|
| LaThuid: | US-Ne3 |
| Site Name: | Mead - rainfed maize-soybean rotation site |
| Network: | AmeriFlux |
| Sec. Network(s): | Unknown |
| Latitude: | 41.1797 |
| Longitude: | -96.4397 |
| Elevation(m): | 363 |
| IGBP: | CRO |
| 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 near Mead, Nebraska. While the other two sites are equipped with irrigation systems, this site relies on rainfall. 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 initiation of the study in 2001, this site has been under no-till management. |
| Site Citation: | |
| Site Acknowledgment: | |
| Data Usage Note: | TBA |
| Primary Contact: | Shashi Verma |
| Curator: | Tom Boden |
| Anc Curator: | Tom Boden |
| Years Of Data: | 5 (Duration: 2001 - 2005) |
| Tower Status: | Active (2001 - Present) |
| Site image(s): | Image |
| VE Cutouts: | Max Zoom :: Mid 1 Zoom :: Mid 2 Zoom :: Min Zoom |
|
| Coordinator | Title | Collaborators | Topic |
| Sonia Seneviratne | Multi-scale land-atmosphere interactions | Seneviratne; Reichstein; Ciais; Buchmann; Stockli | Biophysical feedbacks, Drought effects |
| Andrew Richardson | Exploring relationships among carbon exchange, foliar nitrogen, and canopy albedo at global scales | Richardson; Ollinger; Martin; Hollinger | |
| Timothy W. Hilton | What is the spatial and temporal coherence of flux tower signals | Hilton; Davis; Ciais; Desai | Up-scaling, regional, process-oriented |
| Dennis Baldocchi | Measuring Terrestrial Biosphere Metabolism with a Global Flux Network | Baldocchi;Reichstein;Papale;Law | GlobalSummary |
| Christopher A. Williams | Carbon Dioxide and Water Flux Responses to Extreme Weather and Climate Anomalies | Williams; Munger; Hollinger; Stoy; Richardson; Schaefer; Stockli; Schwalm | Temporal variability; extremes |
| Christian Bernhofer | Analyzing long-term FLUXNET measurements for reliable ET values across ecosystems types and across climatic regions | Bernhofer; Koestner; Knohl; Lindroth; Grünwald; Riedel | H2O |
| Enrico Tomelleri | Calibration of a light use efficiency model using FLUXNET data | Tomelleri;Reichstein;Papale;Gorner | Up-scaling, global, data-oriented |
| Gitta Lasslop | Extended hyperbolic light response curve including VPD effects to derive GPP estimates mainly based on daytime data | Lasslop; Reichstein; Papale | |
| Andrew Jarvis | A data-based cross-site evaluation of (optimal) carbon gain and water use strategies as expressed in FLUXNET eddy covariance data | Jarvis;Stauch | C-H2O |
| ShiLong Piao | Effect of snow change on the C balance in various northern ecosystems | Piao;Ciais;Reichstein;Luyssaert | Snow effects; Boreal-Tundra |
| Philippe Ciais | What the eddy-covariance flux measurements tell us about prior errors in CO2-flux inversion schemes | Chevallier; Ciais; Maignan; Wang; Reichstein | |
| Martin Jung | Identifying environmental and biophysical controls of monthly carbon and water fluxes | Jung; Reichstein; Papale; Tomelleri | |
| Enrico Tomelleri | Climatic effects on the inter‐annual variability of net ecosystem fluxes of North America and Europe | Tomelleri; Migliavacca; Carvalhais | |
| Dario Papale | A new global spatialized estimate of NEP, GPP and TER and analysis of uncertainty and limiting factors using data driven models and eddy covariance measurements | Papale, Reichstein, Tomelleri | Up-scaling, global, data-oriented |
|
| Instruments | Brand/model | Levels/depths | Type | Frequency | Comment | Reference |
| (Other) | Eppley: PSP | | | | | |
| Anemometer | Gill: Solent R2 | 6 meters | sonic | | Li-Cor | |
| Barometer | Vaisala: PTB101B | | | | | Hank Loescher, February 2005 |
| Gas Analyzer | LI-COR: LI-6262 | | CO2/H2O, infrared | | closed path | Hank Loescher, February 2005 |
| LI-COR: LI-6262 | 3 and 6 meters | CO2/H2O, infrared | | | |
| LI-COR: LI-7500 | | | | | |
| Pyranometer | Eppley | 6 meters | | | | |
| Eppley: PSP | | | | | Hank Loescher, February 2005 |
| Quantum sensor | LI-COR: Li-190SA | | | | | Hank Loescher, February 2005 |
| Radiometer | Kipp & Zonen: CNR 1 | | net | | | Hank Loescher, February 2005 |
| REBS: Q*7.1 | | net | | | Hank Loescher, February 2005 |
| Rain gauge | Texas Electronics: TE525 | | tipping bucket | | | |
| Soil heat flux plates | REBS | 6 meters | | | | |
