Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data
This study evaluates model simulated dust aerosols over North Africa and the North Atlantic from five global models that participated in the AeroCom phase II model experiments. The model results are compared with satellite aerosol optical depth (AOD) data from MODIS, MISR, and SeaWiFS, dust optical...
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ftjrc:oai:publications.jrc.ec.europa.eu:JRC90055 2024-09-09T19:56:34+00:00 Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data KIM Dongchul CHIN Mian YU Hongbin DIEHL T. TAN Q. KAHN R. A. TSIGARIDIS K. BAUER S. TAKEMURA T. POZZOLI Luca BELLOUIN Nicolas SCHULZ Michael PEYRIDIEU Sophie CHÉDIN Alain KOFFI LEFEIVRE Brigitte 2014 Print https://publications.jrc.ec.europa.eu/repository/handle/JRC90055 http://onlinelibrary.wiley.com/doi/10.1002/2013JD021099/abstract https://doi.org/10.1002/2013JD021099 eng eng AMER GEOPHYSICAL UNION JRC90055 2014 ftjrc https://doi.org/10.1002/2013JD021099 2024-07-22T04:42:16Z This study evaluates model simulated dust aerosols over North Africa and the North Atlantic from five global models that participated in the AeroCom phase II model experiments. The model results are compared with satellite aerosol optical depth (AOD) data from MODIS, MISR, and SeaWiFS, dust optical depth (DOD) derived from MODIS and MISR, AOD and coarse-mode AOD (as a proxy of DOD) from ground-based AERONET sunphotometer measurements, and dust vertical distributions/centroid height from CALIOP and AIRS satellite AOD retrievals. We examine the following quantities of AOD and DOD: (1) the magnitudes over land and over ocean in our study domain, (2) the longitudinal gradient from the dust source region over North Africa to the western North Atlantic, (3) seasonal variations at different locations, and (4) the dust vertical profile shape and the AOD centroid height (altitude above or below which half of the AOD is located). The different satellite data show consistent features in most of these aspects, however the models display large diversity in all of them, with significant differences among the models and between models and observations. By examining dust emission, removal, and mass extinction efficiency in the five models, we also find remarkable differences among the models that all contribute to the discrepancies of model simulated dust amount and distribution. This study highlights the challenges in simulating the dust physical and optical processes, even in the best-known dust environment, and stresses the need for observable quantities to constrain the model processes. JRC.H.2 - Air and Climate Other/Unknown Material North Atlantic Joint Research Centre, European Commission: JRC Publications Repository Journal of Geophysical Research: Atmospheres 119 10 6259 6277 |
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Open Polar |
collection |
Joint Research Centre, European Commission: JRC Publications Repository |
op_collection_id |
ftjrc |
language |
English |
description |
This study evaluates model simulated dust aerosols over North Africa and the North Atlantic from five global models that participated in the AeroCom phase II model experiments. The model results are compared with satellite aerosol optical depth (AOD) data from MODIS, MISR, and SeaWiFS, dust optical depth (DOD) derived from MODIS and MISR, AOD and coarse-mode AOD (as a proxy of DOD) from ground-based AERONET sunphotometer measurements, and dust vertical distributions/centroid height from CALIOP and AIRS satellite AOD retrievals. We examine the following quantities of AOD and DOD: (1) the magnitudes over land and over ocean in our study domain, (2) the longitudinal gradient from the dust source region over North Africa to the western North Atlantic, (3) seasonal variations at different locations, and (4) the dust vertical profile shape and the AOD centroid height (altitude above or below which half of the AOD is located). The different satellite data show consistent features in most of these aspects, however the models display large diversity in all of them, with significant differences among the models and between models and observations. By examining dust emission, removal, and mass extinction efficiency in the five models, we also find remarkable differences among the models that all contribute to the discrepancies of model simulated dust amount and distribution. This study highlights the challenges in simulating the dust physical and optical processes, even in the best-known dust environment, and stresses the need for observable quantities to constrain the model processes. JRC.H.2 - Air and Climate |
author |
KIM Dongchul CHIN Mian YU Hongbin DIEHL T. TAN Q. KAHN R. A. TSIGARIDIS K. BAUER S. TAKEMURA T. POZZOLI Luca BELLOUIN Nicolas SCHULZ Michael PEYRIDIEU Sophie CHÉDIN Alain KOFFI LEFEIVRE Brigitte |
spellingShingle |
KIM Dongchul CHIN Mian YU Hongbin DIEHL T. TAN Q. KAHN R. A. TSIGARIDIS K. BAUER S. TAKEMURA T. POZZOLI Luca BELLOUIN Nicolas SCHULZ Michael PEYRIDIEU Sophie CHÉDIN Alain KOFFI LEFEIVRE Brigitte Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
author_facet |
KIM Dongchul CHIN Mian YU Hongbin DIEHL T. TAN Q. KAHN R. A. TSIGARIDIS K. BAUER S. TAKEMURA T. POZZOLI Luca BELLOUIN Nicolas SCHULZ Michael PEYRIDIEU Sophie CHÉDIN Alain KOFFI LEFEIVRE Brigitte |
author_sort |
KIM Dongchul |
title |
Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
title_short |
Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
title_full |
Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
title_fullStr |
Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
title_full_unstemmed |
Sources, sinks, and transatlantic transport of North African dust aerosol: A multi-model analysis and comparison with remote-sensing data |
title_sort |
sources, sinks, and transatlantic transport of north african dust aerosol: a multi-model analysis and comparison with remote-sensing data |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2014 |
url |
https://publications.jrc.ec.europa.eu/repository/handle/JRC90055 http://onlinelibrary.wiley.com/doi/10.1002/2013JD021099/abstract https://doi.org/10.1002/2013JD021099 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
JRC90055 |
op_doi |
https://doi.org/10.1002/2013JD021099 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
119 |
container_issue |
10 |
container_start_page |
6259 |
op_container_end_page |
6277 |
_version_ |
1809927316483080192 |