5667)
Publisher	Ag Data Commons
Spatial / Geographical Coverage Location	Grazinglands Research Laboratory, El Reno, OK
Temporal Coverage	September 29, 2016 to June 30, 2018
License	U.S. Public Domain
Contact Name	Wagle, Pradeep
Contact Email	pradeep.wagle@usda.gov
Public Access Level	Public
Program Code	005:040 - Department of Agriculture - National Research
Bureau Code	005:18 - Agricultural Research Service

Extended Metadata:

Field	Value
Authors	Pushpendra, Raghav (ORCID) Wagle, Pradeep (ORCID) Kumar, Mukesh (ORCID) Banerjee, Tirtha (ORCID) Neel, James P. (Scopus Author ID)
Peer Reviewed	Yes
Intended Use	This dataset is intended for use with the publication.
Equipment or Software Used	Fluxpart EddyPro ENVI
Funding Sources	National Science Foundation OIA-2019561 National Science Foundation EAR-1920425 Agricultural Research Service 3070-21610-003-00D U.S. Department of Agriculture USDA - LTAR National Institute of Food and Agriculture 2019-68012-29888 National Science Foundation EAR-1856054
Primary Article	Raghav, P., Wagle, P., Kumar, M., Banerjee, T., & Neel, J. P. S. (2022). Vegetation Index‐Based Partitioning of Evapotranspiration Is Deficient in Grazed Systems. Water Resources Research, 58(8). https://doi.org/10.1029/2022wr032067 AgID: 10113/7917038
Related Articles	Wagle, P., Gowda, P. H., Northup, B. K., Neel, J. P., Starks, P. J., Turner, K. E., Moriasi, D. N., Xiao, X., & Steiner, J. L. (2021). Carbon dioxide and water vapor fluxes of multi-purpose winter wheat production systems in the U.S. Southern Great Plains. Agricultural and Forest Meteorology, 310, 108631. https://doi.org/10.1016/j.agrformet.2021.108631 AgID: 7499580 Wagle, P., Skaggs, T. H., Gowda, P. H., Northup, B. K., Neel, J. P. S., & Anderson, R. G. (2021). Evaluation of Water Use Efficiency Algorithms for Flux Variance Similarity‐Based Evapotranspiration Partitioning in C 3 and C 4 Grain Crops. Water Resources Research, 57(5). https://doi.org/10.1029/2020wr028866 AgID: 10113/7458277 Khand, K., Bhattarai, N., Taghvaeian, S., Wagle, P., Gowda, P. H., & Alderman, P. D. (2021). Modeling Evapotranspiration of Winter Wheat Using Contextual and Pixel-Based Surface Energy Balance Models. Transactions of the ASABE, 64(2), 507-519. https://doi.org/10.13031/trans.14087 AgID: 10113/7329720 Tadesse, H. K., Moriasi, D. N., Gowda, P. H., Wagle, P., Starks, P. J., Steiner, J. L., Talebizadeh, M., Neel, J. P., & Nelson, A. M. (2021). Comparison of Evapotranspiration and Biomass Simulation in Winter Wheat under Conventional and Conservation Tillage Systems using APEX Model. Ecohydrology & Hydrobiology, 21(1), 55-66. https://doi.org/10.1016/j.ecohyd.2020.08.003 AgID: 7083137 Wagle, P., Gowda, P. H., Manjunatha, P., Northup, B. K., Rocateli, A. C., & Taghvaeian, S. (2019). Carbon and water dynamics in co-located winter wheat and canola fields in the U.S. Southern Great Plains. Agricultural and Forest Meteorology, 279, 107714. https://doi.org/10.1016/j.agrformet.2019.107714 AgID: 6593400 Wagle, P., Gowda, P. H., Northup, B. K., Turner, K. E., Neel, J. P., Manjunatha, P., & Zhou, Y. (2018). Variability in carbon dioxide fluxes among six winter wheat paddocks managed under different tillage and grazing practices. Atmospheric Environment, 185, 100-108. https://doi.org/10.1016/j.atmosenv.2018.05.003 AgID: 6495929
Dataset DOI (digital object identifier)	10.15482/USDA.ADC/1527834
Product Type	Dataset

Field	Value
ARIS Log Number	389525
OSTI Identifier
ISO Topic(s)	climatologyMeteorologyAtmosphere environment farming
State or Territory	Oklahoma
National Agricultural Library Thesaurus Term	evapotranspiration data collection transpiration algorithms water use efficiency wheat grazing eddy covariance hydrometeorology air temperature soil water content soil water relative humidity grazing lands agroecosystems
Ag Data Commons Keywords	Agroecosystems & Environment Water Evapotranspiration Agroecosystems & Environment Water Agroecosystems & Environment
Program	Long-Term Agroecosystem Research - LTAR Southern Plains

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