<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bois, Benjamin</style></author><author><style face="normal" font="default" size="100%">Wald, Lucien</style></author><author><style face="normal" font="default" size="100%">Pieri, Philippe</style></author><author><style face="normal" font="default" size="100%">Van Leeuwen, Cornelis</style></author><author><style face="normal" font="default" size="100%">Commagnac, Loïc</style></author><author><style face="normal" font="default" size="100%">Chery, Philippe</style></author><author><style face="normal" font="default" size="100%">Christen, Maxime</style></author><author><style face="normal" font="default" size="100%">Gaudillère, Jean-Pierre</style></author><author><style face="normal" font="default" size="100%">Saur, Etienne</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Estimating spatial and temporal variations in solar radiation within Bordeaux winegrowing region using remotely sensed data</style></title><secondary-title><style face="normal" font="default" size="100%">Journal International des Sciences de la Vigne et du Vin</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Bordeaux vineyards</style></keyword><keyword><style  face="normal" font="default" size="100%">cartography</style></keyword><keyword><style  face="normal" font="default" size="100%">remote sensing</style></keyword><keyword><style  face="normal" font="default" size="100%">Solar radiation</style></keyword><keyword><style  face="normal" font="default" size="100%">Vitis vinifera</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://hal.archives-ouvertes.fr/hal-00363698</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">42</style></volume><pages><style face="normal" font="default" size="100%">15 - 25</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Aims: This paper presents a study solar radiation spatial and temporal variations in Bordeaux winegrowing area, for 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 Heliosat-2 algorithm. Daily data was interpolated using ordinary kriging to produce horizontal solar radiation maps at a 500 m resolution. Using a digital elevation model, high resolution daily solar radiation maps with terrain integration were then produced for the period 2001-2005, at a 50 m resolution. The long term (20 years) analysis of solar radiation at low spatial resolution (500 m) showed a west to east decreasing gradient within Bordeaux vineyards. Mean August-to-September daily irradiation values, on horizontal surface, were used to classify Bordeaux winegrowing areas in three zones: low, medium, and high solar radiation areas. This initial zoning was upscaled at 50 m resolution, applying a local correction ratio, based on 2001-2005 solar radiation on inclined surface analysis. Grapevine development and maturation potential of the different zones of appellation of origin of Bordeaux winegrowing area are discussed in relation with this zoning. 2 Conclusions: Solar radiation variability within Bordeaux winegrowing area is mainly governed by terrain slopes and orientations, which induce considerable variations within the eastern part of Bordeaux vineyards. Significance and impact of the study: Solar radiation has a major impact on vineyard water balance, grapevine development and berry ripening. However, irradiation data is seldom available in weather stations records. This paper underline the interest of high resolution cartography of solar radiation, using satellite sensing and terrain effect integration, for agroclimatic studies in viticulture.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue></record></records></xml>