Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model
The chemistry and transport model CHIMERE-DUST have been used to simulate the mineral dust cycle over the Sahara in 2006. Surface measurements deployed during the AMMA field campaign allow to test the capability of the model to correctly reproduce the atmospheric dust load and surface concentrations...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2011-07-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/11/7185/2011/acp-11-7185-2011.pdf |
| _version_ | 1819081896429092864 |
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| author | C. Schmechtig B. Marticorena B. Chatenet G. Bergametti J. L. Rajot A. Coman |
| author_facet | C. Schmechtig B. Marticorena B. Chatenet G. Bergametti J. L. Rajot A. Coman |
| author_sort | C. Schmechtig |
| collection | DOAJ |
| description | The chemistry and transport model CHIMERE-DUST have been used to simulate the mineral dust cycle over the Sahara in 2006. Surface measurements deployed during the AMMA field campaign allow to test the capability of the model to correctly reproduce the atmospheric dust load and surface concentrations from the daily to the seasonal time-scale. The simulated monthly mean Aerosol Optical Depths (AOD) and surface concentrations are significantly correlated with the measured ones. The simulated daily concentrations and hourly AOD are in the same range of magnitude than the observed ones despite relatively high simulated dust emissions. The level of agreement between the simulations and the observations has been quantified at different time scales using statistical parameters classically used to evaluate air quality models. The capability of the model to reproduce the altitude of the dust transport was tested for two contrasted cases of low and high altitude transport. These results highlight the sensitivity of the simulations to the surface winds used as external forcing and the necessity to further constrain the dust mass budget at the regional scale. |
| first_indexed | 2024-12-21T20:08:04Z |
| format | Article |
| id | doaj.art-c7b26eafb22e42aeb949e57aacf48655 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-21T20:08:04Z |
| publishDate | 2011-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-c7b26eafb22e42aeb949e57aacf486552022-12-21T18:51:48ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242011-07-0111147185720710.5194/acp-11-7185-2011Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST modelC. SchmechtigB. MarticorenaB. ChatenetG. BergamettiJ. L. RajotA. ComanThe chemistry and transport model CHIMERE-DUST have been used to simulate the mineral dust cycle over the Sahara in 2006. Surface measurements deployed during the AMMA field campaign allow to test the capability of the model to correctly reproduce the atmospheric dust load and surface concentrations from the daily to the seasonal time-scale. The simulated monthly mean Aerosol Optical Depths (AOD) and surface concentrations are significantly correlated with the measured ones. The simulated daily concentrations and hourly AOD are in the same range of magnitude than the observed ones despite relatively high simulated dust emissions. The level of agreement between the simulations and the observations has been quantified at different time scales using statistical parameters classically used to evaluate air quality models. The capability of the model to reproduce the altitude of the dust transport was tested for two contrasted cases of low and high altitude transport. These results highlight the sensitivity of the simulations to the surface winds used as external forcing and the necessity to further constrain the dust mass budget at the regional scale.http://www.atmos-chem-phys.net/11/7185/2011/acp-11-7185-2011.pdf |
| spellingShingle | C. Schmechtig B. Marticorena B. Chatenet G. Bergametti J. L. Rajot A. Coman Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model Atmospheric Chemistry and Physics |
| title | Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model |
| title_full | Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model |
| title_fullStr | Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model |
| title_full_unstemmed | Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model |
| title_short | Simulation of the mineral dust content over Western Africa from the event to the annual scale with the CHIMERE-DUST model |
| title_sort | simulation of the mineral dust content over western africa from the event to the annual scale with the chimere dust model |
| url | http://www.atmos-chem-phys.net/11/7185/2011/acp-11-7185-2011.pdf |
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