eprintid: 14552 rev_number: 18 eprint_status: archive userid: 5 dir: disk0/00/01/45/52 datestamp: 2017-05-02 07:36:45 lastmod: 2021-08-27 17:28:52 status_changed: 2017-05-02 07:36:45 type: article metadata_visibility: show creators_name: Amann, M. creators_name: Purohit, P. creators_name: Bhanarkar, A.D. creators_name: Bertok, I. creators_name: Borken-Kleefeld, J. creators_name: Cofala, J. creators_name: Heyes, C. creators_name: Kiesewetter, G. creators_name: Klimont, Z. creators_name: Liu, J. creators_name: Majumdar, D. creators_name: Nguyen, B. creators_name: Rafaj, P. creators_name: Rao, P.S. creators_name: Sander, R. creators_name: Schöpp, W. creators_name: Srivastava, A. creators_name: Vardhan, B.H. creators_id: 1136 creators_id: 1873 creators_id: 1411 creators_id: 1888 creators_id: 1460 creators_id: 1540 creators_id: 8472 creators_id: 1473 creators_id: 8833 creators_id: 1878 creators_id: 1822 creators_id: 1813 creators_id: 1017 creators_orcid: 0000-0002-1963-0972 creators_orcid: 0000-0002-7265-6960 creators_orcid: 0000-0002-5465-8559 creators_orcid: 0000-0001-5254-493X creators_orcid: 0000-0002-9369-9812 creators_orcid: 0000-0003-2630-198X creators_orcid: 0000-0002-2260-8186 creators_orcid: 0000-0003-1000-5617 creators_orcid: 0000-0001-6507-0630 creators_orcid: 0000-0001-5990-423X title: Managing future air quality in megacities: A case study for Delhi ispublished: pub divisions: prog_air divisions: prog_mag keywords: Air pollution; PM2.5; Population exposure; Policy analysis; Health impacts; Co-benefits abstract: Megacities in Asia rank high in air pollution at the global scale. In many cities, ambient concentrations of fine particulate matter (PM2.5) have been exceeding both the WHO interim targets as well as respective national air quality standards. This paper presents a systems analytical perspective on management options that could efficiently improve air quality at the urban scale, having Delhi as a case study. We employ the newly developed GAINS-City policy analysis framework, consisting of a bottom up emission calculation combined with atmospheric chemistry-transport calculation, to derive innovative insights into the current sources of pollution and their impacts on ambient PM2.5, both from emissions of primary PM as well as precursors of secondary inorganic and organic aerosols. We outline the likely future development of these sources, quantify the related ambient PM2.5 concentrations and health impacts, and explore potential policy interventions that could effectively reduce environmental pollution and resulting health impacts in the coming years. The analysis demonstrates that effective improvement of Delhi's air quality requires collaboration with neighboring States and must involve sources that are less relevant in industrialized countries. At the same time, many of the policy interventions will have multiple co-benefits on development targets in Delhi and its neighboring States. Outcomes of this study, as well as the modelling tools used herein, are applicable to other urban areas and fast growing metropolitan zones in the emerging Asian regions. date: 2017-07 date_type: published publisher: Elsevier id_number: 10.1016/j.atmosenv.2017.04.041 creators_browse_id: 15 creators_browse_id: 239 creators_browse_id: 32 creators_browse_id: 36 creators_browse_id: 55 creators_browse_id: 123 creators_browse_id: 154 creators_browse_id: 159 creators_browse_id: 185 creators_browse_id: 216 creators_browse_id: 241 creators_browse_id: 264 creators_browse_id: 273 full_text_status: public publication: Atmospheric Environment volume: 161 pagerange: 99-111 refereed: TRUE issn: 13522310 coversheets_dirty: FALSE fp7_project: no fp7_type: info:eu-repo/semantics/article citation: Amann, M. ORCID: https://orcid.org/0000-0002-1963-0972 , Purohit, P. ORCID: https://orcid.org/0000-0002-7265-6960 , Bhanarkar, A.D., Bertok, I. , Borken-Kleefeld, J. ORCID: https://orcid.org/0000-0002-5465-8559 , Cofala, J. , Heyes, C. ORCID: https://orcid.org/0000-0001-5254-493X , Kiesewetter, G. ORCID: https://orcid.org/0000-0002-9369-9812 , et al. (2017). Managing future air quality in megacities: A case study for Delhi. Atmospheric Environment 161 99-111. 10.1016/j.atmosenv.2017.04.041 . document_url: https://pure.iiasa.ac.at/id/eprint/14552/1/S1352231017302856