Open AccessAerosol types identification during different aerosol events over Sofia, Bulgaria, using sun-photometer and satellite data on the aerosol optical depth and Ångström exponent
Author(s) -
Ts Evgenieva,
Ljuan L. Gurdev,
Eleonora N. Toncheva,
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 - 10.1088/1742-6596/2240/1/012027
Subject(s) - angstrom exponent , aerosol , sun photometer , photometer , satellite , remote sensing , angstrom , environmental science , moderate resolution imaging spectroradiometer , sky , spectroradiometer , meteorology , atmospheric sciences , physics , optics , geology , reflectivity , astronomy , chemistry , crystallography
A series of data was analyzed on the aerosol optical depth (AOD) and the Ångström exponent (AE) over Sofia, Bulgaria, obtained using a Cimel CE318-TS9 ground-based sun/sky/lunar photometer and a space-born Moderate Resolution Imaging Spectroradiometer (MODIS). The results show that in cases of Saharan dust passages over the city the values of AOD 440 at the wavelength of 440 nm fall mainly between 0.15 and 0.50, while those of AE 440/870 are mainly below 1.1, which is in accordance with the existing AOD- and AE-based classifications of the aerosol types. It is shown as well that a reasonable correlation exists between the data on the AOD provided by the CE318-TS9 Cimel sun photometer and those provided by the MODIS mounted on board of Aqua satellite.