Spatial Estimation of Sub-Hour Global Horizontal Irradiance Based on Official Observations and Remote SensorsReport as inadecuate




Spatial Estimation of Sub-Hour Global Horizontal Irradiance Based on Official Observations and Remote Sensors - Download this document for free, or read online. Document in PDF available to download.

ETSI Topography, Geodetics and Cartography, Universidad Politécnica de Madrid, Campus Sur UPM, Autovía de Valencia Km 7.5, E-28031 Madrid, Spain





*

Author to whom correspondence should be addressed.



Abstract This study was motivated by the need to improve densification of Global Horizontal Irradiance GHI observations, increasing the number of surface weather stations that observe it, using sensors with a sub-hour periodicity and examining the methods of spatial GHI estimation by interpolation with that periodicity in other locations. The aim of the present research project is to analyze the goodness of 15-minute GHI spatial estimations for five methods in the territory of Spain three geo-statistical interpolation methods, one deterministic method and the HelioSat2 method, which is based on satellite images. The research concludes that, when the work area has adequate station density, the best method for estimating GHI every 15 min is Regression Kriging interpolation using GHI estimated from satellite images as one of the input variables. On the contrary, when station density is low, the best method is estimating GHI directly from satellite images. A comparison between the GHI observed by volunteer stations and the estimation model applied concludes that 67% of the volunteer stations analyzed present values within the margin of error average of ±2 standard deviations. View Full-Text

Keywords: spatial interpolation; 15-minute Global Solar Radiation; volunteer stations spatial interpolation; 15-minute Global Solar Radiation; volunteer stations





Author: Federico-Vladimir Gutierrez-Corea * , Miguel-Angel Manso-Callejo, María-Pilar Moreno-Regidor and Jesús Velasco-Gómez

Source: http://mdpi.com/



DOWNLOAD PDF




Related documents