Observations of the aerosols vertical distribution and an assessment of their optical properties on clear sunny days and days with Saharan dust intrusions were carried out in the summer of 2016 in the mountain valley of Sofia, Bulgaria. In this paper, some of the results obtained during Saharan dust intrusions are presented. Measurements were carried out with active and passive remote sensing devices as well as with in-situ ones. A ceilometer CHM-15k, a sun photometer Microtops II, an ozonometer Microtops II and a laser particle counter (LPC) PC 200 were used. The atmospheric boundary layer (ABL) height was determined from the high temporal and spatial resolution ceilometer data and from aerological sounding. The changes in fine particle concentration in space and time were measured by the six-channel LPC located in the Borisova Gradina Park, Sofia. HYSPLIT back trajectory model and the BSC-DREAM dust model were used as additional source of information for selected days. The observed ABL height varied from 200 to 2500 m for the presented experimental days. During the campaign, the aerosol optical depth (AOD) at wavelength λ = 380 nm ranged from 0.30 to 0.56, at λ = 500nm - from 0.18 to 0.30 and at λ = 1020 nm - from 0.01 to 0.10. The water vapor content (WVC) changed between 1.5 cm and 2.1 cm. The total ozone content (TOC) varied from 225 DU to 275 DU.
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26 February 2019
10TH JUBILEE INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION
26–30 August 2018
Sofia, Bulgaria
Research Article|
February 26 2019
Investigation of the atmospheric boundary layer and optical characteristics of the atmospheric aerosols over Sofia in summer 2016
Nikolay Kolev;
Nikolay Kolev
a)
1
Department of Physics, University of Mining and Geology “St. Ivan Rilski”
, Sofia, Bulgaria
2
Institute of Electronics, Bulgarian Academy of Sciences
, Sofia, Bulgaria
a)Corresponding author:nic_k@abv.bg
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Plamen Savov;
Plamen Savov
1
Department of Physics, University of Mining and Geology “St. Ivan Rilski”
, Sofia, Bulgaria
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Tsvetelina Evgenieva;
Tsvetelina Evgenieva
2
Institute of Electronics, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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Nikolay Miloshev;
Nikolay Miloshev
3
National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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Orlin Gueorguiev;
Orlin Gueorguiev
4
National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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Ekaterina Batchvarova;
Ekaterina Batchvarova
4
National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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Maria Kolarova;
Maria Kolarova
4
National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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Ventsislav Danchovski;
Ventsislav Danchovski
5
Department of Meteorology and Geophysics, Faculty of Physics, Sofia University “St. Kliment Ohridsky”
, Sofia, Bulgaria
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Danko Ivanov;
Danko Ivanov
5
Department of Meteorology and Geophysics, Faculty of Physics, Sofia University “St. Kliment Ohridsky”
, Sofia, Bulgaria
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Doino Petkov
Doino Petkov
6
Space Research and Technology Institute, Bulgarian Academy of Sciences
, Sofia, Bulgaria
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a)Corresponding author:nic_k@abv.bg
AIP Conf. Proc. 2075, 120004 (2019)
Citation
Nikolay Kolev, Plamen Savov, Tsvetelina Evgenieva, Nikolay Miloshev, Orlin Gueorguiev, Ekaterina Batchvarova, Maria Kolarova, Ventsislav Danchovski, Danko Ivanov, Doino Petkov; Investigation of the atmospheric boundary layer and optical characteristics of the atmospheric aerosols over Sofia in summer 2016. AIP Conf. Proc. 26 February 2019; 2075 (1): 120004. https://doi.org/10.1063/1.5091262
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