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| Titel |
The MACC-II 2007–2008 reanalysis: atmospheric dust evaluation and characterization over northern Africa and the Middle East |
| VerfasserIn |
E. Cuevas, C. Camino, A. Benedetti, S. Basart, E. Terradellas, J. M. Baldasano, J. J. Morcrette, B. Marticorena, P. Goloub, A. Mortier, A. Berjón, Y. Hernández, M. Gil-Ojeda, M. Schulz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 8 ; Nr. 15, no. 8 (2015-04-16), S.3991-4024 |
| Datensatznummer |
250119648
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| Publikation (Nr.) |
 copernicus.org/acp-15-3991-2015.pdf |
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| Zusammenfassung |
| In the present work, atmospheric mineral dust from a MACC-II short
reanalysis run for 2 years (2007–2008) has been evaluated over
northern Africa and the Middle East using satellite aerosol products
(from MISR, MODIS and OMI satellite sensors), ground-based AERONET
data, in situ PM10 concentrations from AMMA, and
extinction vertical profiles from two ground-based lidars and
CALIOP satellite-based lidar. The MACC-II aerosol optical depth (AOD) spatial and temporal
(seasonal and interannual) variability shows good agreement with
those provided by satellite sensors. The capability of the model to
reproduce the AOD, Ångström exponent (AE) and dust optical depth
(DOD) from daily to seasonal time-scale is quantified over 26 AERONET stations located in eight geographically distinct
regions by using statistical parameters. Overall DOD seasonal
variation is fairly well simulated by MACC-II in all regions,
although the correlation is significantly higher in dust transport
regions than in dust source regions. The ability of MACC-II in
reproducing dust vertical profiles has been assessed by comparing
seasonal averaged extinction vertical profiles simulated by MACC-II
under dust conditions with corresponding extinction profiles
obtained with lidar instruments at M'Bour and Santa Cruz de
Tenerife, and with CALIOP. We find a good agreement in dust layers
structures and averaged extinction vertical profiles between
MACC-II, the lidars and CALIOP above the marine boundary layer from
1 to 6 km. Surface dust daily mean concentrations from
MACC-II reanalysis has been evaluated with daily averaged
PM10 at three monitoring stations of the Sahelian Dust
Transect. MACC-II correctly reproduces daily to interannual surface
dust concentration variability, although it underestimates daily and
monthly means all year long, especially in winter and early spring
(dry season). MACC-II reproduces well the dust variability recorded
along the station transect which reflects the variability in dust
emission by different Saharan sources, but fails in reproducing the
sporadic and very strong dust events associated to mesoscale
convective systems during the wet season. |
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