Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude
This work assessed the difference between daily reference evapotranspiration rate (ETo) calculated by the Penman-Monteith method (PM) with the complete set of meteorological variables and that obtained using only thermal records and a constant surface velocity (u2) of 2 m s-1 (PMxn),employing meteor...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
| Published: |
Facultad de Ciencias Agropecuarias
2022
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| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/34573 |
| _version_ | 1834859333686394880 |
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| author | de la Casa, Antonio Ovando, Gustavo Gabriel Díaz, Guillermo José |
| author_facet | de la Casa, Antonio Ovando, Gustavo Gabriel Díaz, Guillermo José |
| author_sort | de la Casa, Antonio |
| collection | Portal de Revistas |
| description | This work assessed the difference between daily reference evapotranspiration rate (ETo) calculated by the Penman-Monteith method (PM) with the complete set of meteorological variables and that obtained using only thermal records and a constant surface velocity (u2) of 2 m s-1 (PMxn),employing meteorological data from the weather stations Río Cuarto Aero (RC), Marcos Juárez Aero (MJ), Pilar Observatorio (PI) and Villa Dolores Aero (VD) between 1968 and 2018. The difference between ETo rates resulting from PM and PMxn increases linearly with the increase in u2, so that the use of PMxn should be restricted only to places and days with lower u2. The annual ETo values obtained with both procedures show a fluctuation between 1968 and 2018, with decreasing values until the 1990s, when rainfall shows maximum records in the region, and increasing since then. While the thermal amplitude (AT) in PI, MJ and RC shows a fluctuation analogous to ETo, in MJ u2also exhibits a fluctuation in phase with ETo and in VD only u2 presents the long-term variation concurrent to ETo. Solely RC showed an increasing linear trend of ETo. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-34573 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2022 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-345732023-04-27T18:08:33Z Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude Variación de la evapotranspiración de referencia entre 1968 y 2018 en Córdoba (Argentina)bajo la influencia de la velocidad del viento y la amplitud térmica de la Casa, Antonio Ovando, Gustavo Gabriel Díaz, Guillermo José trend Theil-Sen climatic change Penman-Monteith tendencia Theil-Sen Penman-Monteith cambio climático This work assessed the difference between daily reference evapotranspiration rate (ETo) calculated by the Penman-Monteith method (PM) with the complete set of meteorological variables and that obtained using only thermal records and a constant surface velocity (u2) of 2 m s-1 (PMxn),employing meteorological data from the weather stations Río Cuarto Aero (RC), Marcos Juárez Aero (MJ), Pilar Observatorio (PI) and Villa Dolores Aero (VD) between 1968 and 2018. The difference between ETo rates resulting from PM and PMxn increases linearly with the increase in u2, so that the use of PMxn should be restricted only to places and days with lower u2. The annual ETo values obtained with both procedures show a fluctuation between 1968 and 2018, with decreasing values until the 1990s, when rainfall shows maximum records in the region, and increasing since then. While the thermal amplitude (AT) in PI, MJ and RC shows a fluctuation analogous to ETo, in MJ u2also exhibits a fluctuation in phase with ETo and in VD only u2 presents the long-term variation concurrent to ETo. Solely RC showed an increasing linear trend of ETo. Se analizó la diferencia entre la tasa diaria de evapotranspiración de referencia (ETo), que el método de Penman-Monteith (PM) calcula con el conjunto completo de variables meteorológicas y la obtenida utilizando solo registros térmicos y una velocidad superficial (u2) constante de 2 m s-1 (PMxn), empleando información meteorológica de las estaciones Río Cuarto Aero (RC), Marcos Juárez Aero (MJ), Pilar Observatorio (PI) y Villa Dolores Aero (VD) entre 1968 y 2018. La diferencia entre las tasas de ETo que resultan de PM y PMxn se incrementa de manera lineal con el aumento de u2, de modo que el empleo de PMxn debería estar restringido solo a lugares y días de menor u2. Los valores anuales de ETo obtenidos con ambos procedimientos exhiben una fluctuación entre 1968 y 2018, con valores decrecientes hasta la década de 1990, cuando la lluvia acusa registros máximos en la región; y crecientes desde entonces. Mientras la amplitud térmica (AT) en PI, MJ y RC muestra una fluctuación análoga a ETo, en MJ también u2 exhibe una fluctuación en fase con ETo, y en VD solo u2 presenta la variación de largo plazo concurrente a ETo. Únicamente RC mostró una tendencia lineal creciente de ETo. Facultad de Ciencias Agropecuarias 2022-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/34573 10.31047/1668.298x.v39.n1.34573 AgriScientia; Vol. 39 No. 1 (2022); 29-47 AgriScientia; Vol. 39 Núm. 1 (2022); 29-47 1668-298X 10.31047/1668.298x.v39.n1 spa https://revistas.unc.edu.ar/index.php/agris/article/view/34573/38044 https://revistas.unc.edu.ar/index.php/agris/article/view/34573/41050 Derechos de autor 2022 Antonio de la Casa, Gustavo Gabriel Ovando, Guillermo José Díaz https://creativecommons.org/licenses/by-sa/4.0 |
| spellingShingle | trend Theil-Sen climatic change Penman-Monteith tendencia Theil-Sen Penman-Monteith cambio climático de la Casa, Antonio Ovando, Gustavo Gabriel Díaz, Guillermo José Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title | Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title_alt | Variación de la evapotranspiración de referencia entre 1968 y 2018 en Córdoba (Argentina)bajo la influencia de la velocidad del viento y la amplitud térmica |
| title_full | Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title_fullStr | Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title_full_unstemmed | Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title_short | Reference evapotranspiration variation between 1968 and 2018 in Córdoba (Argentina) under the influence of wind speed and thermal amplitude |
| title_sort | reference evapotranspiration variation between 1968 and 2018 in cordoba argentina under the influence of wind speed and thermal amplitude |
| topic | trend Theil-Sen climatic change Penman-Monteith tendencia Theil-Sen Penman-Monteith cambio climático |
| topic_facet | trend Theil-Sen climatic change Penman-Monteith tendencia Theil-Sen Penman-Monteith cambio climático |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/34573 |
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