Crop evapotranspiration estimation with FAO56: Past and future

Pereira, L. S.; Allen, Richard G.; Smith, Mark; Raes, Dirk

doi:10.1016/j.agwat.2014.07.031

Cited by 597 publications

(389 citation statements)

References 172 publications

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“…The ET o concept provides simple, reproducible means to estimate crop ET from weather-based ET o values and helped to enhance the transferability of the crop coefficients from one location to another. Therefore, the reference evapotranspiration concept has now been adopted to estimate ET from many different landscapes, such as forests (Hou et al 2010;Pereira et al 2015), wet lands (Drexler et al 2008;Zhou and Zhou 2009), turf grasses (Jia et al 2009;Wherley et al 2015), and urban areas (Pannkuk et al 2010;Sun et al 2012;Nouri et al 2013). Landscape coefficients (K L ) are the term commonly used to substitute crop coefficients (Kc) in estimating evaporation from landscapes other than field crops.…”

Section: Introductionmentioning

confidence: 99%

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Mapping reference evapotranspiration from meteorological satellite data and applications

Yao

Li²,

Juan

et al. 2017

Terr. Atmos. Ocean. Sci.

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Reference evapotranspiration (ET o ) is an agrometeorological variable widely used in hydrology and agriculture. The FAO-56 Penman-Monteith combination method (PM method) is a standard for computing ET o for water management. However, this scheme is limited to areas where climatic data with good quality are available. Maps of 10-day averaged ET o at 5 km × 5 km grid spacing for the Taiwan region were produced by multiplying pan evaporation (E pan ), derived from ground solar radiation (GSR) retrieved from satellite images using the Heliosat-3 method, by a fixed pan coefficient (K p ). Validation results indicated that the overall mean absolute percentage error (MAPE) and normalized root-mean-square deviation (NRMSD) were 6.2 and 7.7%, respectively, when compared with ET o computed by the PM method using spatially interpolated 10-day averaged daily maximum and minimum temperature datasets and GSR derived from satellite inputs. Land coefficient (K L ) values based on the derived ET o estimates and long term latent heat flux measurements, were determined for the following landscapes: Paddy rice (Oryza sativa), subtropical cypress forest (Chamaecyparis obtusa var. formosana and Chamaecyparis formosensis), warm-to-temperate mixed rainforest (Cryptocarya chinensis, Engelhardtia roxburghiana, Tutcheria shinkoensis, and Helicia formosana), and grass marsh (Brachiaria mutica and Phragmites australis). The determined land coefficients are indispensable to scale ET o in estimating regional evapotranspiration.

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Section: Introductionmentioning

confidence: 99%

“…(1) (Allen et al 1998), is now the standard method most commonly selected for ET o computation (Pereira et al 2015). …”

Section: Introductionmentioning

confidence: 99%

Mapping reference evapotranspiration from meteorological satellite data and applications

Yao

Li²,

Juan

et al. 2017

Terr. Atmos. Ocean. Sci.

View full text Add to dashboard Cite

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“…Hargreaves-Samani method (Pereira et al, 2015). In general, the TET models performed better when calibrated for local climatic conditions (Almorox and Grieser, 2015 Trajkovic (2005) reported that the PMT method had lower RMSE (0.27 mm day -1 ) than HS method (0.36 mm day -1 ) for monthly estimates.…”

Section: Methodsmentioning

confidence: 99%

“…In this study, use Hargreaves and Samani formulation HS Hargreaves and Samani, 1985;Hargreaves and Allen, 2003) and the PMT formulation for ET0 modelling. PMT equation, can produce acceptable results using only air temperature data, is based on the FAO56-PM formulation and retains many of the basis and philosophy of the combination model of Penman, considering a combination of net radiation and aerodynamic principles (Pereira et al, 2015).…”

Section: Temperature -Based Methods For Estimating Daily Reference Evmentioning

confidence: 99%

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Assessment of reference evapotranspiration and global solar radiation in Yucatán Peninsula Mexico

Quej¹,

Hugo²

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Evapotranspiration of urban landscapes in Los Angeles, California at the municipal scale

Litvak

Manago

Hogue

et al. 2017

Water Resources Research

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Evapotranspiration (ET), an essential process in biosphere‐atmosphere interactions, is highly uncertain in cities that maintain cultivated and irrigated landscapes. We estimated ET of irrigated landscapes in Los Angeles by combining empirical models of turfgrass ET and tree transpiration derived from in situ measurements with previously developed remotely sensed estimates of vegetation cover and ground‐based vegetation surveys. We modeled irrigated landscapes as a two‐component system comprised of trees and turfgrass to assess annual and spatial patterns of ET. Annual ET from vegetated landscapes (ETveg) was 1110 ± 53 mm/yr and ET from the whole city (vegetated and nonvegetated areas, ETland) was three times smaller, reflecting the fractional vegetation cover. With the exception of May and June, monthly ETland was significantly higher than predicted by the North American Land Data Assimilation System. ETveg was close to potential ET, indicating abundant irrigation inputs. Monthly averaged ETveg varied from 1.5 ± 0.1 mm/d (December) to 4.3 ± 0.2 mm/d (June). Turfgrass was responsible for ∼70% of ETveg. For trees, angiosperm species (71% of all trees) contributed over 90% to total tree transpiration, while coniferous and palm species made very small contributions. ETland was linearly correlated with median household income across the city, confirming the importance of social factors in determining spatial distribution of urban vegetation. These estimates have important implications for constraining the municipal water budget of Los Angeles and improving regional‐scale hydrologic models, as well as for developing water‐saving practices. The methodology used in this study is also transferable to other semiarid regions for quantification of urban landscape ET.

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Crop evapotranspiration estimation with FAO56: Past and future

Cited by 597 publications

References 172 publications

Mapping reference evapotranspiration from meteorological satellite data and applications

Mapping reference evapotranspiration from meteorological satellite data and applications

Assessment of reference evapotranspiration and global solar radiation in Yucatán Peninsula Mexico

Evapotranspiration of urban landscapes in Los Angeles, California at the municipal scale

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