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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/10/2022 |
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Data da última atualização: |
19/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALTHOFF, D.; RODRIGUES, L. N. |
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Afiliação: |
DANIEL ALTHOFF; LINEU NEIVA RODRIGUES, CPAC. |
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Título: |
Improvement of reference crop evapotranspiration estimates using limited data for the Brazilian Cerrado. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Scientia Agricola, v. 80, e20210229, 2023. |
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Páginas: |
11 p. |
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DOI: |
http://doi.org/10.1590/1678-992X-2021-0229 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Evapotranspiration (ET) is a key component of the hydrological cycle. Therefore, adequately estimating it is crucial to improving water resource planning and management. One of the most affordable methods of estimating ET is first to estimate reference crop evapotranspiration (ETo) and later associate it to crop and soil coefficients. The FAO Kc-ETo approach can be used only when ETo is computed with the FAO Penman-Monteith equation. However, low data availability may restict the equations used to estimate ETo. In this study, we assess and calibrate common methods used to estimate ETo under such conditions of limited data availability. Based on the annual calibration, the Makkink (NSE = 0.85) outperformed the Priestley-Taylor (NSE = 0.73), Hargreaves-Samani (NSE = 0.56), and Penman-Monteith temperature approach (NSE = 0.58). The seasonal calibration of parameters showed no significant improvement to the methods assessed (ΔNSE ≤ 0.01), except for the Priestley-Taylor (ΔNSE = 0.06). The performance of temperature-based equations was particularly limited due to the performance of the equation adopted to estimate global solar radiation. Thus, improving the representation of global solar radiation for limited data availability can also play a key role in improving ETo prediction. Keywords: Penman-Monteith temperature approach, tropical savannah, estimating dew-point temperature, average wind speed |
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Thesagro: |
Evapotranspiração; Orvalho; Temperatura; Vento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147758/1/Lineu-Improvement-of-reference-crop-evapotranspiration-estimates-using-limited-ABERTO.pdf
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Marc: |
LEADER 02061naa a2200205 a 4500
001 2147758
005 2023-12-19
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.1590/1678-992X-2021-0229$2DOI
100 1 $aALTHOFF, D.
245 $aImprovement of reference crop evapotranspiration estimates using limited data for the Brazilian Cerrado.$h[electronic resource]
260 $c2023
300 $a11 p.
520 $aABSTRACT: Evapotranspiration (ET) is a key component of the hydrological cycle. Therefore, adequately estimating it is crucial to improving water resource planning and management. One of the most affordable methods of estimating ET is first to estimate reference crop evapotranspiration (ETo) and later associate it to crop and soil coefficients. The FAO Kc-ETo approach can be used only when ETo is computed with the FAO Penman-Monteith equation. However, low data availability may restict the equations used to estimate ETo. In this study, we assess and calibrate common methods used to estimate ETo under such conditions of limited data availability. Based on the annual calibration, the Makkink (NSE = 0.85) outperformed the Priestley-Taylor (NSE = 0.73), Hargreaves-Samani (NSE = 0.56), and Penman-Monteith temperature approach (NSE = 0.58). The seasonal calibration of parameters showed no significant improvement to the methods assessed (ΔNSE ≤ 0.01), except for the Priestley-Taylor (ΔNSE = 0.06). The performance of temperature-based equations was particularly limited due to the performance of the equation adopted to estimate global solar radiation. Thus, improving the representation of global solar radiation for limited data availability can also play a key role in improving ETo prediction. Keywords: Penman-Monteith temperature approach, tropical savannah, estimating dew-point temperature, average wind speed
650 $aEvapotranspiração
650 $aOrvalho
650 $aTemperatura
650 $aVento
700 1 $aRODRIGUES, L. N.
773 $tScientia Agricola$gv. 80, e20210229, 2023.
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