Seventeen-year systematic measurements of dust aerosol optical properties using the eole ntua lidar system (2000-2016)
| Autor: | Soupiona Ourania, Mylonaki Maria, Papayannis Alexandros, Argyrouli Athina, Kokkalis Panayotis, Tsaknakis Georgios |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | EPJ Web of Conferences, Vol 176, p 05029 (2018) |
| Druh dokumentu: | article |
| ISSN: | 2100-014X 20181760 |
| DOI: | 10.1051/epjconf/201817605029 |
| Popis: | A comprehensive analysis of the seasonal variability of the optical properties of Saharan dust aerosols over Athens, Greece, is presented for a 17-year time period (2000-2016), as derived from multi-wavelength Raman lidar measurements (57 dust events with more than 80 hours of measurements). The profiles of the derived aerosol optical properties (aerosol backscatter and extinction coefficients, lidar ratio and aerosol Ångström exponent) at 355 nm are presented. For these dust events we found a mean value of the lidar ratio of ~52±13 sr at 355 nm and of ~58±8 sr (not shown) at 532 nm (2-4 km a.s.l. height). For our statistical analysis, presented here, we used monthly-mean values and time periods under cloud-free conditions. The number of dust events was greatest in late spring, summer, and early autumn periods. In this paper we also present a selected case study (04 April 2016) of desert dust long-range transport from the Saharan desert. |
| Databáze: | Directory of Open Access Journals |
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