The importance of agrometeorological models and their application to improve cultivation techniques are growing day after day. This is mainly due to the need of an integrated agriculture, in which expensive and polluting input has to be substituted by more sustainable agronomic practices. Unfortunately, weather data used as input for these models are not always available, so methods to estimate the missing data have high importance. Starting from these considerations, some models to calculate hourly temperature from maximum and minimum daily values were used to simulate thermal pattern during seven different years (from 1994 to 2000). The obtained results were first compared with the measured values of hourly temperature to control the accuracy of the models. Then, calculated temperatures were used as input of an agrometeorological model simulating the development of Plasmopara viticola on grapevine (Vitis vinifera). Simulations, using measured and predicted temperatures, were compared to evaluate the possibility of applying temperature models to generate input data of biological systems. The Parton model showed the higher accuracy, while the Ephrath, Wcalc and Goudriaan models presented a decreasing precision in the simulation of thermal pattern. However, all the methods allowed a good substitution of measured temperatures for the application of agrometeorological models.
Estimation of hourly temperature for the application of agrometeorological models / Cappugi, A; Maracchi, G; Orlandini, S. - In: IDőJÁRÁS. - ISSN 0324-6329. - STAMPA. - 105:(2001), pp. 81-91.
Estimation of hourly temperature for the application of agrometeorological models
MARACCHI, GIAMPIERO;ORLANDINI, SIMONE
2001
Abstract
The importance of agrometeorological models and their application to improve cultivation techniques are growing day after day. This is mainly due to the need of an integrated agriculture, in which expensive and polluting input has to be substituted by more sustainable agronomic practices. Unfortunately, weather data used as input for these models are not always available, so methods to estimate the missing data have high importance. Starting from these considerations, some models to calculate hourly temperature from maximum and minimum daily values were used to simulate thermal pattern during seven different years (from 1994 to 2000). The obtained results were first compared with the measured values of hourly temperature to control the accuracy of the models. Then, calculated temperatures were used as input of an agrometeorological model simulating the development of Plasmopara viticola on grapevine (Vitis vinifera). Simulations, using measured and predicted temperatures, were compared to evaluate the possibility of applying temperature models to generate input data of biological systems. The Parton model showed the higher accuracy, while the Ephrath, Wcalc and Goudriaan models presented a decreasing precision in the simulation of thermal pattern. However, all the methods allowed a good substitution of measured temperatures for the application of agrometeorological models.File | Dimensione | Formato | |
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