Tower_team:
PI:	Andy Suyker asuyker1@unl.edu - University of Nebraska - Lincoln
DataManager:	Dan Hatch dhatch2@unl.edu - University of Nebraska
Lat, Long:	41.1649, -96.4701
Elevation(m):	362
Network Affiliations:	AmeriFlux
Vegetation IGBP:	CRO (Croplands: Lands covered with temporary crops followed by harvest and a bare soil period (e.g., single and multiple cropping systems). Note that perennial woody crops will be classified as the appropriate forest or shrub land cover type.)
Climate Koeppen:	Dfa (Humid Continental: humid with severe winter, no dry season, hot summer)
Mean Annual Temp (°C):	10.08
Mean Annual Precip. (mm):	788.89
Flux Species Measured:	CO2
Years Data Collected:	2001 - Present
Years Data Available:	AmeriFlux BASE 2001 - 2024 Data Citation
Data Use Policy:	AmeriFlux CC-BY-4.0 Policy¹
Description:	The study site is one of three fields (all located within 1.6 km of each other) at the University of Nebraska Agricultural Research and Development Center ... The study site is one of three fields (all located within 1.6 km of each other) at the University of Nebraska Agricultural Research and Development Center near Mead, Nebraska. This site is irrigated with a center pivot system. Prior to the initiation of the study, the irrigated site had a 10-yr history of maize-soybean rotation under no-till. A tillage operation (disking) was done just prior to the 2001 planting to homogenize the top 0.1 m of soil, incorporate P and K fertilizers, as well as previously accumulated surface residues. Since this tillage operation, the site has been under no-till management. See More Show Less
URL:	http://csp.unl.edu/public/
Research Topics:	The overall goals are to investigate the C sequestration potential of major rainfed and irrigated agroecosystems in the north-central USA and to understand ... The overall goals are to investigate the C sequestration potential of major rainfed and irrigated agroecosystems in the north-central USA and to understand the biophysical controls on C sequestration. See More Show Less
Acknowledgment:	—

Site Tasks

Add Image Add Publication Download Data Add to Site Set

Site Set Add Site to Set Cancel Manage Site Sets

This site’s data can also be used under the more restrictive AmeriFlux Legacy Policy.
The AmeriFlux Legacy Policy must be followed if this site’s data are combined with data from sites that require the AmeriFlux Legacy Policy.

Site Photo More Site Images

Image Credit: , 08/11/2012
Copyright preference: Open use

Site Publication More Site Publications

Use the information below for citation of this site. See the Data Policy page for more details.

DOI(s) for citing US-Ne2 data

Data Use Policy: AmeriFlux CC-BY-4.0 License

This site’s data can also be used under the more restrictive AmeriFlux Legacy Policy.
The AmeriFlux Legacy Policy must be followed if US-Ne2 data are combined with data from sites that require the AmeriFlux Legacy Policy.

AmeriFlux BASE: https://doi.org/10.17190/AMF/1246085
Citation: Andy Suyker (2024), AmeriFlux BASE US-Ne2 Mead - irrigated maize-soybean rotation site, Ver. 18-5, AmeriFlux AMP, (Dataset). https://doi.org/10.17190/AMF/1246085

To cite BADM when downloaded on their own, use the publications below for citing site characterization. When using BADM that are downloaded with AmeriFlux BASE and AmeriFlux FLUXNET products, use the DOI citation for the associated data product.

Publication(s) for citing site characterization

—

Acknowledgments

—

Resources

AmeriFlux Logos & Acknowledgments

This page displays the list of downloads of data for the site {{siteId}}.

Note: Results are the number of downloads to distinct data users. The Download Count column indicates the number of times the data user downloaded the data. The Version column refers to the version of the data product for the site that was downloaded by the data user.

Year Range

Showing {{startItem + 1}} to {{(startItem + items) > filtered.length ? filtered.length : (startItem + items)}} of {{filtered.length}} results Showing 0 to 0 of 0 results

Products :

All

Site Team View

Items Per Page:

Date	Name	Data Product	Version	Intended Use	Intended Use Description	Download Count
{{dlObject.timeStamp}}	{{dlObject.displayName}}	{{displayProduct(dlObject.dataProduct)}}	{{dlObject.version}}	{{dlObject.intendedUse}}	{{dlObject.comment}}	{{dlObject.downloadCounter}}
No results to display

