Study of a winter PM episode in Istanbul using the high resolution WRF/CMAQ modeling system

Ulas Im*, Kostandinos Markakis, Alper Unal, Tayfun Kindap, Anastasia Poupkou, Selahattin Incecik, Orhan Yenigun, Dimitros Melas, Christina Theodosi, Nikos Mihalopoulos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

High winter-time PM10, sulfate, nitrate and ammonium levels in Istanbul were investigated using a high resolution WRF/CMAQ mesoscale model system. A model-ready anthropogenic emission inventory on 2 km spatial resolution was developed for the area and the present study is the first attempt to test these emissions. The results suggested that the system was capable of producing the magnitudes. PM10 levels calculated by the model underestimated the observations with an average of 10 per cent at Bogazici University sampling station, whereas an overestimation of 12 per cent is calculated for all stations. High uncertainties, particularly in traffic and coal combustion, led to over estimations around emission hot spots. Base case results together with the sensitivity studies pointed significant contribution of local sources, pointing to the need of control strategies focusing on primary particulate emissions.

Original languageEnglish
Pages (from-to)3085-3094
Number of pages10
JournalAtmospheric Environment
Volume44
Issue number26
DOIs
Publication statusPublished - Aug 2010

Funding

The authors would like to acknowledge the financial support by the Scientific and Technological Research Council of Turkey (TUBITAK, COST project no: 105Y005), Bogazici University Research Fund projects 07YD and 05Y105, and the EU funded CITYZEN project for making the aerosol samplings and the analysis possible.

FundersFunder number
Bogazici University07YD, 05Y105
TUBITAK
European Commission
European Cooperation in Science and Technology105Y005
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

    Keywords

    • Aerosol
    • Air quality modeling
    • Chemical composition
    • CMAQ
    • Istanbul
    • WRF

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