This paper presents a model for short-term forecasting of solar potential on a horizontal surface. This study is carried out in to the context of valuing of energy production from photovoltaic solar sources in the Sahelian zone. In this study, Autoregressive Moving Average (ARMA) process is applied to predict global solar potential upon 24 hours ah...
Optical Solar Reflectors (OSR) are efficient thermal emitter glass tiles with a typical size of 40x40mm. They cover spacecraft radiator panels to reduce absorption of solar radiation and to dissipate internally generated heat into space. On modern high-power telecom satellites total radiator areas reach sizes of more than 20m². State-of-the-art pro...
The Shuttleworth and Wallace (SW) model with variable canopy resistance was evaluated to estimate evapotranspiration (ETv) from a drip-irrigated Merlot (Vitis vinifera L.) vineyard trained on a vertical shoot-positioned (VSP) system. This vineyard is located in the Talca Valley, Region del Maule, Chile (35°25′ LS; 71°32′ LW; 125 m a.s.l). The perfo...
Stabilization of expansive clays with sulfonated oil is an electrochemical process that develops over time and whose progress depends on the environmental conditions in the field. This phenomenon was studied by mean of an experimental analysis of three types of expansive clay treated with sulfonated oil. To simulate the environmental conditions, th...
We aimed to characterise the coincidence of yield variations with weather variables for major field crops using long-term datasets and reveal whether there are commonalities across the European agricultural regions. Long-term national and/or regional yield datasets were used from 14 European countries (total of 25 regions). Crops studied were sprin...
The lack of information on the ways seasonal drought modifies the CO2 exchange between Neotropical rainforest ecosystems and the atmosphere and the resulting carbon balance hinders our ability to precisely predict how these ecosystems will respond as global environmental changes force them to face increasingly contrasting conditions in the future. ...
Aims: This paper presents a study of spatial and temporal variations in solar radiation for the Bordeaux winegrowing region, over a 20 year period (1986-2005). Methods and results: Solar radiation data was retrieved from the HelioClim-1 database, elaborated from Meteosat satellite images, using the Hetiosat-2 algorithm. Daily data was interpolated ...
Solar radiation has a major impact on grapevine development and berry ripening. It has a large influence on photosynthetic activity, as well as on anthocyanin and aromatic compound synthesis in grape berries. Incoming and intercepted solar radiations are also key-variables in soil water balance, water fluxes and plant water stress. However, irradia...
Une connaissance approfondie de la variabilité spatiale du climat est essentielle en agronomie et agroforesterie, afin d’évaluer les capacités de production d’une région ou encore la pression phytosanitaire potentielle d’un ravageur. En viticulture, le climat conditionne largement la cinétique de développement de la vigne ainsi que la maturation du...
