TY - JOUR N2 - The results of the application and evaluation of the r.sun model for calculation of the total solar radiation for the Wedel Jarlsberg Land (SW Spitsbergen) are presented. Linke Turbidity Factor (LTF), which is the obligatory parameter for direct and diffused radiation calculations with the r.sun model, is derived here with the empirical formula and meteoro− logical measurements. Few different approaches for calculation of LTF are presented and tested. The r.sun model results, calculated with these various LTF, are evaluated through comparison with total solar radiation measurements gathered at Polish Polar Station. The r.sun model is found to be in good agreement with the measurements for clear sky condi− tions, with the explained variance (R2) close to 0.9. Overall, the model slightly underesti− mates the measured total radiation. Reasonable results were calculated for the cloudiness condition up to 2 octas, and for these r.sun model can be considered as a reliable and flexible tool providing spatial data on solar radiation for the study area. L1 - http://www.czasopisma.pan.pl/Content/108310/PDF-MASTER/article-p17.pdf L2 - http://www.czasopisma.pan.pl/Content/108310 PY - 2010 IS - No 1 EP - 32 KW - Arctic KW - Spitsbergen KW - solar radiation KW - r.sun KW - Linke Turbidity Factor KW - GISGRASS A1 - Kryza, Maciej A1 - Szymanowski, Mariusz A1 - Migała, Krzysztof A1 - Pietras, Małgorzata PB - Polish Academy of Sciences PB - Committee on Polar Research DA - 2010 T1 - Spatial information on total solar radiation: Application and evaluation of the r.sun modelf or the Wedel Jarlsberg Land, Svalbard SP - 17 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/108310 T2 - Polish Polar Research ER -