Lisímetros de pesagem para medidas de evapotranspiração em estufa
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.15809/irriga.2017v22n4p715-722 http://hdl.handle.net/11449/228526 |
Resumo: | Weighing lysimeters are used for the purpose of determining water balance components, especially for evapotranspiration and evaporation. Within all know methods, lysimeter is considered the most accurate, but in order to obtain reliable data, their calibration must be performed in situ. The objective of this work was to calibrate 12 lysimeters to verify measurements’ linearity and the existence of hysteresis, besides evaluating the equipment's accuracy. The lysimeters had diameter and depth of 30 cm, with one load cell in each lysimeter for determination of mass variation, connected to a data acquisition and storage system. The calibration was performed by comparing the load and unload know mass (kg) with the load cell reading (mV). The calibration data were linear, presenting a significant mass correlation in response to voltage. The angular and linear coefficients varied from 762.78 to 1187.8 kg mV-1 and -499.99 to -798.00 kg, respectively. The absolute error ranged from 0.03 to 0.54, showing a high accuracy of the lysimeters. The accuracy for mass variation was 0.79 mm and the Willmott concordance index was 0.99, showing the good agreement between the estimated and observed values. It can be concluded that lysimeters are suitable for crop evapotranspiration determination. |
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Lisímetros de pesagem para medidas de evapotranspiração em estufaWeighing lysimeters for greenhouse evapotraspiration measurementsLisimetryLoad cellWater balanceWeighing lysimeters are used for the purpose of determining water balance components, especially for evapotranspiration and evaporation. Within all know methods, lysimeter is considered the most accurate, but in order to obtain reliable data, their calibration must be performed in situ. The objective of this work was to calibrate 12 lysimeters to verify measurements’ linearity and the existence of hysteresis, besides evaluating the equipment's accuracy. The lysimeters had diameter and depth of 30 cm, with one load cell in each lysimeter for determination of mass variation, connected to a data acquisition and storage system. The calibration was performed by comparing the load and unload know mass (kg) with the load cell reading (mV). The calibration data were linear, presenting a significant mass correlation in response to voltage. The angular and linear coefficients varied from 762.78 to 1187.8 kg mV-1 and -499.99 to -798.00 kg, respectively. The absolute error ranged from 0.03 to 0.54, showing a high accuracy of the lysimeters. The accuracy for mass variation was 0.79 mm and the Willmott concordance index was 0.99, showing the good agreement between the estimated and observed values. It can be concluded that lysimeters are suitable for crop evapotranspiration determination.Departamento de Engenharia Rural Universidade Estadual Paulista - Campus Jaboticabal, Via de Acesso Professor Paulo Donato Castelane, Vila IndustrialDepartamento de Engenharia Rural Universidade Estadual Paulista - Campus Jaboticabal, Via de Acesso Professor Paulo Donato Castelane, Vila IndustrialUniversidade Estadual Paulista (UNESP)Martins, Izabela Paiva [UNESP]de Faria, Rogério Teixeira [UNESP]Palaretti, Luiz Fabiano [UNESP]Dalri, Alexandre Barcellos [UNESP]Oliverio, Carolina [UNESP]Libardi, Luis Guilherme Polizel [UNESP]2022-04-29T08:27:16Z2022-04-29T08:27:16Z2017-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article715-722http://dx.doi.org/10.15809/irriga.2017v22n4p715-722IRRIGA, v. 22, n. 4, p. 715-722, 2017.1808-37651413-7895http://hdl.handle.net/11449/22852610.15809/irriga.2017v22n4p715-7222-s2.0-85044222395Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIRRIGAinfo:eu-repo/semantics/openAccess2024-06-06T15:18:17Zoai:repositorio.unesp.br:11449/228526Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-06T15:18:17Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Lisímetros de pesagem para medidas de evapotranspiração em estufa Weighing lysimeters for greenhouse evapotraspiration measurements |
title |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
spellingShingle |
Lisímetros de pesagem para medidas de evapotranspiração em estufa Martins, Izabela Paiva [UNESP] Lisimetry Load cell Water balance |
title_short |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
title_full |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
title_fullStr |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
title_full_unstemmed |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
title_sort |
Lisímetros de pesagem para medidas de evapotranspiração em estufa |
author |
Martins, Izabela Paiva [UNESP] |
author_facet |
Martins, Izabela Paiva [UNESP] de Faria, Rogério Teixeira [UNESP] Palaretti, Luiz Fabiano [UNESP] Dalri, Alexandre Barcellos [UNESP] Oliverio, Carolina [UNESP] Libardi, Luis Guilherme Polizel [UNESP] |
author_role |
author |
author2 |
de Faria, Rogério Teixeira [UNESP] Palaretti, Luiz Fabiano [UNESP] Dalri, Alexandre Barcellos [UNESP] Oliverio, Carolina [UNESP] Libardi, Luis Guilherme Polizel [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Martins, Izabela Paiva [UNESP] de Faria, Rogério Teixeira [UNESP] Palaretti, Luiz Fabiano [UNESP] Dalri, Alexandre Barcellos [UNESP] Oliverio, Carolina [UNESP] Libardi, Luis Guilherme Polizel [UNESP] |
dc.subject.por.fl_str_mv |
Lisimetry Load cell Water balance |
topic |
Lisimetry Load cell Water balance |
description |
Weighing lysimeters are used for the purpose of determining water balance components, especially for evapotranspiration and evaporation. Within all know methods, lysimeter is considered the most accurate, but in order to obtain reliable data, their calibration must be performed in situ. The objective of this work was to calibrate 12 lysimeters to verify measurements’ linearity and the existence of hysteresis, besides evaluating the equipment's accuracy. The lysimeters had diameter and depth of 30 cm, with one load cell in each lysimeter for determination of mass variation, connected to a data acquisition and storage system. The calibration was performed by comparing the load and unload know mass (kg) with the load cell reading (mV). The calibration data were linear, presenting a significant mass correlation in response to voltage. The angular and linear coefficients varied from 762.78 to 1187.8 kg mV-1 and -499.99 to -798.00 kg, respectively. The absolute error ranged from 0.03 to 0.54, showing a high accuracy of the lysimeters. The accuracy for mass variation was 0.79 mm and the Willmott concordance index was 0.99, showing the good agreement between the estimated and observed values. It can be concluded that lysimeters are suitable for crop evapotranspiration determination. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 2022-04-29T08:27:16Z 2022-04-29T08:27:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.15809/irriga.2017v22n4p715-722 IRRIGA, v. 22, n. 4, p. 715-722, 2017. 1808-3765 1413-7895 http://hdl.handle.net/11449/228526 10.15809/irriga.2017v22n4p715-722 2-s2.0-85044222395 |
url |
http://dx.doi.org/10.15809/irriga.2017v22n4p715-722 http://hdl.handle.net/11449/228526 |
identifier_str_mv |
IRRIGA, v. 22, n. 4, p. 715-722, 2017. 1808-3765 1413-7895 10.15809/irriga.2017v22n4p715-722 2-s2.0-85044222395 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
IRRIGA |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
715-722 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045324397215744 |