Comparison of satellite-derived potential evapotranspiration (MOD16A3) with in situ measurements from quintana roo, Mexico

Alvarado-Barrientos, M. Susana; Medina, Ismael Orozco

doi:10.1109/cncg.2016.7985078

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…Discrepancies have been found when comparing the classification of land use by the MODIS product with that made in the field [49], in contrast with this study, in which the classifications coincide both for shrublands in EC3, EC4, and EC5 and for crops in EC1 and EC2; however, MOD16 considers constant the properties for the same biome, so the phenological and structural differences of the shrubs are not captured, having an impact on the ET estimates. It has been found that when comparing MOD16 to estimates of reference evapotranspiration (ETo) in southeastern Mexico, in areas of higher humidity, there is a 0.21 coefficient of correlation, suggesting that it is necessary to parameterize the algorithm with locally derived data [50]; even though higher correlations were found in this study, it is necessary to obtain local phenology measurements, associate them with the national land cover classification, and then integrate them in MOD16.…”

Section: Discussionmentioning

confidence: 68%

“…The performance of the MOD16 estimation model has been validated in different ecosystems of the USA [3,43], and this model attracted interest for its use in other regions of the world [7,[44][45][46][47][48][49]. However, in Mexico it has been little explored, except for some evaluations of the potential ET product in concrete areas [50]. Therefore, the main objective of this research was to evaluate MOD16 by comparing its estimations with measurements of ET through eddy covariance (EC), to assess the possibility of using MOD16 for decision-making in questions related to the hydrological cycle.…”

Section: Introductionmentioning

confidence: 99%

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Performance Assessment of MOD16 in Evapotranspiration Evaluation in Northwestern Mexico

Aguilar

Flores

Crespo

et al. 2018

Water

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Evapotranspiration (ET) is the second largest component of the water cycle in arid and semiarid environments, and, in fact, more than 60% of the precipitation on earth is returned to the atmosphere through it. MOD16 represents an operational source of ET estimates with adequate spatial resolution for several applications, such as water resources planning, at a regional scale. However, the use of these estimates in routine applications will require MOD16 evaluation and validation using accurate ground-based measurements. The main objective of this study was to evaluate the performance of the MOD16A2 product by comparing it with eddy covariance (EC) systems. Additional objectives were the analysis of the limitations, uncertainties, and possible improvements of the MOD16-estimated ET. The EC measurements were acquired for five sites and for a variety of land covers in northwestern Mexico. The indicators used for the comparison were: root mean square error (RMSE), bias (BIAS), concordance index (d), and determination coefficient (R 2) of the correlation, comparing measured and modelled ET. The best performance was observed in Rayón (RMSE = 0.77 mm•day −1 , BIAS = −0.46 mm•day −1 , d = 0.88, and R 2 = 0.86); El Mogor and La Paz showed errors and coefficients of determination comparable to each other (RMSE = 0.39 mm•day −1 , BIAS = −0.04 mm•day −1 , R 2 = 0.46 and RMSE = 0.42 mm•day −1 , BIAS = −0.18 mm•day −1 , R 2 = 0.45, respectively). In most cases, MOD16 underestimated the ET values.

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Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Performance Assessment of MOD16 in Evapotranspiration Evaluation in Northwestern Mexico

Aguilar

Flores

Crespo

et al. 2018

Water

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Determining satellite-based evapotranspiration product and identifying relationship with other observed data in Punjab, Pakistan

Amin

Khan

Hassan

et al. 2022

Environ Dev Sustain

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Evaluación del efecto de distintas aproximaciones de la radiación en la estimación de la evapotranspiración usando el modelo FAO Penman-Monteith

et al. 2019

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La evapotranspiración es uno de los procesos que mayor importancia tienen en la correcta cuantificación de la disponibilidad hídrica, pero es de los más difíciles de estimar del ciclo hidrológico en regiones con escasa información meteorológica. Una alternativa que se ha popularizado para resolver la problemática anterior es el uso de productos de satélite con estimaciones de la evapotranspiración a escala regional. Sin embargo, estos deben ser validados con información de campo adecuada antes de su aplicación regional, la cual es casi inexistente en latitudes tropicales. Por ello, esta investigación propone una mejora a la ecuación de la FAO Penman-Monteith, al introducir variabilidad espacial y temporal de la radiación neta (Rn) a través del algoritmo Viewshed. Los resultados muestran una mejora del 1.1% al comparar los resultados de la evapotranspiración de referencia con las estimaciones provenientes del producto satelital MOD16A3 y usando la forma tradicional de calcular la Rn.

show abstract

Comparison of satellite-derived potential evapotranspiration (MOD16A3) with in situ measurements from quintana roo, Mexico

Cited by 3 publications

References 16 publications

Performance Assessment of MOD16 in Evapotranspiration Evaluation in Northwestern Mexico

Performance Assessment of MOD16 in Evapotranspiration Evaluation in Northwestern Mexico

Determining satellite-based evapotranspiration product and identifying relationship with other observed data in Punjab, Pakistan

Evaluación del efecto de distintas aproximaciones de la radiación en la estimación de la evapotranspiración usando el modelo FAO Penman-Monteith

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