UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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Conference: Bucharest University Faculty of Physics 2015 Meeting


Section: Atmosphere and Earth Science; Environment Protection


Title:
Vertical and temporal variation of aerosol mass concentration at Magurele – Romania during EMEP/PEGASOS campaign


Authors:
Marius-Mihai CAZACU(1, 2), Ovidiu-Gelu TUDOSE(1, 3), Andreea BOSCORNEA(4, 5), Livius BUZDUGAN(6), Adrian TIMOFTE(1, 7), Doina NICOLAE(8)


Affiliation:
(1) “Alexandru Ioan Cuza” University of Iasi, Faculty of Physics, Bulevardul Carol I, nr. 11, 700506 Iasi, Romania, Atmosphere Optics, Spectroscopy and Lasers Laboratory (LOA-SL Iasi

(2) Physics Department, Gheorghe Asachi Technical University of Iasi, 59A Mangeron Blvd., 700050 Iasi, Romania

(3) SC INOESY SRL, 21 Bradului Street, RO-700660, Iasi, Romania

(4) National Institute for Aerospace Research “Elie Carafoli” (INCAS), 220 I. Maniu Blvd, Bucharest, Romania, RO061126

(5) University of Bucharest, Faculty of Physics, P.O. BOX MG-11, Magurele, Romania, RO771525

(6) Romanian Air Traffic Services Administration (ROMATSA), 10 Ion Ionescu de la

Brad Str., Bucharest, Romania, RO071952

(7) National Meteorological Administration, Regional Forecast Center Bacau, 3 Timpului Str., Bacau, Romania

(8) National Institute for R&D for Optoelectronics, 409 Atomistilor Str., Magurele, Ilfov, Romania, RO771525, email: nnicol@inoe.inoe.ro


E-mail
cazacumarius@gmail.com


Keywords:
aerosol mass concentration, lidar, depolarization, EMEP/PEGASOS campaign


Abstract:
Natural (volcanic activity, desert dust storms) and anthropogenic (fuel combustion, biomass burning etc.) aerosols play an important role in climate changes, as they influence the solar radiation balance on Earth through light scattering and absorption processes. Additionally, both natural (e.g. Saharan dust) and anthropogenic (urban –traffic/industrial from big agglomerations aerosols) are acting as a trigger of the regional meteorology and weather forecast (Belegante et al., 2011; Nemuc et al., 2013). This paper summarizes the temporal and vertical variation of mixed aerosol mass concentration near Bucharest, based on experimental data collected in the 2012 EMEP/PEGASOS campaign. From the series of experimental data collected we emphasize two cases, one for large biomass burning and one for a typical Saharan storm reaching the outskirts of Bucharest. The vertical mass concentrations profiles were determined based on the measurements performed with a multiwavelength depolarization Raman lidar. To assess the aerosol mass concentration using these lidar data, the authors are using the method proposed by Tesche et al., combined with forward simulations (i.e. OPAC) (Tesche et al., 2008; Tesche et al., 2009). The results may contribute to describe, in an improved manner, the contribution of the mixed aerosols (low- or/and high-depolarizing particles) in the atmospheric simulations and models. It can also be used for operational purposes, such as near real time assessment of aerosol load (e.g. volcanic ash)


References:

Belegante L., Talianu C., Nemuc A.V., Nicolae D., 2011. Detection of local weather events from multiwavelength lidar measurements during the EARLI09 campaign. Rom. Journ. Phys. 56 (3-4), 484-494.

Nemuc A., Vasilescu J., Talianu C., Belegante L., Nicolae D., 2013. Assessment of aerosol's mass concentrations from measured linear particle depolarization ratio (vertically resolved) and simulations. Atmos. Meas. Tech. Discuss. (6), 5923-5957.

Tesche M., Ansmann A., Müller D., Althausen D., Mattis I., 2008. Vertical profiling of Saharan dust with Raman lidars and airborne HSRL in southern Morocco during SAMUM. Tellus B61, 144 – 164.

Tesche M., Ansmann A., Müller D., Althausen D., Engelmann R., Freudenthaler V., Groß S., 2009. Vertically resolved separation of dust and smoke over Cape Verde using multiwavelength Raman and polarization lidars during Saharan Mineral Dust Experiment 2008. J. Geophys.Res. 114, D13202.

Acknowledgement:
This work was supported a grant of the STAR–ESA Programme 38/2012-CAPESA and by the strategic grant POSDRU/159/1.5/S/137750, Project “Doctoral and Postdoctoral programs support for increased competitiveness in Exact Sciences research” cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007 – 2013.