TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997)
International audience We combined aerosol observations of TOMS/Nimbus-7 (1979-1993) and Meteosat/VIS (1984-1997) to investigate the variability of Saharan dust transport over the Atlantic over nearly 20 years. We first used three years (1986-1988) of coincident daily Meteosat images over the northe...
Published in: | Geophysical Research Letters |
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ftunivnantes:oai:HAL:hal-03126746v1 2023-05-15T17:33:32+02:00 TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) Chiapello, I. Moulin, C. Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2002-04 https://hal.archives-ouvertes.fr/hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746/document https://hal.archives-ouvertes.fr/hal-03126746/file/2001GL013767.pdf https://doi.org/10.1029/2001GL013767 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2001GL013767 hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746/document https://hal.archives-ouvertes.fr/hal-03126746/file/2001GL013767.pdf doi:10.1029/2001GL013767 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.archives-ouvertes.fr/hal-03126746 Geophysical Research Letters, 2002, 29 (8), pp.17-1-17-4. ⟨10.1029/2001GL013767⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2002 ftunivnantes https://doi.org/10.1029/2001GL013767 2022-12-07T01:07:26Z International audience We combined aerosol observations of TOMS/Nimbus-7 (1979-1993) and Meteosat/VIS (1984-1997) to investigate the variability of Saharan dust transport over the Atlantic over nearly 20 years. We first used three years (1986-1988) of coincident daily Meteosat images over the northern tropical Atlantic (15-30°N, 5-30°W) to convert the TOMS semi-quantitative index into dust optical thickness by means of two (''winter'' and ''summer'') linear relationships. We then processed the whole TOMS/Nimbus-7 archive and found that both seasonal and interannual variability of the mean dust optical thickness over the Atlantic retrieved by TOMS and Meteosat are consistent. This consistency offers an unique opportunity to monitor the export of Saharan dust over the Atlantic during the last two decades. This analysis provides the first evidence of the high year-to-year variability of dust transport during winter, and confirms the importance of meteorological factors, through the North Atlantic Oscillation, in affecting its occurrence at this season. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Université de Nantes: HAL-UNIV-NANTES Geophysical Research Letters 29 8 17-1 17-4 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Chiapello, I. Moulin, C. TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We combined aerosol observations of TOMS/Nimbus-7 (1979-1993) and Meteosat/VIS (1984-1997) to investigate the variability of Saharan dust transport over the Atlantic over nearly 20 years. We first used three years (1986-1988) of coincident daily Meteosat images over the northern tropical Atlantic (15-30°N, 5-30°W) to convert the TOMS semi-quantitative index into dust optical thickness by means of two (''winter'' and ''summer'') linear relationships. We then processed the whole TOMS/Nimbus-7 archive and found that both seasonal and interannual variability of the mean dust optical thickness over the Atlantic retrieved by TOMS and Meteosat are consistent. This consistency offers an unique opportunity to monitor the export of Saharan dust over the Atlantic during the last two decades. This analysis provides the first evidence of the high year-to-year variability of dust transport during winter, and confirms the importance of meteorological factors, through the North Atlantic Oscillation, in affecting its occurrence at this season. |
author2 |
Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Chiapello, I. Moulin, C. |
author_facet |
Chiapello, I. Moulin, C. |
author_sort |
Chiapello, I. |
title |
TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
title_short |
TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
title_full |
TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
title_fullStr |
TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
title_full_unstemmed |
TOMS and METEOSAT satellite records of the variability of Saharan dust transport over the Atlantic during the last two decades (1979-1997) |
title_sort |
toms and meteosat satellite records of the variability of saharan dust transport over the atlantic during the last two decades (1979-1997) |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.archives-ouvertes.fr/hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746/document https://hal.archives-ouvertes.fr/hal-03126746/file/2001GL013767.pdf https://doi.org/10.1029/2001GL013767 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.archives-ouvertes.fr/hal-03126746 Geophysical Research Letters, 2002, 29 (8), pp.17-1-17-4. ⟨10.1029/2001GL013767⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2001GL013767 hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746 https://hal.archives-ouvertes.fr/hal-03126746/document https://hal.archives-ouvertes.fr/hal-03126746/file/2001GL013767.pdf doi:10.1029/2001GL013767 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2001GL013767 |
container_title |
Geophysical Research Letters |
container_volume |
29 |
container_issue |
8 |
container_start_page |
17-1 |
op_container_end_page |
17-4 |
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1766132083032326144 |