Next Article in Journal
Advances in Remote Sensing-Based Disaster Monitoring and Assessment
Previous Article in Journal
Editorial for the Special Issue “Remote Sensing of Water Quality”
Open AccessArticle

Deriving Aerosol Absorption Properties from Solar Ultraviolet Radiation Spectral Measurements at Thessaloniki, Greece

Aristotle University of Thessaloniki, Laboratory of Atmospheric Physics, 54124 Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
Current address: Aosta Valley Regional Environmental Protection Agency (ARPA), 11020 Saint-Christophe, Italy.
Remote Sens. 2019, 11(18), 2179; https://doi.org/10.3390/rs11182179
Received: 31 August 2019 / Revised: 16 September 2019 / Accepted: 17 September 2019 / Published: 19 September 2019
The gap in knowledge regarding the radiative effects of aerosols in the UV region of the solar spectrum is large, mainly due to the lack of systematic measurements of the aerosol single scattering albedo (SSA) and absorption optical depth (AAOD). In the present study, spectral UV measurements performed in Thessaloniki, Greece by a double monochromator Brewer spectrophotometer in the period 1998–2017 are used for the calculation of the aforementioned optical properties. The main uncertainty factors have been described and there is an effort to quantify the overall uncertainties in SSA and AAOD. Analysis of the results suggests that the absorption by aerosols is much stronger in the UV relative to the visible. SSA follows a clear annual pattern ranging from ~0.7 in winter to ~0.85 in summer at wavelengths 320–360 nm, while AAOD peaks in summer and winter. The average AAOD for 2009–2011 is ~50% above the 2003–2006 average, possibly due to increased emissions of absorbing aerosols related to the economic crisis and the metro-railway construction works in the city center. View Full-Text
Keywords: solar UV radiation; aerosol absorption; SSA; AAOD; spectral measurements; aerosol optical properties solar UV radiation; aerosol absorption; SSA; AAOD; spectral measurements; aerosol optical properties
Show Figures

Graphical abstract

MDPI and ACS Style

Fountoulakis, I.; Natsis, A.; Siomos, N.; Drosoglou, T.; Bais, A.F. Deriving Aerosol Absorption Properties from Solar Ultraviolet Radiation Spectral Measurements at Thessaloniki, Greece. Remote Sens. 2019, 11, 2179.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop