Simplified model for the calculation of degrees-day with variable time scale
In this paper, the authors propose a simplified model for the calculation of degree days for different time scales and variable base temperature. It is summarized in six expressions that result in a simple, compact and easy to program model in any spreadsheet. Its main advantage lies in the integrat...
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Universidad Central "Marta Abreu" de Las Villas
2021
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oai:doaj.org-article:78f018ec9c8041bf9f7d9bb9d8d034d62021-11-16T15:03:46ZSimplified model for the calculation of degrees-day with variable time scale0253-57852072-2001https://doaj.org/article/78f018ec9c8041bf9f7d9bb9d8d034d62021-04-01T00:00:00Zhttp://cagricola.uclv.edu.cu/index.php/es/volumen-48-2021/no-2-abr-jun-2021/1295-modelo-simplificado-para-el-calculo-de-grados-dia-con-escala-de-tiempo-variablehttps://doaj.org/toc/0253-5785https://doaj.org/toc/2072-2001In this paper, the authors propose a simplified model for the calculation of degree days for different time scales and variable base temperature. It is summarized in six expressions that result in a simple, compact and easy to program model in any spreadsheet. Its main advantage lies in the integrated calculation of degree days for daily, monthly and annual time scales, which makes it attractive for its application in strategic sectors of the economy such as the electro-energy, construction and agriculture sectors. It is applicable to regions for which the values of the regression coefficients necessary for the determination of the equivalent temperature (parameter defined by the authors, valid for a given geographical region) have been previously fixed. These coefficients have been determined for the areas surrounding the Yabú meteorological station, belonging to the province of Villa Clara, for the territory covered by this province and for the whole territory of the Cuban archipelago. Two versions of the model are presented, a base version and an extended one; the first one uses as input variables the mean temperature, the mean minimum temperature and the mean maximum temperature, according to the time scale to be considered, the second one allows its application by introducing the mean temperature as the only input variable. The difference in accuracy between these versions is not significant, so both are recommendedOvidio Rodríguez SantosOscar Cruz FonticiellaAlfredo Leyva CéspedesUniversidad Central "Marta Abreu" de Las Villasarticleagricultureenergy managementthermal integralthermal timeheat unitsAgriculture (General)S1-972Plant ecologyQK900-989ESCentro Agrícola, Vol 48, Iss 2, Pp 57-65 (2021) |
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agriculture energy management thermal integral thermal time heat units Agriculture (General) S1-972 Plant ecology QK900-989 |
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agriculture energy management thermal integral thermal time heat units Agriculture (General) S1-972 Plant ecology QK900-989 Ovidio Rodríguez Santos Oscar Cruz Fonticiella Alfredo Leyva Céspedes Simplified model for the calculation of degrees-day with variable time scale |
description |
In this paper, the authors propose a simplified model for the calculation of degree days for different time scales and variable base temperature. It is summarized in six expressions that result in a simple, compact and easy to program model in any spreadsheet. Its main advantage lies in the integrated calculation of degree days for daily, monthly and annual time scales, which makes it attractive for its application in strategic sectors of the economy such as the electro-energy, construction and agriculture sectors. It is applicable to regions for which the values of the regression coefficients necessary for the determination of the equivalent temperature (parameter defined by the authors, valid for a given geographical region) have been previously fixed. These coefficients have been determined for the areas surrounding the Yabú meteorological station, belonging to the province of Villa Clara, for the territory covered by this province and for the whole territory of the Cuban archipelago. Two versions of the model are presented, a base version and an extended one; the first one uses as input variables the mean temperature, the mean minimum temperature and the mean maximum temperature, according to the time scale to be considered, the second one allows its application by introducing the mean temperature as the only input variable. The difference in accuracy between these versions is not significant, so both are recommended |
format |
article |
author |
Ovidio Rodríguez Santos Oscar Cruz Fonticiella Alfredo Leyva Céspedes |
author_facet |
Ovidio Rodríguez Santos Oscar Cruz Fonticiella Alfredo Leyva Céspedes |
author_sort |
Ovidio Rodríguez Santos |
title |
Simplified model for the calculation of degrees-day with variable time scale |
title_short |
Simplified model for the calculation of degrees-day with variable time scale |
title_full |
Simplified model for the calculation of degrees-day with variable time scale |
title_fullStr |
Simplified model for the calculation of degrees-day with variable time scale |
title_full_unstemmed |
Simplified model for the calculation of degrees-day with variable time scale |
title_sort |
simplified model for the calculation of degrees-day with variable time scale |
publisher |
Universidad Central "Marta Abreu" de Las Villas |
publishDate |
2021 |
url |
https://doaj.org/article/78f018ec9c8041bf9f7d9bb9d8d034d6 |
work_keys_str_mv |
AT ovidiorodriguezsantos simplifiedmodelforthecalculationofdegreesdaywithvariabletimescale AT oscarcruzfonticiella simplifiedmodelforthecalculationofdegreesdaywithvariabletimescale AT alfredoleyvacespedes simplifiedmodelforthecalculationofdegreesdaywithvariabletimescale |
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