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espanolEste trabajo presenta la caracterizacion, durante un evento especial de transporte a gran distancia, de particulas de combustion de biomasa, procedentes de incendios forestales en Canada. El evento se detecto entre el 11 y el 17 de julio de 2013 en la estacion de EARLINET en Granada (37.16° N, 3.61° W, 680 snm), asi como en otras estaciones de EARLINET. Para su caracterizacion se han usado diferentes tecnicas, incluyendo activas/pasivas y terrestres/por satelite. En particular, el estudio implico el procesado de senales lidar tanto elasticas como Raman, y datos de fotometro solar de la red AERONET. Ademas se han usado modelos como HYSPLIT, NAAPS y BSC-DREAM8b para investigar el comportamiento de las plumas de aerosol a escala sinoptica. Los resultados destacan la presencia de una estructura con multiples capas que muestran un exponente de Angstrom de coeficiente de retrodispersion alto (aproximadamente 2) y una despolarizacion lineal de particulas muy baja (menos de 0.04) en las capas a 5-6 km (snm) de altura, lo que indica que son particulas considerablemente pequenas y esfericas. Durante el periodo mas intenso, el 14 de julio, se detectaron valores del coeficiente de retrodispersion de hasta 2.9×10ˉ⁶ (m sr) ˉ¹ para 532 nm. EnglishThis work presents the characterization of aerosols during a special episode of long-range transported biomass burning particles from Canadian forest fires. This event was detected at the EARLINET Granada station (37.16° N, 3.61° W, 680 m asl) from 11ᵗʰ to 17ᵗʰ July 2013, and also over other EARLINET stations. Different techniques, covering active/passive and ground based/satellite ones, have been used. In particular, the study has involved processing of both Raman and elastic lidar signals and sun-photometer AERONET data. Furthermore, modeling tools as HYSPLIT, NAAPS and BSC-DREAM8b have been used to understand the synoptic behavior of the aerosol plumes. The results highlight the presence of a multilayered structure showing large backscatter-related Angstrom Exponent (around 2) and very low particle linear depolarization (less than 0.04) at layers around 5-6 km (asl) which means considerably small and spherical particles. During the strongest period, on 14ᵗʰ July, aerosol backscatter values up to 2.9×10ˉ⁶ (m sr) ˉ¹ at 532 nm were detected in this layer.

optica pura y aplicada/óptica pura y aplicada

Characterization of atmospheric aerosols for a long range transport of biomass burning particles from Canadian forest fires over the southern Iberian Peninsula in July 2013