Open AccessCharacterization of the aerosol field over Sofia, Bulgaria, using contact and passive-remote-sensing methods and instruments
Author(s) -
Ts Evgenieva,
Nikolay Ivanov Kolev,
Plamen Savov,
Ljuan L. Gurdev,
Иван Григоров,
Tanja N. Dreischuh
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2240/1/012028
Subject(s) - aerosol , angstrom exponent , environmental science , atmosphere (unit) , particulates , atmospheric sciences , wavelength , meteorology , remote sensing , physics , optics , chemistry , geography , organic chemistry
The atmospheric aerosol particles, called also atmospheric particulate matter, that include also fine dust particles (FDP), are an important factor conditioning many physical processes in the atmosphere, affecting the climate and the air quality, and posing serious potential risks to the human health. In this regard, the regular observation of the atmospheric aerosol load and its dynamics is a valuable source of scientific information concerning these processes, while also allowing the relevant institutions to undertake preventive measures in cases of a dangerous FDP concentration increase. This work is devoted to estimating experimentally, by passive optical sensing and contact measurements, some important integral microphysical and optical characteristics and their dynamics of the aerosol ensembles over Sofia, Bulgaria. The results obtained outline the springtime values of the aerosol number and mass concentration in the near-ground urban atmosphere, the depth of the atmospheric boundary layer, the aerosol optical depth at different optical wavelengths, the water vapor content, and the Ångström exponent at the wavelengths of 440/870 nm.