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Multiyear Measurements of the Aerosol Absorption Coefficient Near the Surface i...
Nepomuceno Pereira, Sérgio; Wagner, Frank; Silva, Ana MariaMeasurements of the aerosol absorption coefficient, between 2007 and 2013, were made at the ground level in Évora, a Portuguese small town located in the southwestern Iberia Peninsula. Such a relatively long time series of absorbing aerosols is unique in Portugal and uncommon elsewhere.The average aerosol absorption coefficientwas close to 9Mm−1 and clear cycles at both daily and seasonal time scales were found...
Forest Fire Smoke Layers Observed in the Free Troposphere over Portugal with a ...
Preißler, Jana; Silva, Ana Maria; Wagner, Frank; Nepomuceno Pereira, Sérgio; Guerrero-Rascado, Juan LuisVertically resolved optical and microphysical properties of biomass burning aerosols, measured in 2011 with a multiwavelength Raman lidar, are presented.Thetransportation time, within 1-2 days (or less), pointed towards the presence of relatively fresh smoke particles over the site. Some strong layers aloftwere observedwith particle backscatter and extinction coefficients (at 355 nm) greater than 5Mm−1 sr−1 and...
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