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Tropospheric and stratospheric smoke over Europe as observed within EARLINET/ACTRIS in summer 2017

Baars, Holger; Acheson, Karen; Althausen, Dietrich; Amiridis, Vassilis; Amodeo, Aldo; Ansmann, Albert; Apituley, Arnoud; Alados Arboledas, Lucal; Baldasano, José M.; Baray, Jean-Luc; Barragán, Rubén; Belegante, Livio; Antonio Benavent-Oltra, Jose; Bortoli, Daniele; Bühl, Johannes; Comeron, Adolfo; Córdoba, Carmen; D'Amico, Guiseppe; del Aguila, Ana; Dionisi, Davide; ... mehr

Abstract:
For several weeks in summer 2017, strong smoke layers were observed over Europe at numerous EARLINET
stations. EARLINET is the European research lidar network and part of ACTRIS and comprises more than 30
ground-based lidars.
The smoke layers were observed in the troposphere as well as in the stratosphere up to 25 km from Northern
Scandinavia over whole western and central Europe to the Mediterranean regions.
Backward trajectory analysis among other tools revealed that these smoke layers originated from strong wild fires
in western Canada in combination with pyrocumulus convection. An extraordinary fire event in the mid of August
caused intense smoke layers that were observed across Europe for several weeks starting on 18 August 2017.
Maximum aerosol optical depths up to 1.0 at 532 nm were observed at Leipzig, Germany, on 22 August 2017
during the peak of this event.
The stratospheric smoke layers reached extinction coefficient values of more than 600 Mm−1 at 532 nm, a factor
of 10 higher than observed for volcanic ash after the Pinatubo eruption in the 1990s. First analyses of the intensive
optical properties revealed low particle depolarization values at 532 nm for the tropospheric smoke (spherical
... mehr

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Volltext §
DOI: 10.5445/IR/1000104504
Veröffentlicht am 03.01.2020
Coverbild
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Vortrag
Jahr 2018
Sprache Englisch
Identifikator KITopen-ID: 1000104504
HGF-Programm 12.03.01 (POF III, LK 01)
Veranstaltung EGU General Assembly (2018), Wien, Österreich, 08.04.2018 – 13.04.2018
Schlagworte EARLINET, ACTRIS, stratospheric smoke, lidar
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