Black Carbon (BC) and Dust mass concentration measures at North Atlantic Free Troposphere

7th International Aerosol Conference. St. Paul, Minnesota, 10-15 September 2006.The PICO-NARE observatory is an experimental site on the Pico Island (38.470º; 28.404º; 2225 m altitude) in the Azores Archipelago, developed to provide a base for free troposphere measurements (Richard & Fialho, 2002). One Aethalometer (AE31) was used to determine the aerosol seasonal variability for the Central North Atlantic region. Application of the separation technique, proposed by Fialho et al. (2005,2006), aloud the establishment of the seasonal cycles for BC and Dust