Gregor Kiesewetter

Gregor Kiesewetter is an atmospheric physicist. He joined the Mitigation of Air pollution
& Greenhouse gases (MAG) Program in November 2011 to work on the improvement of the GAINS model. In particular, Dr. Kiesewetter’s topics include the introduction of a downscaling methodology linking the different spatial scales of air pollution impacts in GAINS (regional to street-level), as well as further advancing the treatment of radiative forcing in GAINS.

Dr. Kiesewetter graduated from the University of Vienna with a degree in physics in 2006, and earned his PhD in environmental physics from the University of Bremen, Germany, in 2011. During his PhD studies, he worked in the field of atmospheric chemistry transport modeling and satellite data assimilation, identifying anthropogenic and natural contributions to changes in the ozone layer.

Before joining IIASA as a research scholar, Dr. Kiesewetter participated in the 2009 Young Scientists Summer Program (YSSP) working on long-range transport of European air pollution to the Arctic and connections to hemispheric modes of climate variability. For his study, he was awarded IIASA’s Peccei fellowship in 2010, and returned to IIASA in summer 2011.


Last update: 07-DEC-2011

Dimitrova, A.K., Marois, G., Kiesewetter, G., K.C., S., Rafaj, P. , & Tonne, C. (2021). Health impacts of fine particles under climate change mitigation, air quality control, and demographic change in India. Environmental Research Letters 10.1088/1748-9326/abe5d5. (In Press)

Hamilton, I., Kennard, H., McGushin, A., Höglund Isaksson, L. , Kiesewetter, G., Lott, M., Milner, J., Purohit, P. , et al. (2021). The public health implications of the Paris Agreement: a modelling study. The Lancet Planetary Health 5 (2), e74-e83. 10.1016/S2542-5196(20)30249-7.

Rafaj, P. , Kiesewetter, G., Krey, V. , Schöpp, W., Bertram, C., Drouet, L., Fricko, O. , Shinichiro, F., et al. (2021). Air quality and health implications of 1.5–2°C climate pathways under considerations of ageing population: A multi-model scenario analysis. Environmental Research Letters 10.1088/1748-9326/abdf0b. (In Press)

Cai, W., Zhang, C., Suen, H.P., Ai, S., Bai, Y., Bao, J., Chen, B., Cheng, L., et al. (2021). The 2020 China report of the Lancet Countdown on health and climate change. The Lancet Public Health 6 (1), 64-81. 10.1016/S2468-2667(20)30256-5.

Watts, N., Amann, M., Arnell, N., Ayeb-Karlsson, S., Beagley, J., Belesova, K., Boykoff, M., Byass, P., et al. (2020). The 2020 report of The Lancet Countdown on health and climate change: responding to converging crises. The Lancet 10.1016/S0140-6736(20)32290-X.

Amann, M., Kiesewetter, G., Schöpp, W., Klimont, Z. , Winiwarter, W. , Cofala, J., Rafaj, P. , Höglund-Isaksson, L. , et al. (2020). Reducing global air pollution: the scope for further policy interventions. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378 (2183), e20190331. 10.1098/rsta.2019.0331.

Niamir, L., Kiesewetter, G., Wagner, F. , Schöpp, W., Filatova, T., Voinov, A., & Bressers, H. (2020). Assessing the macroeconomic impacts of individual behavioral changes on carbon emissions. Climatic Change 158, 141-160. 10.1007/s10584-019-02566-8.

Purohit, P. , Amann, M., Kiesewetter, G., Rafaj, P. , Chaturvedi, V., Dholakia, H.H., Koti, P.N., Klimont, Z. , et al. (2019). Mitigation pathways towards national ambient air quality standards in India. Environment International 133, e105147. 10.1016/j.envint.2019.105147.

Watts, N., Amann, M., Arnell, N., Ayeb-Karlsson, S., Belesova, K., Boykoff, M., Byass, P., Cai, W., et al. (2019). The 2019 report of The Lancet Countdown on health and climate change: ensuring that the health of a child born today is not defined by a changing climate. The Lancet 394 (10211), 1836-1878. 10.1016/S0140-6736(19)32596-6.

Li, N., Chen, W., Rafaj, P. , Kiesewetter, G., Schöpp, W., Wang, H., Zhang, H., Krey, V. , et al. (2019). Air Quality Improvement Co-benefits of Low-Carbon Pathways toward Well Below the 2 °C Climate Target in China. Environmental Science & Technology 53 (10), 5576-5584. 10.1021/acs.est.8b06948.

Purohit, P. , Amann, M., Kiesewetter, G., Rafaj, P. , Chaturvedi, V., Dholakia, H., Nagarkoti, P., Klimont, Z. , et al. (2019). Pathways towards clean air in India. In: European Geosciences Union (EGU) General Assembly 2019, 7–12 April 2019, Vienna, Austria.

Liu, J., Kiesewetter, G., Klimont, Z. , Cofala, J., Heyes, C., Schöpp, W., Zhu, T., Cao, G., et al. (2019). Mitigation pathways of air pollution from residential emissions in the Beijing-Tianjin-Hebei region in China. Environment International 125, 236-244. 10.1016/j.envint.2018.09.059.

