Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008
Multiwavelength aerosol Raman lidar in combination with polarization lidar at Praia (14.9 degrees N, 23.5 degrees W), Cape Verde, is used to separate the optical properties of desert dust and biomass burning particles as a function of height in the mixed dust and smoke plumes over the tropical North...
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ftunivhertford:oai:uhra.herts.ac.uk:2299/11255 2023-05-15T13:06:58+02:00 Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 Tesche, Matthias Ansmann, A. Mueller, D. Althausen, D. Engelmann, R. Freudenthaler, V. Gross, S. School of Physics, Astronomy and Mathematics Centre for Atmospheric and Climate Physics Research School of Physics, Engineering & Computer Science Department of Physics, Astronomy and Mathematics 2009-07-08 14 http://hdl.handle.net/2299/11255 eng eng Journal of Geophysical Research: Atmospheres Tesche , M , Ansmann , A , Mueller , D , Althausen , D , Engelmann , R , Freudenthaler , V & Gross , S 2009 , ' Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 ' , Journal of Geophysical Research: Atmospheres , vol. 114 , D13202 . https://doi.org/10.1029/2009JD011862 2169-897X PURE: 1979231 PURE UUID: 17de3c96-a941-40be-ba12-9a4d6409957d WOS: 000267936000004 Scopus: 70349303805 ORCID: /0000-0002-0203-7654/work/68611719 http://hdl.handle.net/2299/11255 MICROPHYSICAL PARTICLE PROPERTIES BOUNDARY-LAYER SOUTHERN MOROCCO EXTINCTION BACKSCATTER LIDAR DEPOLARIZATION RATIO AEROSOL OPTICAL DEPTH SOIL DUST PROFILES SAMUM 2009 ftunivhertford 2021-11-05T00:00:56Z Multiwavelength aerosol Raman lidar in combination with polarization lidar at Praia (14.9 degrees N, 23.5 degrees W), Cape Verde, is used to separate the optical properties of desert dust and biomass burning particles as a function of height in the mixed dust and smoke plumes over the tropical North Atlantic west of the African continent. The advanced lidar method furthermore permits the derivation of the single-scattering albedo and microphysical properties of the African biomass burning smoke. A case study is presented to discuss the potential of the technique. The observations were performed during the Saharan Mineral Dust Experiment (SAMUM) in January and February 2008. The height-resolved lidar results are compared with column-integrated products obtained with Aerosol Robotic Network Sun photometer. Good agreement is found. Furthermore, the findings are compared with lidar and aircraft observations recently performed in western Africa and with our previous lidar observations taken in tropical and subtropical regions of southern and eastern Asia. The SAMUM case study represents typical aerosol layering conditions in the tropical outflow regime of western Africa during winter season. Above a dense desert dust layer (with an optical depth of about 0.25 at 532 nm) which reached to 1500 m, a lofted layer consisting of desert dust (0.08 optical depth) and biomass burning smoke (0.24 optical depth) extended from 1500 to 5000 m height. Extinction values were 20 +/- 10 Mm(-1) (desert dust) and 20-80 Mm(-1) (smoke) in the lofted plume. The smoke extinction-to-backscatter ratios were rather high, with values up to more than 100 sr, effective radii ranged from 0.15 to 0.35 mu m, and the smoke single-scattering albedo was partly below 0.7. Peer reviewed Other/Unknown Material Aerosol Robotic Network North Atlantic University of Hertfordshire: UH Research Archive |
institution |
Open Polar |
collection |
University of Hertfordshire: UH Research Archive |
op_collection_id |
ftunivhertford |
language |
English |
topic |
MICROPHYSICAL PARTICLE PROPERTIES BOUNDARY-LAYER SOUTHERN MOROCCO EXTINCTION BACKSCATTER LIDAR DEPOLARIZATION RATIO AEROSOL OPTICAL DEPTH SOIL DUST PROFILES SAMUM |
spellingShingle |
