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Identifier

000423763

Title

Επίδραση ατμοσφαιρικών ρύπων στην ποιότητα της ατμόσφαιρας της Ανατολικής Κρήτης

Alternative Title

Impact of atmospheric pollutants on air quality of Eastern Crete

Author

Κουβαράκης, Γιώργος Ν.

Thesis advisor

Μιχαλόπουλος, Νικόλαος

Reviewer

Κανακίδου, Μαρία
Περγαντής, Σπύρος

Abstract

The present work focuses on the study of urban atmospheric pollution in the region of Eastern Crete. It focuses mainly on the city of Heraklion during the period 2014-2018, where measurements of particulate mass with a diameter of less than 10 micrometers (PM₁₀ ) and black carbon (BC) took place. The study was part of the collaboration between the Environmental Chemical Processes Laboratory of the Department of Chemistry of the University of Crete and the Region of Crete. Its purpose was to investigate the variation of concentrations of PM₁₀ particles and the determination of their sources in the city of Heraklion, for implementation of the national legislation. At the same time, the impact of the urban pollution in a smaller city, such as that of Agios Nikolaos, was studied within the framework of the activities of the European car-free week of the municipality of Agios Nikolaos in September 2017. In the city of Heraklion the concentrations of PM₁₀ particulates had an average annual value of 27.5 μg/m³ well below the 40 μg/m³ value given by the legislation. All exceedances of the daily PM₁₀ concentration limit, were attributed to more than 98% of dust emissions from the Sahara region. During the work, the biggest episode ever recorded in the area was recorded on March 22, 2018. The black carbon had daily peaks due to fossil fuel combustion and wood burning, to which 25-30% of total combustion aerosol is attributed. In the city of Agios Nikolaos measurements of nitrogen oxides (NO and NOx), black carbon as well as ozone. We were performed found deviation of pollutant levels between working days and non-working. The day without a car had the behavior of a non-working day. All the above measurements were compared with observations from the research station at Finokalia. This comparison is necessary to establish the urban burden on both the city of Heraklion and the city of Agios Nikolaos. In the city of Heraklion the urban burden on the PM₁₀ particles concentration ranges from 9.9% in the summer months to 47.5% in the winter with an annual average of 28.3%.

Language

Greek

Subject

Finokalia

Heraklion

PM10

Sahara dust emissions

Αerosol

Αιωρούμενα σωματίδια

Βlack carbon

Επεισόδια σκόνης Σαχάρας

Ηράκλειο