@InProceedings{GasoWaltKili:2017:CoEnBa,
               author = "Gaso, Deborah Viviana and Walter-Shea, Elizabeth and Kilic, Ayse",
                title = "Comparison of energy balance values estimated with METRIC model 
                         with eddy covariance data for soybean and maize in irrigation and 
                         rainfed system",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "2423--2430",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "This study assessed the performance of the METRIC model for 
                         estimation of instantaneous actual evapotranspiration and energy 
                         balance components in dry and humid years for soybean and maize, 
                         under irrigated and rainfed environments in northeastern of 
                         Nebraska. Eddy covariance energy and mass fluxes from three 
                         AmeriFlux Nebraska were used to compare METRIC estimates during 
                         four growing seasons (twenty one scenes). Additionally, energy 
                         balance closure for each day was analyzed. The influence of the 
                         reference ET on estimates was investigated. Reference ET for 
                         grassland (ETo) and an alfalfa (ETr) were used in METRIC to 
                         estimate actual ET. Results indicate that energy balance closure 
                         for the estimated fluxes was poor. A linear regression between the 
                         sum of net radiation and soil flux (Rn + G) to the sum of sensible 
                         and latent heat fluxes (H + LE) yielded a slope of 0.75, intercept 
                         of 55.6 and R2 = 0.76. METRIC overestimated actual ET, but results 
                         differed depending on the reference ET used (RMSE = 1.66 mm d-1 
                         and 0.97 for ETr and ETo respectively). Estimation of sensible 
                         heat flux was poor (RMSE = 92 W m-2), while net radiation (Rn) and 
                         soil flux (G) were acceptably estimated (RMSE of 63 and 42 W m-2 
                         respectively). Errors in actual ET estimated for METRIC could be 
                         attributed to bias in actual ET measure with eddy covariance or 
                         reference ET used in METRIC. These results suggest that would be 
                         necessary study which reference ET is more appropriate to use 
                         within METRIC depending on the climatic zone.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59260",
             language = "en",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSLQHK",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSLQHK",
           targetfile = "59260.pdf",
                 type = "Uso e qualidade da {\'a}gua",
        urlaccessdate = "27 abr. 2024"
}