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Abstract
In order to mitigate the catastrophic effects of the climate crisis, it is imperative to curtail greenhouse gas (GHG) emissions and the increase in global average temperature should be limited to 1.5°C if possible. Globally, cities are responsible for 70% of GHG emissions. Emissions from transportation in cities constitute an important source of these emissions. Approximately 95% of Türkiye’s transportation-related GHG emissions come from roads. Determining the amount of GHG emissions calculated in accordance with international standards at the city scale can contribute to emission reduction efforts. In this study, emissions from road transportation were calculated for Kocaeli Province between 2015-2021. The GHG emission results obtained by using two different calculation methods within the framework of the Intergovernmental Panel on Climate Change's guideline Tier 1 approach were compared and the amount of GHG emissions per capita from road transportation was calculated. Although GHG emissions from road transportation in Türkiye have increased over the years, the amount of emissions from road transportation has decreased in the 2015-2021 period for Kocaeli Province. In 2015, the calculated emission amount was 2,964.17 kt CO2-eq. In 2021, this amount decreased by 2.31% and was calculated as 2,895.65 kt CO2-eq. The ratio of Kocaeli's average road transport related emissions between 2015-2020 to Türkiye’s average transport related GHG emissions between 2015-2020 is 3.71%, and the ratio of Kocaeli's average road transport related GHG emissions to Türkiye’s average transport related GHG emissions between 2015-2020 is 3.99%.
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