Comparison to maps derived from satellite data

Differences between global solar radiation interpolated from ground level measurements (Fig. 2 values) and published in [7] were shown on Fig. 6. As it is observed, a non-homogeneous distribution of …

Ordinary kriging vs residual kriging

The comparison of the ordinary and the residual kriging models results, in terms of the validation dataset, shows several interesting features. Residual kriging provides better estimates for all the months, …

SOLIS Clear Sky Model

The SOLIS clear sky model [3] uses the radiative transfer model libRadtran [4] to calculate input parameters for a fitting function called the modified Lambert-Beer (MLB) relation. For this, only …

Data transformation

In this study the generation of the variable which is going to be used to forecast future values of half daily solar global radiation is done taking into account gaussian …

MM5 Setup

The spatial configuration of the MM5 used in this work consisted in five nested domains and twenty four unevenly spaced sigma levels. The domains has an horizontal resolution of 71, …

Analysis of the incoming solar radiation and other significant. parameters to estimate the solar resource at eight sites in Galicia (NW Spain)

Alberto Pettazzi, Jose Antonio Souto Gonzalez* Department of Chemical Engineering, University of Santiago de Compostela, Lope Gomez de Marzoa St., Campus Sur. 15782 Santiago de Compostela, SpainCorresponding author, ia. souto@,usc. …

Solar Climate of Azores:. results of monitoring at Faial and Terceira islands

Ricardo Aguiar *, Antonio Rocha e Silva and Ricardo Coelho INETI, Department of Renewable EnergiesLisbon, Portugal * Tel: +351 210 924 602, E-Mail: ricardo. aguiar@ineti. pt 1. Introduction The North …

Yearly Sum and Frequency distribution of DNI

The accuracy of the proposed method to derive DNI was evaluated for the year 2005 for six stations of the Spanish Meteorological Service INM, see table 1. The evaluation was …

Artificial Neural Networks

Predictive methods can be divided fundamentally in Numerical Weather Prediction (NWP) models and statistical techniques. Time series prediction belongs to statistical techniques group, which is based on obtaining future values …

Mapping Solar Radiation in Southern Spain using residual kriging

H. ALSAMAMRA*, J. A. RUIZ-ARIAS, D. POZO-VAZQUEZ and J. TOVAR-PESCADOR MATRAS Group, Department of Physics, Campus Lagunillas, 23071, University of Jaen, Spain* Corresponding Author, husain@,uiaen. es Abstract This study presents …

Material and methods

The meteorological and climatic features of Galicia are monitored by a network made up by 93 weather stations, located all over the region covering the usual meteorological parameters. Ten - …

Management and Exploitation of Solar Resource Knowledge

C. Hoyer-Klick1*, H. G. Beyer2, D. Dumortier3, M. Schroedter-Homscheidt4, L. Wald5, M.Martinoli6, C. Schilings1, B. Gschwind5, L. Menard5, E. Gaboardi6, L. Ramirez-Santigosa7, J.Polo7, T. Cebecauer8,T. Huld8, M. Suri8, M. de …

First Steps in the Cross-Comparison of Solar Resource. Spatial Products in Europe

M. Suri1*, J. Remund2, T. Cebecauer1, D. Dumortier3, L. Wald4, T. Huld1 and P. Blanc4 1 European Commission, Joint Research Centre, Institute for Energy, Renewable Energies Unit, via E. Fermi …

Modeling and Analysis of Chinese Exposure to Solar Radiation Based on the Available Meteorological Data at CMA, China

Yu Qiang1* and Wang Zhifeng2 1,2 Institute of Electrical Engineering, CAS P. O.BOX 2703 Beijing 100190, China Corresponding Author, yuqiang1984@mail. iee. ac. cn Abstract The distribution of solar radiation is …

Ordinary kriging

Kriging refers to a family of least-square linear regression algorithms that attempt to predict values of a variable at locations where data are not available based on the spatial pattern …

Monthly-averaged daily data

Figures 2 and 3 show the annual variation of global irradiation and sunshine hours for the stations considered in this work. Generally, they show a regular annual variation with a …

User guidance

1.1 User survey One of main objectives of the MESoR project is the involvement of key stakeholders throughout the project. Their first task was the participation in a user survey …

Specifications of the solar radiation databases and underlying methods

1.1. General specifications Spatially-distributed (map) solar radiation databases are classified according to several factors: • Input data from which they have been created: (a) observations from the meteorological stations (global, …

Formulas

The extraterrestrial solar radiation on the horizontal surface is the function of Latitude of the location. As the solar radiation passes through the earth’s atmosphere, it is further modified by …

Residual kriging

In the residual kriging procedure, instead of kriging Z (x) directly, a regression analysis is first carried out between Z (x) and some external variables. Then, the residuals r (x) …

Evaluation of a new model to calculate direct normal irradiance based. on satellite images of Meteosat Second Generation

A. Kemper, E. Lorenz, A. Hammer and D. Heinemann Department of Energy and Semiconductor Research, Faculty V - Institute of Physics Oldenburg University, D-26111 Oldenburg, Germany Corresponding Author, axel. kemper@uni-oldenburg. …