Åström, S., Kiesewetter, G., Schöpp, W., Sander, R., & Andersson, S. (2019). Investment perspectives on costs for air pollution control affect the optimal use of emission control measures. Clean Technologies and Environmental Policy 21 (3), 695-705. 10.1007/s10098-018-1658-4.

Purohit, P. , Amann, M., Kiesewetter, G., Chaturvedi, V., Rafaj, P. , Dholakia, H.H., Nagar Koti, P., Klimont, Z. , et al. (2019). Pathways to Achieve National Ambient Air Quality Standards (NAAQS) in India. International Institute for Applied Systems Analysis (IIASA) and Council on Energy, Environment and Water (CEEW)

Amann, M., Klimont, Z. , An Ha, T., Rafaj, P. , Kiesewetter, G., Gomez Sanabria, A. , Nguyen, B., Thi Thu, T.N., et al. (2019). Future air quality in Ha Noi and northern Vietnam. IIASA Research Report. Laxenburg, Austria: RR-19-003

Amann, M., Jiming, H., Borken-Kleefeld, J. , Cofala, J., Gomez Sanabria, A. , Heyes, C. , Höglund Isaksson, L. , Kiesewetter, G., et al. (2019). Scenarios and Solutions. In: Air Pollution in Asia and the Pacific: Science-based solutions. pp. 61-100 Bangkok, Thailand: United Nations Environment Programme (UNEP). ISBN 978-92-807-3725-7

Cofala, J., Amann, M., Borken-Kleefeld, J. , Gomez Sanabria, A. , Heyes, C. , Kiesewetter, G., Sander, R., Schöpp, W., et al. (2018). Final Report The potential for cost-effective air emission reductions from international shipping through designation of further Emission Control Areas in EU waters with focus on the Mediterranean Sea. IIASA Research Report. Laxenburg, Austria: RR-18-002

Watts, N., Amann, M., Arnell, N., Ayeb-Karlsson, S., Belesova, K., Berry, H., Bouley, T., Boykoff, M., et al. (2018). The 2018 report of the Lancet Countdown on health and climate change: shaping the health of nations for centuries to come. The Lancet 392 (10163), 2479-2514. 10.1016/S0140-6736(18)32594-7.

Rafaj, P. , Kiesewetter, G., Gül, T., Schöpp, W., Cofala, J., Klimont, Z. , Purohit, P. , Heyes, C. , et al. (2018). Outlook for clean air in the context of sustainable development goals. Global Environmental Change 53, 1-11. 10.1016/j.gloenvcha.2018.08.008.

Wagner, F. , Borken-Kleefeld, J. , Kiesewetter, G., Klimont, Z. , Nguyen, B., Rafaj, P. , & Schöpp, W. (2018). The GAINS PMEH-Methodology -Version 2.0. IIASA Working Paper. Laxenburg, Austria: WP-18-016

Bhanarkar, A.D., Purohit, P. , Rafaj, P. , Amann, M., Bertok, I., Cofala, J., Rao, P.S., Vardhan, B.H., et al. (2018). Managing future air quality in megacities: Co-benefit assessment for Delhi. Atmospheric Environment 186, 158-177. 10.1016/j.atmosenv.2018.05.026.

Amann, M., Anderl, M., Borken-Kleefeld, J. , Cofala, J., Heyes, C. , Höglund Isaksson, L. , Kiesewetter, G., Klimont, Z. , et al. (2018). Progress towards the achievement of the EU's air quality and emissions objectives. IIASA

Karambelas, A., Holloway, T., Kinney, P.L., Fiore, A.M., DeFries, R., Kiesewetter, G., & Heyes, C. (2018). Urban versus rural health impacts attributable to PM2.5 and O3 in northern India. Environmental Research Letters 13 (6), 064010. 10.1088/1748-9326/aac24d.

Grubler, A. , Wilson, C. , Bento, N., Boza-Kiss, B., Krey, V. , McCollum, D., Rao, N. , Riahi, K. , et al. (2018). A low energy demand scenario for meeting the 1.5 °C target and sustainable development goals without negative emission technologies. Nature Energy 3 (6), 517-525. 10.1038/s41560-018-0172-6.

Karambelas, A., Holloway, T., Kiesewetter, G., & Heyes, C. (2018). Constraining the uncertainty in emissions over India with a regional air quality model evaluation. Atmospheric Environment 174, 194-203. 10.1016/j.atmosenv.2017.11.052.

Watts, N., Amann, M., Ayeb-Karlsson, S., Belesova, K., Bouley, T., Boykoff, M., Byass, P., Cai, W., et al. (2018). The Lancet Countdown on health and climate change: from 25 years of inaction to a global transformation for public health. The Lancet 391 (10120), 581-630. 10.1016/S0140-6736(17)32464-9.

