Aerosol characterization at the Saharan AERONET site Tamanrasset
More than 2 years of columnar atmospheric aerosol measurements (2006-2009) at the Tamanrasset site (22.79° N, 5.53° E, 1377 m a.s.l.), in the heart of the Sahara, are analysed. Aerosol Robotic Network (AERONET) level 2.0 data were used. The KCICLO (K is the name of a constant and ciclo means cycle i...
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2014
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Online Access: | http://hdl.handle.net/10261/217884 https://doi.org/10.5194/acp-14-11753-2014 |
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ftcsic:oai:digital.csic.es:10261/217884 2024-02-11T09:54:45+01:00 Aerosol characterization at the Saharan AERONET site Tamanrasset Guirado, C. Cuevas, E. Cachorro, V.E. Toledano, C. Alonso-Pérez, Silvia Bustos, J.J. Basart, S. Romero, P.M. Camino, C. Mimouni, M. Zeudmi, L. Goloub, P. Baldasano, J.M. De Frutos, A.M. 2014 http://hdl.handle.net/10261/217884 https://doi.org/10.5194/acp-14-11753-2014 unknown European Geophysical Society Publisher's version http://dx.doi.org/10.5194/acp-14-11753-2014 Sí doi:10.5194/acp-14-11753-2014 issn: 1680-7324 Atmospheric Chemistry and Physics 14: 11753- 11773 (2014) http://hdl.handle.net/10261/217884 open artículo http://purl.org/coar/resource_type/c_6501 2014 ftcsic https://doi.org/10.5194/acp-14-11753-2014 2024-01-16T10:56:58Z More than 2 years of columnar atmospheric aerosol measurements (2006-2009) at the Tamanrasset site (22.79° N, 5.53° E, 1377 m a.s.l.), in the heart of the Sahara, are analysed. Aerosol Robotic Network (AERONET) level 2.0 data were used. The KCICLO (K is the name of a constant and ciclo means cycle in Spanish) method was applied to a part of the level 1.5 data series to improve the quality of the results. The annual variability of aerosol optical depth (AOD) and Ångström exponent (AE) has been found to be strongly linked to the convective boundary layer (CBL) thermodynamic features. The dry-cool season (autumn and winter) is characterized by a shallow CBL and very low mean turbidity (AOD ∼0.09 at 440 nm, AE ∼0.62). The wet-hot season (spring and summer) is dominated by high turbidity of coarse dust particles (AE ∼0.28, AOD ∼0.39 at 440 nm) and a deep CBL. The aerosol-type characterization shows desert mineral dust as the prevailing aerosol. Both pure Saharan dust and very clear sky conditions are observed depending on the season. However, several case studies indicate an anthropogenic fine mode contribution from the industrial areas in Libya and Algeria. The concentration weighted trajectory (CWT) source apportionment method was used to identify potential sources of air masses arriving at Tamanrasset at several heights for each season. Microphysical and optical properties and precipitable water vapour were also investigated. Article in Journal/Newspaper Aerosol Robotic Network Digital.CSIC (Spanish National Research Council) Atmospheric Chemistry and Physics 14 21 11753 11773 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
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description |
More than 2 years of columnar atmospheric aerosol measurements (2006-2009) at the Tamanrasset site (22.79° N, 5.53° E, 1377 m a.s.l.), in the heart of the Sahara, are analysed. Aerosol Robotic Network (AERONET) level 2.0 data were used. The KCICLO (K is the name of a constant and ciclo means cycle in Spanish) method was applied to a part of the level 1.5 data series to improve the quality of the results. The annual variability of aerosol optical depth (AOD) and Ångström exponent (AE) has been found to be strongly linked to the convective boundary layer (CBL) thermodynamic features. The dry-cool season (autumn and winter) is characterized by a shallow CBL and very low mean turbidity (AOD ∼0.09 at 440 nm, AE ∼0.62). The wet-hot season (spring and summer) is dominated by high turbidity of coarse dust particles (AE ∼0.28, AOD ∼0.39 at 440 nm) and a deep CBL. The aerosol-type characterization shows desert mineral dust as the prevailing aerosol. Both pure Saharan dust and very clear sky conditions are observed depending on the season. However, several case studies indicate an anthropogenic fine mode contribution from the industrial areas in Libya and Algeria. The concentration weighted trajectory (CWT) source apportionment method was used to identify potential sources of air masses arriving at Tamanrasset at several heights for each season. Microphysical and optical properties and precipitable water vapour were also investigated. |
format |
Article in Journal/Newspaper |
author |
Guirado, C. Cuevas, E. Cachorro, V.E. Toledano, C. Alonso-Pérez, Silvia Bustos, J.J. Basart, S. Romero, P.M. Camino, C. Mimouni, M. Zeudmi, L. Goloub, P. Baldasano, J.M. De Frutos, A.M. |
spellingShingle |
Guirado, C. Cuevas, E. Cachorro, V.E. Toledano, C. Alonso-Pérez, Silvia Bustos, J.J. Basart, S. Romero, P.M. Camino, C. Mimouni, M. Zeudmi, L. Goloub, P. Baldasano, J.M. De Frutos, A.M. Aerosol characterization at the Saharan AERONET site Tamanrasset |
author_facet |
Guirado, C. Cuevas, E. Cachorro, V.E. Toledano, C. Alonso-Pérez, Silvia Bustos, J.J. Basart, S. Romero, P.M. Camino, C. Mimouni, M. Zeudmi, L. Goloub, P. Baldasano, J.M. De Frutos, A.M. |
author_sort |
Guirado, C. |
title |
Aerosol characterization at the Saharan AERONET site Tamanrasset |
title_short |
Aerosol characterization at the Saharan AERONET site Tamanrasset |
title_full |
Aerosol characterization at the Saharan AERONET site Tamanrasset |
title_fullStr |
Aerosol characterization at the Saharan AERONET site Tamanrasset |
title_full_unstemmed |
Aerosol characterization at the Saharan AERONET site Tamanrasset |
title_sort |
aerosol characterization at the saharan aeronet site tamanrasset |
publisher |
European Geophysical Society |
publishDate |
2014 |
url |
http://hdl.handle.net/10261/217884 https://doi.org/10.5194/acp-14-11753-2014 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
Publisher's version http://dx.doi.org/10.5194/acp-14-11753-2014 Sí doi:10.5194/acp-14-11753-2014 issn: 1680-7324 Atmospheric Chemistry and Physics 14: 11753- 11773 (2014) http://hdl.handle.net/10261/217884 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/acp-14-11753-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
21 |
container_start_page |
11753 |
op_container_end_page |
11773 |
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1790601568783958016 |