Date	Name	Data Product	Vers.	Intended Use	Intended Use Description	Download Count
{{dlObject.timeStamp}}	{{dlObject.displayName}}	{{displayProduct(dlObject.dataProduct)}}	{{dlObject.version}}	{{dlObject.intendedUse}}	{{dlObject.comment}}	{{dlObject.downloadCounter}}

Showing {{startItem + 1}} to {{(startItem + items) > filtered.length ? filtered.length : (startItem + items)}} of {{filtered.length}} results

Showing 0 to 0 of 0 results

Items Per Page:

Search Images for this Site Images found : 1

AmeriFlux Images

Add Image

Regular Maintenance at US-Ne2
**Description:**
Tom Lowman, UNL Ag Met lab manager, services the eddy covariance sensors at US-Ne2
Keywords: eddy covariance, maintenance, US-Ne2
**Site ID:** US-Ne2
**Location:** Nebraska, United States
**Image Date:** 2012/08/11
**Journal:** —
**Article Title:** —
**Copyright Permissions:** —
**Right to Use:** Open use

View in Original Size
To download, right-click photo (Mac: control-click) and choose Save Image As

Search Publications for this Site Publications Found: 28

AmeriFlux Publications

Add Publication

Year	Publication
2021	Chu, H., Luo, X., Ouyang, Z., Chan, W. S., Dengel, S., Biraud, S. C., Torn, M. S., Metzger, S., Kumar, J., Arain, M. A., Arkebauer, T. J., Baldocchi, D., Bernacchi, C., Billesbach, D., Black, T. A., Blanken, P. D., Bohrer, G., Bracho, R., Brown, S., Brunsell, N. A., Chen, J., Chen, X., Clark, K., Desai, A. R., Duman, T., Durden, D., Fares, S., Forbrich, I., Gamon, J. A., Gough, C. M., Griffis, T., Helbig, M., Hollinger, D., Humphreys, E., Ikawa, H., Iwata, H., Ju, Y., Knowles, J. F., Knox, S. H., Kobayashi, H., Kolb, T., Law, B., Lee, X., Litvak, M., Liu, H., Munger, J. W., Noormets, A., Novick, K., Oberbauer, S. F., Oechel, W., Oikawa, P., Papuga, S. A., Pendall, E., Prajapati, P., Prueger, J., Quinton, W. L., Richardson, A. D., Russell, E. S., Scott, R. L., Starr, G., Staebler, R., Stoy, P. C., Stuart-Haëntjens, E., Sonnentag, O., Sullivan, R. C., Suyker, A., Ueyama, M., Vargas, R., Wood, J. D., Zona, D. (2021) Representativeness Of Eddy-Covariance Flux Footprints For Areas Surrounding Ameriflux Sites, Agricultural And Forest Meteorology, 301-302, 108350. https://doi.org/10.1016/j.agrformet.2021.108350
2019	Zhang, Q., Ficklin, D. L., Manzoni, S., Wang, L., Way, D., Phillips, R. P., Novick, K. A. (2019) Response Of Ecosystem Intrinsic Water Use Efficiency And Gross Primary Productivity To Rising Vapor Pressure Deficit, Environmental Research Letters, 14(7), 074023. https://doi.org/10.1088/1748-9326/ab2603
2013	Barr, A., Richardson, A., Hollinger, D., Papale, D., Arain, M., Black, T., Bohrer, G., Dragoni, D., Fischer, M., Gu, L., Law, B., Margolis, H., McCaughey, J., Munger, J., Oechel, W., Schaeffer, K. (2013) Use Of Change-Point Detection For Friction–Velocity Threshold Evaluation In Eddy-Covariance Studies, Agricultural And Forest Meteorology, 171-172, 31-45. https://doi.org/10.1016/j.agrformet.2012.11.023
2014	Matheny, A. M., Bohrer, G., Stoy, P. C., Baker, I. T., Black, A. T., Desai, A. R., Dietze, M. C., Gough, C. M., Ivanov, V. Y., Jassal, R. S., Novick, K. A., Schäfer, K. V., Verbeeck, H. (2014) Characterizing The Diurnal Patterns of Errors in The Prediction of Evapotranspiration by Several Land-Surface Models: An Nacp Analysis, Journal Of Geophysical Research: Biogeosciences, 119(7), 1458-1473. https://doi.org/10.1002/2014JG002623
