Aerosol columnar characterization in Morocco: ELT prospect.
The work presented in this paper focuses on site testing in terms of aerosol loadings where ground based measurements are essential. In our case they are materialized by the aerosol optical thickness (AOT) and are provided by the AERONET (Aerosol Robotic Network) network from four stations, Dakhla a...
Main Authors: | , , , , , |
---|---|
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
|
Subjects: | |
Online Access: | https://hal.ird.fr/ird-00390757 https://hal.ird.fr/ird-00390757/document https://hal.ird.fr/ird-00390757/file/Bounhir_2008_NewAstronomy_souspresse.pdf |
id |
ftccsdartic:oai:HAL:ird-00390757v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
site testing atmospheric effects data analys is photometer [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
spellingShingle |
site testing atmospheric effects data analys is photometer [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems Bounhir, A. Benkhaldoun, Z. Mougenot, Bernard Sarazin, B. Siher, E. Masmoudi, L. Aerosol columnar characterization in Morocco: ELT prospect. |
topic_facet |
site testing atmospheric effects data analys is photometer [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
description |
The work presented in this paper focuses on site testing in terms of aerosol loadings where ground based measurements are essential. In our case they are materialized by the aerosol optical thickness (AOT) and are provided by the AERONET (Aerosol Robotic Network) network from four stations, Dakhla and Marrakech in Morocco and Santa-Cruz and Izana in the Canary Islands. To fully scan all the area of the Moroccan territories, satellite measurements are certainly the most efficient way. We used the most popular and reliable products. TOMS (Total Ozone Mapping Spectrometer) aerosol index (AI) provided by both TOMS Earth Probe and TOMS OMI (Ozone Monitoring Instrument) along with aerosol optical thicknesses provided by MODIS (Moderate Resolution Imaging Spectroradiometer) and MISR (Multiangle Imaging Spectroradiometer) instruments, onboard Terra platform. The idea is to compare sensing capabilities of each instrument in the region under study, in order to know which is suitable for a given place and when. For that purpose linear regression analysis were performed between satellite data and AERONET observations. Good correlations were observed with the Pearson correlation coefficient, R, varying from 0.68 to 0.92 for MODIS, MISR and TOMS OMI, and from 0.54 to 0.74 for TOMS EP. A ten years analysis of the TOMS EP index has been performed with a calibration of the aerosol index into TOMS retrieved aerosol optical thickness in the area of interest (Morocco and Canary Islands) and an inter-comparison with the other products was achieved. In the frame of the ELT (Extremely Large Telescope) project prospect, once the appropriate satellite instrument have been chosen and the area scanned, the next step would be to scan aerosol loadings at higher altitude locations. Since vertical d istribution of aerosol optical thickness and microphysical properties are not well understood and modelized, we used the relationships related to Izana (Izana's altitude is 2367 m), as a first attempt, to extrapolate the aerosol optical thickness ... |
author2 |
Département de Physique Appliquée departement de physique appliquée LPHEA - Departement de Physique (LPHEA) Département de physique Centre d'études spatiales de la biosphère (CESBIO) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) European Southern Observatory (ESO) Faculté des sciences Rabat Université Mohammed V de Rabat Agdal |
format |
Article in Journal/Newspaper |
author |
Bounhir, A. Benkhaldoun, Z. Mougenot, Bernard Sarazin, B. Siher, E. Masmoudi, L. |
author_facet |
Bounhir, A. Benkhaldoun, Z. Mougenot, Bernard Sarazin, B. Siher, E. Masmoudi, L. |
author_sort |
Bounhir, A. |
title |
Aerosol columnar characterization in Morocco: ELT prospect. |
title_short |
Aerosol columnar characterization in Morocco: ELT prospect. |
title_full |
Aerosol columnar characterization in Morocco: ELT prospect. |
title_fullStr |
