Analysis of Mineral Aerosol in the Surface Layer over the Caspian Lowland Desert by the Data of 12 Summer Field Campaigns in 2002–2020
| Autor: | K. A. Shukurov, Dina P. Gubanova, Otto Chkhetiani, M. S. Artamonova, N. V. Vazaeva, F. A. Kozlov, Tatyana M. Kuderina, Leonid Maksimenkov, Alexander Chernokulsky |
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| Rok vydání: | 2021 |
| Předmět: |
Atmospheric Science
European arid lands 010504 meteorology & atmospheric sciences Planetary boundary layer mineral aerosol 010501 environmental sciences Environmental Science (miscellaneous) Atmospheric sciences 01 natural sciences Wind speed atmospheric boundary layer Flux (metallurgy) Meteorology. Climatology emission Mass concentration (chemistry) satellite data 0105 earth and related environmental sciences aerosol composition aerosol transport south of Russia Entrainment (meteorology) Arid Aerosol Deposition (aerosol physics) field measurements Environmental science QC851-999 |
| Zdroj: | Atmosphere, Vol 12, Iss 985, p 985 (2021) Atmosphere Volume 12 Issue 8 |
| ISSN: | 2073-4433 |
| DOI: | 10.3390/atmos12080985 |
| Popis: | In-situ knowledge on characteristics of mineral aerosols is important for weather and climate prediction models, particularly for modeling such processes as the entrainment, transport and deposition of aerosols. However, field measurements of the dust emission flux, dust size distribution and its chemical composition under realistic wind conditions remain rare. In this study, we present experimental data over annual expeditions in the arid and semi-arid zones of the Caspian Lowland Desert (Kalmykia, south of Russia) we evaluate characteristics of mineral aerosol concentration and fluxes, estimate its chemical composition and calculate its long-distance transport characteristics. The mass concentration in different years ranges from several tens to several hundred of μg m–3. The significant influence of wind velocity on the value of mass and counting concentration and on the proposed entrainment mechanisms is confirmed. An increased content of anthropogenic elements (S, Sn, Pb, Bi, Mo, Ag, Cd, Hg, etc.), which is characteristic for all observation points in the south of the European Russia, is found. The trajectory analysis show that long-range air particles transport from the Caspian Lowland Desert to the central regions of European Russia tends to increase in the recent decades. |
| Databáze: | OpenAIRE |
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