Arid
DOI10.5194/acp-15-9173-2015
Dust-air pollution dynamics over the eastern Mediterranean
Abdelkader, M.1; Metzger, S.1,2; Mamouri, R. E.3; Astitha, M.4; Barrie, L.5; Levin, Z.1,6; Lelieveld, J.1,2
通讯作者Abdelkader, M.
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2015
卷号15期号:16页码:9173-9189
英文摘要

Interactions of desert dust and air pollution over the eastern Mediterranean (EM) have been studied, focusing on two distinct dust transport events on 22 and 28 September 2011. The atmospheric chemistry-climate model EMAC has been used at about 50 km grid spacing, applying an on-line dust emission scheme and calcium as a proxy for dust reactivity. EMAC includes a detailed tropospheric chemistry mechanism, aerosol microphysics and thermodynamics schemes to describe dust "aging". The model is evaluated using ground-based observations for aerosol concentrations and aerosol optical depth (AOD) as well as satellite observations. Simulation results and back trajectory analysis show that the development of synoptic disturbances over the EM can enhance dust transport from the Sahara and Arabian deserts in frontal systems that also carry air pollution to the EM. The frontal systems are associated with precipitation that controls the dust removal. Our results show the importance of chemical aging of dust, which increases particle size, dust deposition and scavenging efficiency during transport, overall reducing the lifetime relative to non-aged dust particles. The relatively long travel periods of Saharan dust result in more sustained aging compared to Arabian dust. Sensitivity simulations indicate 3 times more dust deposition of aged relative to pristine dust, which significantly decreases the dust lifetime and loading.


类型Article
语种英语
国家Cyprus ; Germany ; USA ; Sweden ; Israel
收录类别SCI-E
WOS记录号WOS:000360646500006
WOS关键词CHEMISTRY-CLIMATE MODEL ; MINERAL DUST ; POLARIZATION LIDAR ; SAHARAN DUST ; TECHNICAL NOTE ; AEROSOL ; PARTICLES ; TRANSPORT ; CLOUDS ; ICE
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186058
作者单位1.Cyprus Inst, Energy Environm & Water Res Ctr, CY-2121 Nicosia, Cyprus;
2.Max Planck Inst Chem, Air Chem Dept, D-55128 Mainz, Germany;
3.Cyprus Univ Technol, Dept Civil Engn & Geomat, CY-3036 Limassol, Cyprus;
4.Univ Connecticut, Dept Civil Engn, Storrs, CT 06269 USA;
5.Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden;
6.Tel Aviv Univ, IL-39040 Tel Aviv, Israel
推荐引用方式
GB/T 7714
Abdelkader, M.,Metzger, S.,Mamouri, R. E.,et al. Dust-air pollution dynamics over the eastern Mediterranean[J],2015,15(16):9173-9189.
APA Abdelkader, M..,Metzger, S..,Mamouri, R. E..,Astitha, M..,Barrie, L..,...&Lelieveld, J..(2015).Dust-air pollution dynamics over the eastern Mediterranean.ATMOSPHERIC CHEMISTRY AND PHYSICS,15(16),9173-9189.
MLA Abdelkader, M.,et al."Dust-air pollution dynamics over the eastern Mediterranean".ATMOSPHERIC CHEMISTRY AND PHYSICS 15.16(2015):9173-9189.
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