Ground-based off-line aerosol measurements at Praia, Cape Verde, during the Saharan Mineral Dust Experiment: microphysical properties and mineralogy (CROSBI ID 260501)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kandler, K. ; Schütz, L. ; Jäckel, S. ; Lieke, K. ; Emmel, C. ; Müller-Ebert, D. ; Ebert, M. ; Scheuvens, D. ; Schladitz, A. ; Šegvić, Branimir ; Wiedensohler, A. ; Weinbruch, S.
engleski
Ground-based off-line aerosol measurements at Praia, Cape Verde, during the Saharan Mineral Dust Experiment: microphysical properties and mineralogy
A large field experiment of the Saharan Mineral Dust Experiment (SAMUM) was performed in Praia, Cape Verde, in January and February 2008. This work reports on the aerosol mass concentrations, size distributions and mineralogical composition of the aerosol arriving at Praia. Three dust periods were recorded during the measurements, divided by transitional periods and embedded in maritime‐ influenced situations. The total suspended particle mass/PM10/PM2.5 were 250/180/74 μg/m3 on average for the first dust period (17–21 January) and 250/230/83 μg/m3 for the second (24–26 January). The third period (28 January to 2 February) was the most intensive with 410/340/130 μg/m3. Four modes were identified in the size distribution. The first mode (50–70 nm) and partly the second (700–1100 nm) can be regarded as of marine origin, but some dust contributes to the latter. The third mode (2–4 μm) is dominated by advected dust, while the intermittently occurring fourth mode (15–70 μm) may have a local contribution. The dust consisted of kaolinite (dust/maritime period: 35%wt./25%wt.), K‐feldspar (20%wt./25%wt.), illite (14%wt./10%wt.), quartz (11%wt./8%wt.), smectites (6%wt./4%wt.), plagioclase (6%wt./1%wt.), gypsum (4%wt./7%wt.), halite (2%wt./17%wt.) and calcite (2%wt./3%wt.).
dust ; aerosol ; clay particles ; microphysical properties
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Podaci o izdanju
63 (4)
2011.
459-474
objavljeno
0280-6509
1600-0889
10.1111/j.1600-0889.2011.00546.x
Povezanost rada
Geologija, Geofizika, Interdisciplinarne prirodne znanosti