An evaluation of illuminance measurements at Valladolid (Spain) |
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| Institution: | 1. Yunnan Key Laboratory for Palaeobiology, Yunnan University, Kunming 650091, China;2. MEC International Joint Laboratory for Palaeobiology & Palaeoenvironment, Yunnan University, Kunming 650091, China;3. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China;4. School of Geography, Geology and Environment, University of Leicester, Leicester LE1 7RH, UK;5. Centre for Ecology and Conservation (CEC), University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK;6. State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;7. CAS Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China |
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| Abstract: | Data used in this study are obtained from a solar radiation station sited at the Low Atmospheric Research Center, CIBA, at Valladolid (Spain). Measurements from different sensors have been collected and put together in order to analyze different types of correlations. Results from two data sets, corresponding to years 2003 and 2004, are shown in this work. Data are firstly divided into eight categories according to the clearness of the sky. Then each category is analyzed independently in order to get conclusions about the parameter of interest, the solar illuminance. Here, an attempt to model hourly global horizontal illumination data is made; the year 2003 is used for calibration and 2004 for validation of the model. |
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