Carlos Borrego: – Seventeenth International Conference on Modelling, Monitoring and Management of Air Pollution (Air Pollution), 20-22 July, 2009, Tallin, Estonia. – 30th International Meeting on Air Pollution Modelling and Its Applications. Ana Isabel Miranda: – 1st International Conference on Modelling, Monitoring and Management of Forest Fires (Forest Fires 2008). 17-19 September 2008, Toledo, Spain – 30th International Meeting on Air Pollution Modelling and Its Applications, 18-22 May, 2009, San Fransico, USA.