Meyer, Richard and Torres Butron, Jesús and Marquard, Gunnar and Schwandt, Marko and Geuder, Norbert and Hoyer-Klick, Carsten and Lorenz, Elke and Hammer, Annette and Beyer, Hans Georg (2008) Combining Solar Irradiance Measurements and Various Satellite-Derived Products to a Site-Specific Best Estimage. In: Proc. of the 14th biennial SolarPACES Symposium. 14th biennial SolarPACES Symposium, 2008-03-04 - 2008-03-07, Las Vegas.
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Energy yields of concentrating solar thermal power plants depend strongly on the availability of beam irradiance. Direct solar irradiance is highly variable in space and time and thus, requires in-depth analysis of measurements with high quality, well tracked calibrations and approved quality control to achieve reliable results. Strong vari-ability from year to year makes it necessary to combine precision data, available from limited measurement peri-ods with long-term data, which should cover at least 10 years. For most places this may only be reached by ap-plication of historic satellite data. For sites around the Mediterranean region, Africa and the Mideast solar prod-ucts based on data from the Meteosat First Generation so far have been used. Since mid 2006 this satellite gen-eration is out of service and replaced by Meteosat Second Generation. Therefore, recent measurements can not be inter-compared to the satellite-series, which is used to retrieve long-term time-series. In this paper, a satellite-retrieval for beam irradiance from the new generation is introduced and inter-compared with data derived from the first generation satellite for an over-lapping 2 year time period. Applying more than one satellite data set has the further advantage to incorporate several independent data sets and thus strengthens credibility of the final result. A new procedure which combines the value of independent data sets is introduced: A quality-weighted average is produced depending on the individual uncertainties of each data set. By the help of long-term data the most representative climatological values are determined for the final best estimate, which is required for bank-able simulations of energy yields.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Combining Solar Irradiance Measurements and Various Satellite-Derived Products to a Site-Specific Best Estimage|
|Journal or Publication Title:||Proc. of the 14th biennial SolarPACES Symposium|
|In ISI Web of Science:||No|
|Keywords:||solar radiation, rotating shadowband radiometer, satellite data, measurement uncertainty, data fusion, direct normal or beam irradiance, Plataforma Solar de Almería -PSA, concentrating solar power - CSP.|
|Event Title:||14th biennial SolarPACES Symposium|
|Event Location:||Las Vegas|
|Event Type:||international Conference|
|Event Dates:||2008-03-04 - 2008-03-07|
|HGF - Research field:||Energy|
|HGF - Program:||Renewable Energies|
|HGF - Program Themes:||E MS - Systems analysis (old)|
|DLR - Research area:||Energy|
|DLR - Program:||E MS - Systems analysis|
|DLR - Research theme (Project):||E - Systemanalyse und Technikbewertung (old)|
|Institutes and Institutions:||Institute of Technical Thermodynamics > Solar Research|
Institute of Technical Thermodynamics > System Analysis and Technology Assessment
|Deposited By:||Carsten Hoyer-Klick|
|Deposited On:||23 Apr 2008|
|Last Modified:||27 Apr 2009 14:53|
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