The assessment of the transposition process for national emission ceilings directive in Turkey

The aim of this study is the assessment of the "National Emission Ceilings Directive" under the European Union environmental acquis to be carried out for Republic of Turkey. In this assessment the economical, institutional and technical perspective of the country is taken into account with regard to the emission management strategies. The datasets of the air quality measurement network are analysed by statistical instruments. The ratios for particulate matter measurements together with the calculations of indicators for ozone pollution are obtained within the needs-analysis for Turkey for the first time. The PM2,5/PM10 ratio is calculated between 0,43-0,67 for Turkey. These ratios show that particulate matter is originated from antropogenic emissions. Additionally AOT40, one of the indicators of ozone pollution values are determined to be very high compared to the limit values of the by-law for air quality. Although the national air quality measurement network results indicate the air quality in cities has improved, the increasing trend in the emission totals of the reported national air pollutant emission inventory shows that implemented sectoral emission management strategies are still not sufficient. Therefore additional efforts are required for sectoral emissions to be reduced with additional measures. The roadmap for this reduction of the emission load is prepared including the aspects for cooperation, national representativeness, data quality, modeling capacity, public awareness and specifically recommendations for the key categories of emission inventory recommendations are underlined. Keywords: Emission inventory, key category, national emission ceilings, emission management strategies, ground-level ozone, modeling, air quality.