Baldasano, J.M., Jimenez Guerrero, P., Jorba, O., Perez, C., Lopez, E., Guereca, P., Martin, F., Vivanco, M.G., Palomino, I., Querol, X., Pandolfi, M., Sanz, M.J., Dieguez, J.J. 2008. Caliope: an operational air quality forecasting system for the Iberian Peninsula, Balearic Islands and Canary Islands – first annual evaluation and ongoing developments. Advances In Science And Research, 2:89-98.