Please use this identifier to cite or link to this item:
Title: Impact of biomass burning on aerosol size distribution, aerosol optical properties and associated radiative forcing
Author: Alonso-Blanco, Elisabeth
Calvo, Ana I.
Pont, Véronique
Mallet, Marc
Fraile, Roberto
Castro, Amaya
Keywords: aerosol optical counter
aerosol optical properties
aerosol size distribution
biomass burning
radiative forcing
Issue Date: 2014
Publisher: Taiwan Association for Aerosol Research
Abstract: The influence of biomass burning on aerosol size distributions, particle number and radiative forcing has been studied at a rural site in Spain. It has been found that air contaminated by aerosols from biomass burning presents four times the total number of particles registered in non-contaminated air. In the case of the smallest fraction of the fine mode, between 0.1 and 0.2 μm, the increase soars to over seven times the total number of particles. An analysis of the evolution of the count mean diameter in the fine mode (CMDf) in the 8 daily measurements has revealed a decrease of over 25% in this parameter in the modified measurements when compared with measurements that were not contaminated by aerosols from biomass burning. In contrast, when the aerosol transport time is long, the increases detected in CMDf range between 15% and 100% when compared with measurements of air by non-aged aerosol from biomass burning. Shortwave radiative forcings have been calculated for these high loads of fine aerosols with GAME (Global Atmospheric Model) software. For the August event, the daytime average of surface radiative forcing is –66 (±30) W/m2, and at the top of the atmosphere the forcing is –32 (±12) W/m2. Induced daytime average of atmospheric radiative forcing reaches 34 (±20) W/m2. The study demonstrates that wildfires affect not only the number of particles and the size distribution, causing a clear increase in the number of aerosols in the atmosphere, but they are also responsible for altering the local radiative balance.
Peer review: yes
DOI: 10.4209/aaqr.2013.05.0163
ISSN: 1680-8584
Appears in Collections:CESAM - Artigos

Files in This Item:
File Description SizeFormat 
Alonso-Blanco et al. - 2014 - Impact of Biomass Burning on Aerosol Size Distribu.pdf793.06 kBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.