2018	McCombs, A. G., Hiscox, A. L., Wang, C., Desai, A. R., Suyker, A. E., Biraud, S. C. (2018) Carbon Flux Phenology From The Sky: Evaluation For Maize And Soybean, Journal Of Atmospheric And Oceanic Technology, 35(4), 877-892. https://doi.org/https://doi.org/10.1175/JTECH-D-17-0004.1
2019	Sullivan, R. C., Kotamarthi, V. R., Feng, Y. (2019) Recovering Evapotranspiration Trends From Biased CMIP5 Simulations And Sensitivity To Changing Climate Over North America, Journal Of Hydrometeorology, 20(8), 1619-1633. https://doi.org/10.1175/JHM-D-18-0259.1
2019	Sullivan, R. C., Cook, D. R., Ghate, V. P., Kotamarthi, V. R., Feng, Y. (2019) Improved Spatiotemporal Representativeness And Bias Reduction Of Satellite-Based Evapotranspiration Retrievals Via Use Of In Situ Meteorology And Constrained Canopy Surface Resistance, Journal Of Geophysical Research: Biogeosciences, 124(2), 342-352. https://doi.org/10.1029/2018JG004744
2018	Chu, H., Baldocchi, D. D., Poindexter, C., Abraha, M., Desai, A. R., Bohrer, G., Arain, M. A., Griffis, T., Blanken, P. D., O'Halloran, T. L., Thomas, R. Q., Zhang, Q., Burns, S. P., Frank, J. M., Christian, D., Brown, S., Black, T. A., Gough, C. M., Law, B. E., Lee, X., Chen, J., Reed, D. E., Massman, W. J., Clark, K., Hatfield, J., Prueger, J., Bracho, R., Baker, J. M., Martin, T. A. (2018) Temporal Dynamics Of Aerodynamic Canopy Height Derived From Eddy Covariance Momentum Flux Data Across North American Flux Networks, Geophysical Research Letters, 45, 9275–9287. https://doi.org/10.1029/2018GL079306
2003	Dobermann, A., Ping, J. L., Adamchuk, V. I., Simbahan, G. C., Ferguson, R. B. (2003) Classification Of Crop Yield Variability In Irrigated Production Fields, Agronomy Journal, 95(5), 1105-1120. https://doi.org/10.2134/agronj2003.1105
2006	Richardson, A. D., Hollinger, D. Y., Burba, G. G., Davis, K. J., Flanagan, L. B., Katul, G. G., William Munger, J., Ricciuto, D. M., Stoy, P. C., Suyker, A. E., Verma, S. B., Wofsy, S. C. (2006) A Multi-Site Analysis Of Random Error In Tower-Based Measurements Of Carbon And Energy Fluxes, Agricultural And Forest Meteorology, 136(1-2), 1-18. https://doi.org/10.1016/j.agrformet.2006.01.007
2004	Simbahan, G. C., Dobermann, A., Ping, J. L. (2004) Screening Yield Monitor Data Improves Grain Yield Maps, Agronomy Journal, 96(4), 1091-1102. https://doi.org/10.2134/agronj2004.1091
2003	Gitelson, A. A., Viña, A., Arkebauer, T. J., Rundquist, D. C., Keydan, G., Leavitt, B. (2003) Remote Estimation Of Leaf Area Index And Green Leaf Biomass In Maize Canopies, Geophysical Research Letters, 30(5), n/a-n/a. https://doi.org/10.1029/2002gl016450
2005	Mahmood, R., Hubbard, K. G. (2005) Assessing Bias In Evapotranspiration And Soil Moisture Estimates Due To The Use Of Modeled Solar Radiation And Dew Point Temperature Data, Agricultural And Forest Meteorology, 130(1-2), 71-84. https://doi.org/10.1016/j.agrformet.2005.02.004
2004	Suyker, A., Verma, S., Burba, G., Arkebauer, T., Walters, D., Hubbard, K. (2004) Growing Season Carbon Dioxide Exchange In Irrigated And Rainfed Maize, Agricultural And Forest Meteorology, 124(1-2), 1-13. https://doi.org/10.1016/j.agrformet.2004.01.011
