Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE
The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment (SALTRACE) was devoted to the investigation of Saharan dust properties over the Caribbean. The campaign took place in June–July 2013. A wide set of ground-based and airborne aerosol instrumentation was deployed at the...
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ftcopernicus:oai:publications.copernicus.org:acp76091 2023-05-15T13:06:35+02:00 Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE Toledano, Carlos Torres, Benjamín Velasco-Merino, Cristian Althausen, Dietrich Groß, Silke Wiegner, Matthias Weinzierl, Bernadett Gasteiger, Josef Ansmann, Albert González, Ramiro Mateos, David Farrel, David Müller, Thomas Haarig, Moritz Cachorro, Victoria E. 2019-12-02 application/pdf https://doi.org/10.5194/acp-19-14571-2019 https://www.atmos-chem-phys.net/19/14571/2019/ eng eng doi:10.5194/acp-19-14571-2019 https://www.atmos-chem-phys.net/19/14571/2019/ eISSN: 1680-7324 Text 2019 ftcopernicus https://doi.org/10.5194/acp-19-14571-2019 2019-12-24T09:48:08Z The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment (SALTRACE) was devoted to the investigation of Saharan dust properties over the Caribbean. The campaign took place in June–July 2013. A wide set of ground-based and airborne aerosol instrumentation was deployed at the island of Barbados for a comprehensive experiment. Several sun photometers performed measurements during this campaign: two AERONET (Aerosol Robotic Network) Cimel sun photometers and the Sun and Sky Automatic Radiometer (SSARA). The sun photometers were co-located with the ground-based multi-wavelength lidars BERTHA (Backscatter Extinction lidar Ratio Temperature Humidity profiling Apparatus) and POLIS (Portable Lidar System). Aerosol properties derived from direct sun and sky radiance observations are analyzed, and a comparison with the co-located lidar and in situ data is provided. The time series of aerosol optical depth (AOD) allows identifying successive dust events with short periods in between in which the marine background conditions were observed. The moderate aerosol optical depth in the range of 0.3 to 0.6 was found during the dust periods. The sun photometer infrared channel at the 1640 nm wavelength was used in the retrieval to investigate possible improvements to aerosol size retrievals, and it was expected to have a larger sensitivity to coarse particles. The comparison between column (aerosol optical depth) and surface (dust concentration) data demonstrates the connection between the Saharan Air Layer and the boundary layer in the Caribbean region, as is shown by the synchronized detection of the successive dust events in both datasets. However the differences of size distributions derived from sun photometer data and in situ observations reveal the difficulties in carrying out a column closure study. Text Aerosol Robotic Network Copernicus Publications: E-Journals Atmospheric Chemistry and Physics 19 23 14571 14583 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment (SALTRACE) was devoted to the investigation of Saharan dust properties over the Caribbean. The campaign took place in June–July 2013. A wide set of ground-based and airborne aerosol instrumentation was deployed at the island of Barbados for a comprehensive experiment. Several sun photometers performed measurements during this campaign: two AERONET (Aerosol Robotic Network) Cimel sun photometers and the Sun and Sky Automatic Radiometer (SSARA). The sun photometers were co-located with the ground-based multi-wavelength lidars BERTHA (Backscatter Extinction lidar Ratio Temperature Humidity profiling Apparatus) and POLIS (Portable Lidar System). Aerosol properties derived from direct sun and sky radiance observations are analyzed, and a comparison with the co-located lidar and in situ data is provided. The time series of aerosol optical depth (AOD) allows identifying successive dust events with short periods in between in which the marine background conditions were observed. The moderate aerosol optical depth in the range of 0.3 to 0.6 was found during the dust periods. The sun photometer infrared channel at the 1640 nm wavelength was used in the retrieval to investigate possible improvements to aerosol size retrievals, and it was expected to have a larger sensitivity to coarse particles. The comparison between column (aerosol optical depth) and surface (dust concentration) data demonstrates the connection between the Saharan Air Layer and the boundary layer in the Caribbean region, as is shown by the synchronized detection of the successive dust events in both datasets. However the differences of size distributions derived from sun photometer data and in situ observations reveal the difficulties in carrying out a column closure study. |
format |
Text |
author |
Toledano, Carlos Torres, Benjamín Velasco-Merino, Cristian Althausen, Dietrich Groß, Silke Wiegner, Matthias Weinzierl, Bernadett Gasteiger, Josef Ansmann, Albert González, Ramiro Mateos, David Farrel, David Müller, Thomas Haarig, Moritz Cachorro, Victoria E. |
spellingShingle |
Toledano, Carlos Torres, Benjamín Velasco-Merino, Cristian Althausen, Dietrich Groß, Silke Wiegner, Matthias Weinzierl, Bernadett Gasteiger, Josef Ansmann, Albert González, Ramiro Mateos, David Farrel, David Müller, Thomas Haarig, Moritz Cachorro, Victoria E. Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
author_facet |
Toledano, Carlos Torres, Benjamín Velasco-Merino, Cristian Althausen, Dietrich Groß, Silke Wiegner, Matthias Weinzierl, Bernadett Gasteiger, Josef Ansmann, Albert González, Ramiro Mateos, David Farrel, David Müller, Thomas Haarig, Moritz Cachorro, Victoria E. |
author_sort |
Toledano, Carlos |
title |
Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
title_short |
Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
title_full |
Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
title_fullStr |
Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
title_full_unstemmed |
Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE |
title_sort |
sun photometer retrievals of saharan dust properties over barbados during saltrace |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-14571-2019 https://www.atmos-chem-phys.net/19/14571/2019/ |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-19-14571-2019 https://www.atmos-chem-phys.net/19/14571/2019/ |
op_doi |
https://doi.org/10.5194/acp-19-14571-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
23 |
container_start_page |
14571 |
op_container_end_page |
14583 |
_version_ |
1766011764493778944 |