Evaluation of NOx emissions for Turkey using satellite and ground-based observations

Ecem Oner; Burcak Kaynak

doi:10.1016/j.apr.2015.10.017

Evaluation of NO_x emissions for Turkey using satellite and ground-based observations

Ecem Oner, Burcak Kaynak^*

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The aim of this study was to evaluate NO_x emissions from available inventories using satellite NO₂ retrievals for Turkey. NO_x emissions from two available inventories (EMEP and TNO) were compared with each other, differences and similarities were determined. NO_x emission inventories were also compared with OMI NO₂ satellite retrievals. Correlation coefficients (R²) between parameters and emissions were found in the range of 0.29-0.69 for selected high populated cities. OMI NO₂ satellite retrievals overpass NO₂ ground observation stations were also processed and the correlation between these observations for selected cities were found highest in summer and lowest in fall and winter. According to the comparison for individual cities, good correlations were observed for Ankara (R² = 0.62), Izmir (R² = 0.59) and Istanbul (R² = 0.90). Weekly profiles and weekend/weekday ratios for ground-based and OMI NO₂ observations were calculated and weekly profiles used for EMEP were also compared with observed weekly profiles. Findings showed that OMI is able to detect polluted regions in Turkey, but there are discrepancies between OMI and ground-based NO₂ observations. Results also indicated issues on NO_x emissions of large scale power plants in EMEP emission inventory for Turkey.

Original language	English
Pages (from-to)	419-430
Number of pages	12
Journal	Atmospheric Pollution Research
Volume	7
Issue number	3
DOIs	https://doi.org/10.1016/j.apr.2015.10.017
Publication status	Published - 1 May 2016

Bibliographical note

Publisher Copyright:
© 2015 Turkish National Committee for Air Pollution Research and Control.

Funding

This research is supported by Marie Curie International Reintegration Grant PIRG08-GA-2010-277092 (IMNOXE) from the European Commission and National Scholarship Programme (Priority Areas) (2210-C) graduate scholarship from Scientific and Technological Research Council of Turkey (TUBITAK). The researchers also thank TNO for sharing the AQMEII emission inventory.

Funders	Funder number
IMNOXE
National Scholarship Programme
TUBITAK
European Commission
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Keywords

NO
NO emissions
OMI
Remote sensing

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apr.2015.10.017

Cite this

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abstract = "The aim of this study was to evaluate NOx emissions from available inventories using satellite NO2 retrievals for Turkey. NOx emissions from two available inventories (EMEP and TNO) were compared with each other, differences and similarities were determined. NOx emission inventories were also compared with OMI NO2 satellite retrievals. Correlation coefficients (R2) between parameters and emissions were found in the range of 0.29-0.69 for selected high populated cities. OMI NO2 satellite retrievals overpass NO2 ground observation stations were also processed and the correlation between these observations for selected cities were found highest in summer and lowest in fall and winter. According to the comparison for individual cities, good correlations were observed for Ankara (R2 = 0.62), Izmir (R2 = 0.59) and Istanbul (R2 = 0.90). Weekly profiles and weekend/weekday ratios for ground-based and OMI NO2 observations were calculated and weekly profiles used for EMEP were also compared with observed weekly profiles. Findings showed that OMI is able to detect polluted regions in Turkey, but there are discrepancies between OMI and ground-based NO2 observations. Results also indicated issues on NOx emissions of large scale power plants in EMEP emission inventory for Turkey.",

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