2004	Yang, H., Dobermann, A., Lindquist, J., Walters, D., Arkebauer, T., Cassman, K. (2004) Hybrid-Maize—A Maize Simulation Model That Combines Two Crop Modeling Approaches, Field Crops Research, 87(2-3), 131-154. https://doi.org/10.1016/j.fcr.2003.10.003
2005	Ping, J. L., Dobermann, A. (2005) Processing Of Yield Map Data, Precision Agriculture, 6(2), 193-212. https://doi.org/10.1007/s11119-005-1035-2
2006	Simbahan, G. C., Dobermann, A., Goovaerts, P., Ping, J., Haddix, M. L. (2006) Fine-Resolution Mapping Of Soil Organic Carbon Based On Multivariate Secondary Data, Geoderma, 132(3-4), 471-489. https://doi.org/10.1016/j.geoderma.2005.07.001
2004	Viña, A., Gitelson, A. A., Rundquist, D. C., Keydan, G., Leavitt, B., Schepers, J. (2004) Monitoring Maize (Zea Mays L.) Phenology With Remote Sensing, Agronomy Journal, 96(4), 1139-1147. https://doi.org/10.2134/agronj2004.1139
2004	Viña, A., Genebry, G.M., Gitelson, A. A. (2004) Satellite Monitoring Of Vegetation Dynamics: Sensitivity Enhancement By The Wide Dynamic Range Vegetation Index, Geophysical Research Letters, 31(4), 1-4. https://doi.org/10.1029/2003gl019034
2005	Amos, B., Arkebauer, T. J., Doran, J. W. (2005) Soil Surface Fluxes Of Greenhouse Gases In An Irrigated Maize-Based Agroecosystem, Soil Science Society Of America Journal, 69(2), 387-395. https://doi.org/10.2136/sssaj2005.0387
2003	Gitelson, A. A., Verma, S. B, Rundquist, D. C., Keydan, G., Leavitt, B., Arkebauer, T. J., Burba, G. G., Suyker, A. E. (2003) Novel Technique For Remote Estimation Of CO2 Flux In Maize, Geophysical Research Letters, 30(9), 1486-n/a. https://doi.org/10.1029/2002GL016543
2003	Ping, J. L., Dobermann, A. (2003) Creating Spatially Contiguous Yield Classes For Site-Specific Management, Agronomy Journal, 95(5), 1121-1131. https://doi.org/10.2134/agronj2003.1121
2004	Gitelson, A. A. (2004) Wide Dynamic Range Vegetation Index For Remote Quantification Of Biophysical Characteristics Of Vegetation, Journal Of Plant Physiology, 161(2), 165-173. https://doi.org/10.1078/0176-1617-01176
2004	Dobermann, A., Ping, J. L. (2004) Geostatistical Integration Of Yield Monitor Data And Remote Sensing Improves Yield Maps, Agronomy Journal, 96(1), 285-297. https://doi.org/10.2134/agronj2004.0285
2003	Cassman, K. G., Dobermann, A., Walters, D. T., Yang, H. (2003) Meeting Cereal Demand While Protecting Natural Resources And Improving Environmental Quality, Annual Review Of Environment And Resources, 28(1), 315-358. https://doi.org/10.1146/annurev.energy.28.040202.122858
2005	Suyker, A. E., Verma, S. B., Burba, G. G., Arkebauer, T. J. (2005) Gross Primary Production And Ecosystem Respiration Of Irrigated Maize And Irrigated Soybean During A Growing Season, Agricultural And Forest Meteorology, 131(3-4), 180-190. https://doi.org/10.1016/j.agrformet.2005.05.007
2005	Verma, S. B., Dobermann, A., Cassman, K. G., Walters, D. T., Knops, J. M., Arkebauer, T. J., Suyker, A. E., Burba, G. G., Amos, B., Yang, H., Ginting, D., Hubbard, K. G., Gitelson, A. A., Walter-Shea, E. A. (2005) Annual Carbon Dioxide Exchange In Irrigated And Rainfed Maize-Based Agroecosystems, Agricultural And Forest Meteorology, 131(1-2), 77-96. https://doi.org/10.1016/j.agrformet.2005.05.003
2005	Ginting, D., Eghball, B. (2005) Nitrous Oxide Emission From No-Till Irrigated Corn, Soil Science Society Of America Journal, 69(3), 915-925. https://doi.org/10.2136/sssaj2004.0292

