Compatibility of different measurement techniques of global solar radiation and application for long-term observations at Izaña Observatory. - García, Rosa Delia; Cuevas, Emilio; García, Omaira Elena; Ramos, Ramón; Romero-Campos, Pedro Miguel; de Ory, Fernado; Cachorro, Victoria Eugenia; de Frutos, Angel (Atmospheric Measurement Techniques, 2017)