| Temperature and relative humidity probe | Vaisala: HMP50Y | 3 and 6 meters | | | | Hank Loescher, February 2005 |
| Vaisala: HMP50Y | 6 meters | | | | Hank Loescher, February 2005 |
| Thermistor | | 2, 4, 6, 10 cm, also in and between rows | | | | |
| Wind Speed Sensor | MetOne: 010C | 3 and 6 meters | | | | |
| Wind Vane | MetOne: 010C | 6 meters | | | | |
|
| Bibliography |
| Simbahan, G.C., A. Dobermann, P. Goovaerts, J.L. Ping, and M.L. Haddix. 2006. Fine-resolution mapping of soil organic carbon based on multivariate secondary data. Geoderma 132, 471-489. |
| Verma, S.B., A. Dobermann, K.G. Cassman, D.T. Walters, J.M.H. Knops, T.J. Arkebauer, A.E. Suyker, G.G. Burba, B. Amos, H.S. Yang, D. Ginting, K.G. Hubbard, A.A. Gitelson, and E.A. Walter-Shea. 2005. Annual carbon dioxide exchange in irrigated and rainfed |
| G. C. Simbahan; A. Dobermann; J. L. Ping. 2004. Screening yield monitor data improves grain yield mapsAgronomy Journal. 96, 1091-1102. |
| A. D. Richardson; D. Y. Hollinger; G. G. Burba; K. J. Davis; L. B. Flanagan; G. G. Katul; J. W. Munger; D. M. Ricciuto; P. C. Stoy; A. E. Suyker; S. B. Verma; S. C. Wofsy. 2006. A multi-site analysis of random error in tower-based measurements of carbon and energy fluxesAgricultural and Forest Meteorology. 136:1-2, 1-18. |
| Rezaul Mahmood; Kenneth G. Hubbard. 2005. Assessing bias in evapotranspiration and soil moisture estimates due to the use of modeled solar radiation and dew point temperature dataAgricultural and Forest Meteorology. 130:1-2, 71-84. |
| Andrew E. Suyker; Shashi B. Verma; George G. Burba; Timothy J. Arkebauer. 2005. Gross primary production and ecosystem respiration of irrigated maize and irrigated soybean during a growing seasonAgricultural and Forest Meteorology. 131, 180-190. |
| D. Ginting; D. Eghball. 2005. Nitrous oxide emission from no-till irrigated corn: temporal fluctuation and wheel traffic effectsSoil Science Society of America Journal. 69:May-June, 915-924. |
| J. L. Ping; A. Dobermann. 2005. Processing of yield map dataPrecision Agriculture. 6, 193-212. |
| B. T. Amos; T. J. Arkebauer, J. W. Doran. 2005. Soil surface fluxes of greenhouse gases in an irrigated maize-based agroecosystemSoil Science Society of America Journal. 387-395. |
| A. E. Suyker; S. B. Verma; G. G. Burba; T. J. Arkebauer; D. T. Walters; K. G. Hubbard. 2004. Growing season carbon dioxide exchange in irrigated and rainfed maizeAgricultural and Forest Meteorology. 124:1-2, 1-13. |
| H. S. Yang; A. Dobermann; J. L. Lindquist; D. T. Walters; T. J. Arkebauer; K. G. Cassman. 2004. Hybrid-maize - a maize simulation model that combines two crop modeling approachesField Crops Research. 87, 131-154. |
| A. Vina; A. A. Gitelson; D. C. Rundquist; G. Keydan; B. Leavitt; J. Schepers. 2004. Monitoring maize (Zea mays L.) phenology with remote sensingAgronomy Journal. 96:July-August, 1139-1147. |
| A. Vina; G. M. Henebry; A. A. Gitelson. 2004. Satellite monitoring of vegetation dynamics: Sensitivity enhancement by the wide dynamic range vegetation indexGeophysical Research Letters. 31:doi: 10.1029/2003GL019034, L04503 (pages 1-4). |
| A. A. Gitelson. 2004. Wide dynamic range vegetation index for remote quantification of biophysical characteristics of vegetationJournal of Plant Physiology. 161:2, 165-173. |
| A. Dobermann; J. L. Ping; V. I. Adamchuk; G. C. Simbahan; R. B. Ferguson. 2003. Classification of crop yield variability in irrigated production fieldsAgronomy Journal. 95, 1105-1120. |
| J. L. Ping; A. Dobermann. 2003. Creating spatially contiguous yield classes for site-specific managementAgronomy Journal. 95, 1121-1131. |
| K. G. Cassman; A. Dobermann; D. T. Walters; H. S. Yang. 2003. Meeting cereal demand while protecting natural resources and improving environmental qualityAnnual Review Environment and Resources. 315-358. |
| A. A. Gitelson; S. B. Verma; D. C. Rundquist; G. Keydan; B. Leavitt; T. J. Arkebauer; G. G. Burba; A. E. Suyker. 2003. Novel techniques for remote estimation of carbon dioxide flux in maizeGeophysical Research Letters. 30:9, 1486, doi: 10. 1029/2002/GL016543. |
| A. A. Gitelson; A. Vina; T. J. Arkebauer; D. C. Rundquiwt; G. Keydan; B. Leavitt. 2003. Remote estimation of leaf area index and green leaf biomass in maize canopiesGeophysical Research Letters. 30:5, 1248, doi: 10. 1029/2002GL016450. |