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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ftdoajarticles:oai:doaj.org/article:df977c0b58de421c9d854c632763d360 2023-05-15T13:06:24+02:00 Aerosol characterization at the Saharan AERONET site Tamanrasset C. Guirado E. Cuevas V. E. Cachorro C. Toledano S. Alonso-Pérez J. J. Bustos S. Basart P. M. Romero C. Camino M. Mimouni L. Zeudmi P. Goloub J. M. Baldasano A. M. de Frutos 2014-11-01T00:00:00Z https://doi.org/10.5194/acp-14-11753-2014 https://doaj.org/article/df977c0b58de421c9d854c632763d360 EN eng Copernicus Publications http://www.atmos-chem-phys.net/14/11753/2014/acp-14-11753-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-11753-2014 https://doaj.org/article/df977c0b58de421c9d854c632763d360 Atmospheric Chemistry and Physics, Vol 14, Iss 21, Pp 11753-11773 (2014) Physics QC1-999 Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.5194/acp-14-11753-2014 2022-12-31T03:27:16Z 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 Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 14 21 11753 11773 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 C. Guirado E. Cuevas V. E. Cachorro C. Toledano S. Alonso-Pérez J. J. Bustos S. Basart P. M. Romero C. Camino M. Mimouni L. Zeudmi P. Goloub J. M. Baldasano A. M. de Frutos Aerosol characterization at the Saharan AERONET site Tamanrasset |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
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 |
C. Guirado E. Cuevas V. E. Cachorro C. Toledano S. Alonso-Pérez J. J. Bustos S. Basart P. M. Romero C. Camino M. Mimouni L. Zeudmi P. Goloub J. M. Baldasano A. M. de Frutos |
author_facet |
C. Guirado E. Cuevas V. E. Cachorro C. Toledano S. Alonso-Pérez J. J. Bustos S. Basart P. M. Romero C. Camino M. Mimouni L. Zeudmi P. Goloub J. M. Baldasano A. M. de Frutos |
author_sort |
C. Guirado |
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 |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-11753-2014 https://doaj.org/article/df977c0b58de421c9d854c632763d360 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmospheric Chemistry and Physics, Vol 14, Iss 21, Pp 11753-11773 (2014) |
op_relation |
http://www.atmos-chem-phys.net/14/11753/2014/acp-14-11753-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-11753-2014 https://doaj.org/article/df977c0b58de421c9d854c632763d360 |
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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1766003902700847104 |