BADM for This Site

Access the Biological, Ancillary, Disturbance and Metadata (BADM) information and data for this site.

BADM contain information for many uses, such as characterizing a site’s vegetation and soil, describing disturbance history, and defining instrumentation for flux processing. They complement the flux/met data.

Download BADM for this site^*

View Site General Info for this site (Overview tab)^*

Use Online Editor to update Site General Info or DOI Authorship

Update information about submitted data (Variable Information tool)

More BADM resources

^* Online updates are shown on the Overview tab real time. However, downloaded BADM files will not reflect those updates until they have been reviewed for QA/QC.

Wind Roses

Click an image below to enlarge it, or use the navigation panel.

Image scale: 764m x 764m

Data Collected:

Wind roses use variables ‘WS’ and ‘WD’.
Download Data Download Wind Rose as Image File (PNG)

Wind Speed (m/s)

Graph Type

Wind Speed Scale

Wind Direction Scale (%)

Show Satellite Image

Show Wind Rose

Annual Average

About Ameriflux Wind Roses

Wind Rose Explanation

A wind rose gives a succinct view of how wind speed and direction are typically distributed at a particular location. Presented in a circular format, a wind rose shows the frequency and intensity of winds blowing from particular directions. The length of each “spoke” around the circle indicates the amount of time (frequency) that the wind blows from a particular direction. Colors along the spokes indicate categories of wind speed (intensity). Each concentric circle represents a different frequency, emanating from zero at the center to increasing frequencies at the outer circles

Utility

This information can be useful to gain insight into regions surrounding a flux tower that contribute to the measured fluxes, and how those regions change in dependence of the time of day and season. The wind roses presented here are for four periods of the year, and in 16 cardinal directions. Graphics are available for all sites in the AmeriFlux network based on reported wind measurements at each site.

Data from each site can be downloaded by clicking the ‘download’ button.

Hover the cursor over a wind rose to obtain directions, speeds and intensities.

Note that wind roses are not equivalent to flux footprints. Specifically, the term flux footprint describes an upwind area “seen” by the instruments measuring vertical turbulent fluxes, such that heat, water, gas and momentum transport generated in this area is registered by the instruments. Wind roses, on the other hand, identify only the direction and speed of wind.

Where do these data come from?

The wind roses are based on observed hourly data from the sites registered with the AmeriFlux Network.

Parameters for AmeriFlux Wind Roses

To use wind roses for a single AmeriFlux site, the following parameters may be most useful:

Wind Speed Scale: Per Site
Wind Direction Scale (%): Per Site

To compare wind roses from more than one single AmeriFlux site, the following parameters may be most useful:

Wind Speed Scale: Non-Linear
Wind Direction Scale (%): AmeriFlux

Mar - Jun; 6am - 6pm

Mar - Jun; 6pm - 6am

Jun - Sep; 6am - 6pm

Jun - Sep; 6pm - 6am

Sep - Dec; 6am - 6pm

Sep - Dec; 6pm - 6am

Dec - Mar; 6am - 6pm

Dec - Mar; 6pm - 6am

US-Ne2: Mead - irrigated maize-soybean rotation site

US-Ne2: Mead - irrigated maize-soybean rotation site

DOI(s) for citing US-Ne2 data

Publication(s) for citing site characterization

Acknowledgments

Resources

US-Ne2: Mead - irrigated maize-soybean rotation site

Not Found

US-Ne2: Mead - irrigated maize-soybean rotation site

Regular Maintenance at US-Ne2

US-Ne2: Mead - irrigated maize-soybean rotation site

US-Ne2: Mead - irrigated maize-soybean rotation site

BADM for This Site

US-Ne2: Mead - irrigated maize-soybean rotation site

Wind Roses

Wind Speed (m/s)

Navigation

US-Ne2: Mead - irrigated maize-soybean rotation site

US-Ne2: Mead - irrigated maize-soybean rotation site

DOI(s) for citing US-Ne2 data

Publication(s) for citing site characterization

Acknowledgments

Resources

US-Ne2: Mead - irrigated maize-soybean rotation site

US-Ne2: Mead - irrigated maize-soybean rotation site

Regular Maintenance at US-Ne2

US-Ne2: Mead - irrigated maize-soybean rotation site

MODIS NDVI

PhenoCam Images and Derived Time Series Data

GeoNEX Data Products

NDVI: Normalized Difference Vegetation Index

NIRv Near-Infrared Reflectance of vegetation

DSR: Surface downward shortwave radiation

LST: Land Surface Temperature

Citation

Subset Data Citation:

Relevant Science Publication Citation:

US-Ne2: Mead - irrigated maize-soybean rotation site

US-Ne2: Mead - irrigated maize-soybean rotation site

BADM for This Site

US-Ne2: Mead - irrigated maize-soybean rotation site

Wind Roses

Wind Speed (m/s)

Navigation