Aerosol columnar characterization in Morocco: ELT prospect. |
title_full_unstemmed |
Aerosol columnar characterization in Morocco: ELT prospect. |
title_sort |
aerosol columnar characterization in morocco: elt prospect. |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.ird.fr/ird-00390757 https://hal.ird.fr/ird-00390757/document https://hal.ird.fr/ird-00390757/file/Bounhir_2008_NewAstronomy_souspresse.pdf |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
ISSN: 1384-1076 New Astronomy https://hal.ird.fr/ird-00390757 New Astronomy, Elsevier, 2008, 13 (1), pp.41-52 |
op_relation |
ird-00390757 https://hal.ird.fr/ird-00390757 https://hal.ird.fr/ird-00390757/document https://hal.ird.fr/ird-00390757/file/Bounhir_2008_NewAstronomy_souspresse.pdf IRD: fdi:010046515 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766027213462831104 |
spelling |
ftccsdartic:oai:HAL:ird-00390757v1 2023-05-15T13:06:56+02:00 Aerosol columnar characterization in Morocco: ELT prospect. Bounhir, A. Benkhaldoun, Z. Mougenot, Bernard Sarazin, B. Siher, E. Masmoudi, L. Département de Physique Appliquée departement de physique appliquée LPHEA - Departement de Physique (LPHEA) Département de physique Centre d'études spatiales de la biosphère (CESBIO) Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) European Southern Observatory (ESO) Faculté des sciences Rabat Université Mohammed V de Rabat Agdal 2008 https://hal.ird.fr/ird-00390757 https://hal.ird.fr/ird-00390757/document https://hal.ird.fr/ird-00390757/file/Bounhir_2008_NewAstronomy_souspresse.pdf en eng HAL CCSD Elsevier ird-00390757 https://hal.ird.fr/ird-00390757 https://hal.ird.fr/ird-00390757/document https://hal.ird.fr/ird-00390757/file/Bounhir_2008_NewAstronomy_souspresse.pdf IRD: fdi:010046515 info:eu-repo/semantics/OpenAccess ISSN: 1384-1076 New Astronomy https://hal.ird.fr/ird-00390757 New Astronomy, Elsevier, 2008, 13 (1), pp.41-52 site testing atmospheric effects data analys is photometer [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2021-10-24T19:55:35Z The work presented in this paper focuses on site testing in terms of aerosol loadings where ground based measurements are essential. In our case they are materialized by the aerosol optical thickness (AOT) and are provided by the AERONET (Aerosol Robotic Network) network from four stations, Dakhla and Marrakech in Morocco and Santa-Cruz and Izana in the Canary Islands. To fully scan all the area of the Moroccan territories, satellite measurements are certainly the most efficient way. We used the most popular and reliable products. TOMS (Total Ozone Mapping Spectrometer) aerosol index (AI) provided by both TOMS Earth Probe and TOMS OMI (Ozone Monitoring Instrument) along with aerosol optical thicknesses provided by MODIS (Moderate Resolution Imaging Spectroradiometer) and MISR (Multiangle Imaging Spectroradiometer) instruments, onboard Terra platform. The idea is to compare sensing capabilities of each instrument in the region under study, in order to know which is suitable for a given place and when. For that purpose linear regression analysis were performed between satellite data and AERONET observations. Good correlations were observed with the Pearson correlation coefficient, R, varying from 0.68 to 0.92 for MODIS, MISR and TOMS OMI, and from 0.54 to 0.74 for TOMS EP. A ten years analysis of the TOMS EP index has been performed with a calibration of the aerosol index into TOMS retrieved aerosol optical thickness in the area of interest (Morocco and Canary Islands) and an inter-comparison with the other products was achieved. In the frame of the ELT (Extremely Large Telescope) project prospect, once the appropriate satellite instrument have been chosen and the area scanned, the next step would be to scan aerosol loadings at higher altitude locations. Since vertical d istribution of aerosol optical thickness and microphysical properties are not well understood and modelized, we used the relationships related to Izana (Izana's altitude is 2367 m), as a first attempt, to extrapolate the aerosol optical thickness ... Article in Journal/Newspaper Aerosol Robotic Network Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |