Assessment of four methods to estimate surface UV radiation using satellite data by comparison with ground measurements from four stations in Europe

Antti Arola, Sari Kalliskota, Peter den Outer, Kåre Edvardsen, Georg H. Hansen, Tapani Koskela, Timothy J. Martin, J Matthijsen, Ralph Meerkötter, P. Peeters, Gunther Seckmeyer, P. C. Simon, Harry Slaper, P. Taalas, Jean Verdebout