Temporal variations and sources of Eastern Mediterranean aerosols based on a 9-year observation

Date

2012-12-01

Author

ÖZTÜRK, FATMA
zararsız, Abdullah
Dutkiewicz, V. A.
Husain, L.
Hopke, P. K.
Tuncel, Süleyman Gürdal

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

221
views

0
downloads

Concentrations of 48 elements, NO3-, SO42-, CI-, NH4+ and black carbon (BC) were determined in PM10 aerosols collected daily at a rural Eastern Mediterranean (EM) site (Antalya, 30.34 degrees E, 36.47 degrees N) from 1993 to 2001. Temporal variations (daily, seasonal and long term), sources and source regions of EM aerosols were delineated. Concentrations of elements with marine and crustal origin were more episodic as compared to anthropogenic ones. Most of the variables showed well defined seasonal cycles. Concentrations of crustal elements increased in summer while winter concentrations of marine elements were considerably higher than in summer. Trends in concentrations were analyzed using the Kendall test. Essentially, all elements showed decreasing trends. Sen's slope was applied to find the magnitude of the trends. The annual rate of decrease was found to change from 0.001 to 209 ng m(-3). A receptor-based model. Positive Matrix Factorization (PMF), resolved five factors influencing the chemical composition of EM aerosols as airborne dust, oil combustion, coal combustion, motor vehicle emissions and sea salt. Potential Source Contribution Function (PSCF) analysis was performed to identify the likely areas influencing the chemical composition of aerosol samples. Local and remote sources were detected for the factors resolved by PMF. PSCF maps including backward trajectories at starting height of 900 hPa have indicated that North Africa is the major source contributing to the concentrations of variables associated with dust factor.

Subject Keywords

Eastern Mediterranean (EM), Aerosol, Trend Analysis, PMF, PSCF

URI

https://hdl.handle.net/11511/31315

Journal

ATMOSPHERIC ENVIRONMENT

DOI

https://doi.org/10.1016/j.atmosenv.2012.07.051

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Spatio-temporal aerosol trace metal concentrations and sources in the Levantine Basin of the Eastern Mediterranean Koçak, Mustafa; Kubilay, N; Herut, B (2004-05-01) The current study considers the spatial and temporal variability in aerosol trace metal concentrations (Al, Fe, Mn, Cr, Cu, Pb, Cd, Zn) in the Levantine Basin of the Eastern Mediterranean, utilising an extensive sample library (n = 621) collected between 1999 and 2001, at two coastal sites located at the northern, Erdemli (Turkey) and southeastern, Tel Shikmona (TS, Israel), region of the Basin. A critical evaluation of the datasets from the two locations was presented. Enhanced concentrations of Al (1.7 x)...
Temporal variability of atmospheric trace element concentrations over the eastern Mediterranean Sea GÜLLÜ, GÜLEN; Ölmez, İlhan; Tuncel, Süleyman Gürdal (2000-07-01) Concentrations of elements and ions measured in aerosol samples collected between March 1992 and December 1993 were investigated to understand temporal variability of elemental concentrations. Collected samples were analyzed by atomic absorption spectrometry, instrumental neutron activation analysis, ion chromatography and colorimetry for approximately 40 elements and major ionic species. Concentrations of elements were found to vary greatly on time scales ranging from days to seasons. Short-term variations...
Size distribution of trace elements and major ions in the eastern Mediterranean atmosphere Kuloglu, E; Tuncel, Süleyman Gürdal (2005-10-01) Size distribution of trace elements is measured at the Mediterranean coast of Turkey, by analyzing hi-vol impactor samples collected between August 1993 and May 1994. Mass median diameters of marine elements are between 4.6 and 5.3 mu m, and those of crustal elements are between 3.0 and 3.5 mu m. Mass median diameters of crustal elements are 30% smaller in samples impacted by Saharan Dust. Pollution derived elements, As, Cd, Mo, Pb, Se, and Zn have MMD's between 1.25 and 1.01 mu m. Although 70-90% of the ma...
Seasonal variability of optical properties of aerosols in the Eastern Mediterranean Vrekoussis, M; Liakakou, E; Koçak, Mustafa; Kubilay, N; Oikonomou, K; Sciare, J; Mihalopoulos, N (2005-12-01) The aerosol optical properties (scattering and absorption coefficients) were investigated at two remote locations in the Eastern Mediterranean in conjunction with aerosol ion composition measurements: Finokalia in the Crete Island in Greece (March 2001-June 2002) and Erdemli in Turkey (July 1999-June 2000). Ambient light-scattering coefficient (sigma(sp-532 nm)) at Finokalia had a mean value of 50 +/- 23 Mm(-1) while at Erdemli this value was 90 +/- 160 Mm(-1), due to a severe dust event that occurred from ...
Atmospheric trace element and major ion concentrations over the eastern Mediterranean Sea: Identification of anthropogenic source regions GÜLLÜ, GÜLEN; DOĞAN, GÜRAY; Tuncel, Süleyman Gürdal (2005-11-01) Concentrations of elements and ions measured in aerosol samples collected from March 1992 to the end of December 1993 were investigated to identify source regions affecting chemical composition of aerosols in the eastern Mediterranean atmosphere. Collected samples were analyzed for approximately 40 elements and ions using a combination of atomic absorption spectrometry, instrumental neutron activation analysis, ion chromatography and colorimetry. Statistical techniques, such as enrichment factors and a non-...

Citation Formats

F. ÖZTÜRK, A. zararsız, V. A. Dutkiewicz, L. Husain, P. K. Hopke, and S. G. Tuncel, “Temporal variations and sources of Eastern Mediterranean aerosols based on a 9-year observation,” ATMOSPHERIC ENVIRONMENT, pp. 463–475, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31315.