Determination of the Contribution of Dust and Sea Salt Transport to the Particulate Matter 10 Levels Recorded in the Muğla Province

Date

2024-4-26

Author

Yetgin Baykal, Funda

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In Türkiye and southern Europe, compliance with PM10 standards is not easy due to influence of North African dust and Arabian, Middle Eastern and Asian crustal dusts. Additional non-anthropogenic factors such as sea salt aerosols, forest fires and volcanic activities also contribute. A better understanding of the natural contribution is essential for better management of air quality in Türkiye. In this study, contribution of the natural dust sources, mainly African dust and sea salt aerosols, to the PM10 levels in the Muğla province was quantified for 2014-2018. The analysis was performed according to the relevant Guidance of the European Commission, with the utilization of air quality monitoring stations’ data including rural data (PM10 and elemental concentrations) from Marmaris, satelite products, aerosol models and backtrajectories. Altitude differences and data gaps were of concern and different statistical methods were tried. Forest fires were found responsible for exceedance of daily limit of the CAFÉ Directive on two dates. Daily volcanic activity contribution reached 4.6 ug/m3. The non-African arid regions were found to contribute on 122 days within 1404 dates. The average combined natural contributions were calculated for only 32 dates possessing all necessary data, and the highest was found as 17% annual contribution at a coastal station. The main uses of the results are expected to be, firstly, a better understanding of natural dust contribution to Muğla province and analysis tools, and secondly, the use of such data within the framework of the CAFÉ Directive and for deriving air quality measures pertinent to the remaining emissions.

Subject Keywords

North Africa, Particulate Matter, Backtrajectory, Satellite, Volcano

URI

https://hdl.handle.net/11511/109841

Collections

Graduate School of Natural and Applied Sciences, Thesis