MICROPHYSICAL PARTICLE PROPERTIES BOUNDARY-LAYER SOUTHERN MOROCCO EXTINCTION BACKSCATTER LIDAR DEPOLARIZATION RATIO AEROSOL OPTICAL DEPTH SOIL DUST PROFILES SAMUM Tesche, Matthias Ansmann, A. Mueller, D. Althausen, D. Engelmann, R. Freudenthaler, V. Gross, S. Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
topic_facet |
MICROPHYSICAL PARTICLE PROPERTIES BOUNDARY-LAYER SOUTHERN MOROCCO EXTINCTION BACKSCATTER LIDAR DEPOLARIZATION RATIO AEROSOL OPTICAL DEPTH SOIL DUST PROFILES SAMUM |
description |
Multiwavelength aerosol Raman lidar in combination with polarization lidar at Praia (14.9 degrees N, 23.5 degrees W), Cape Verde, is used to separate the optical properties of desert dust and biomass burning particles as a function of height in the mixed dust and smoke plumes over the tropical North Atlantic west of the African continent. The advanced lidar method furthermore permits the derivation of the single-scattering albedo and microphysical properties of the African biomass burning smoke. A case study is presented to discuss the potential of the technique. The observations were performed during the Saharan Mineral Dust Experiment (SAMUM) in January and February 2008. The height-resolved lidar results are compared with column-integrated products obtained with Aerosol Robotic Network Sun photometer. Good agreement is found. Furthermore, the findings are compared with lidar and aircraft observations recently performed in western Africa and with our previous lidar observations taken in tropical and subtropical regions of southern and eastern Asia. The SAMUM case study represents typical aerosol layering conditions in the tropical outflow regime of western Africa during winter season. Above a dense desert dust layer (with an optical depth of about 0.25 at 532 nm) which reached to 1500 m, a lofted layer consisting of desert dust (0.08 optical depth) and biomass burning smoke (0.24 optical depth) extended from 1500 to 5000 m height. Extinction values were 20 +/- 10 Mm(-1) (desert dust) and 20-80 Mm(-1) (smoke) in the lofted plume. The smoke extinction-to-backscatter ratios were rather high, with values up to more than 100 sr, effective radii ranged from 0.15 to 0.35 mu m, and the smoke single-scattering albedo was partly below 0.7. Peer reviewed |
author2 |
School of Physics, Astronomy and Mathematics Centre for Atmospheric and Climate Physics Research School of Physics, Engineering & Computer Science Department of Physics, Astronomy and Mathematics |
author |
Tesche, Matthias Ansmann, A. Mueller, D. Althausen, D. Engelmann, R. Freudenthaler, V. Gross, S. |
author_facet |
Tesche, Matthias Ansmann, A. Mueller, D. Althausen, D. Engelmann, R. Freudenthaler, V. Gross, S. |
author_sort |
Tesche, Matthias |
title |
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
title_short |
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
title_full |
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
title_fullStr |
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
title_full_unstemmed |
Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 |
title_sort |
vertically resolved separation of dust and smoke over cape verde using multiwavelength raman and polarization lidars during saharan mineral dust experiment 2008 |
publishDate |
2009 |
url |
http://hdl.handle.net/2299/11255 |
genre |
Aerosol Robotic Network North Atlantic |
genre_facet |
Aerosol Robotic Network North Atlantic |
op_relation |
Journal of Geophysical Research: Atmospheres Tesche , M , Ansmann , A , Mueller , D , Althausen , D , Engelmann , R , Freudenthaler , V & Gross , S 2009 , ' Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008 ' , Journal of Geophysical Research: Atmospheres , vol. 114 , D13202 . https://doi.org/10.1029/2009JD011862 2169-897X PURE: 1979231 PURE UUID: 17de3c96-a941-40be-ba12-9a4d6409957d WOS: 000267936000004 Scopus: 70349303805 ORCID: /0000-0002-0203-7654/work/68611719 http://hdl.handle.net/2299/11255 |
_version_ |
1766029457373528064 |