Matsumoto, N., Borken-Kleefeld, J. , Klimont, Z. , Kiesewetter, G., Rafaj, P. , Amann, M., & Zusman, E. (2018). Assessment of the Impacts of Regulations for In-use Heavy-duty Diesel Vehicles and the Timing of Policy Implementation Using the GAINS Model: Case of the Tokyo Metropolitan Region. In: Asian Co-benefits Partnership, Quantifying Co-benefits in Asia: Methods and Applications. pp. 33-50 Tokyo, Japan: Ministry of the Environment, Japan..

Zhao, Z.Q., Bai, Z., Winiwarter, W. , Kiesewetter, G., Heyes, C. , & Ma, L. (2017). Mitigating ammonia emission from agriculture reduces PM2.5 pollution in the Hai River Basin in China. Science of the Total Environment 609, 1152-1160. 10.1016/j.scitotenv.2017.07.240.

Amann, M., Purohit, P. , Bhanarkar, A.D., Bertok, I., Borken-Kleefeld, J. , Cofala, J., Heyes, C. , Kiesewetter, G., 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.

Kiesewetter, G., Purohit, P. , Schöpp, W., Liu, J., Amann, M., & Bhanarkar, A. (2017). Source attribution and mitigation strategies for air pollution in Delhi. In: European Geosciences Union (EGU) General Assembly 2017, 23–28 April 2017, Vienna, Austria.

K.C., S., Kiesewetter, G., Pachauri, S. , Rao, N. , & Valin, H. (2017). SCHEMA, a crosscutting project: Accounting for Socioeconomic Heterogeneity in IIASA Models. In: IIASA Institutional Evaluation 2017, 27 February-1 March 2017, IIASA, Laxenburg, Austria.

Hendriks, C., Forsell, N., Kiesewetter, G., Schaap, M., & Schöpp, W. (2016). Ozone concentrations and damage for realistic future European climate and air quality scenarios. Atmospheric Environment 144, 208-219. 10.1016/j.atmosenv.2016.08.026.

Nguyen, T.B., Kiesewetter, G., & Schöpp, W. (2016). Semantic data integration from Multi Linked Model Framework. In: 8th International Congress on Environmental Modelling and Software, “Supporting Sustainable Futures.”, 10-14 July 2016, Tolouse, France.

Kiesewetter, G., Schöpp, W., & Amann, M. (2016). A Scalable Approach to Modelling Health Impacts of Air Pollution Based on Globally Available Data. In: 8th International Congress on Environmental Modelling and Software, “Supporting Sustainable Futures.”, 10-14 July 2016, Tolouse, France.

Klimont, Z. , Höglund-Isaksson, L. , Heyes, C. , Purohit, P. , Schöpp, W., Rafaj, P. , Kiesewetter, G., Borken, J. , et al. (2016). SLCP assessment for the Latin America and Caribbean. Final Report (Version 1.0). IIASA Report. International Institute for Applied Systems Analysis, Laxenburg, Austria.

OECD, IEA, IIASA (2016). Energy and Air Pollution: World Energy Outlook Special Report 2016. International Energy Agency,Paris, France

Kiesewetter, G., Schöpp, W., Heyes, C. , & Amann, M. (2015). Modelling PM2.5 impact indicators in Europe: Health effects and legal compliance. Environmental Modelling & Software 74, 201-211. 10.1016/j.envsoft.2015.02.022.

Cofala, J., Bertok, I., Borken-Kleefeld, J. , Heyes, C. , Kiesewetter, G., Klimont, Z. , Purohit, P. , Rafaj, P. , et al. (2015). Implications of energy trajectories from the World Energy Outlook for 2015 for India's air pollution. Final Report submitted to the International Energy Agency, Paris, France

Kiesewetter, G., Borken-Kleefeld, J. , Schöpp, W., Heyes, C. , Thunis, P., Bessagnet, B., Terrenoire, E., Fagerli, H., et al. (2015). Modelling street level PM10 concentrations across Europe: source apportionment and possible futures. Atmospheric Chemistry and Physics 15 (3), 1539-1553. 10.5194/acp-15-1539-2015.

Amann, M., Bertok, I., Borken-Kleefeld, J. , Cofala, J., Heyes, C. , Hoeglund-Isaksson, L. , Kiesewetter, G., Klimont, Z. , et al. (2015). Adjusted historic emission data, projections, and optimized emission reduction targets for 2030 - a comparison with COM data 2013. Part A:Results for EU-28. TSAP Report #16A, V1.1, DG-Environment of the European Commission, Belgium

Amann, M., Bertok, I., Borken-Kleefeld, J. , Cofala, J., Heyes, C. , Hoeglund-Isaksson, L. , Kiesewetter, G., Klimont, Z. , et al. (2015). Adjusted historic emission data, projections, and optimized emission reduction targets for 2030-a comparison with COM data 2013. Part B: Results for Member States. TSAP Report #16B, V1.1, DG-Environment of the European Commission, Belgium

Amann, M., Heyes, C. , Kiesewetter, G., Schoepp, W., & Wagner, F. (2014). Complimentary impact assessment on interactions between EU air quality policy and climate and energy policy. Ex-Ante Impact Assessment Unit, EPRS, European Parliament, Brusells, Belgium (2014)

Kiesewetter, G. & Amann, M. (2014). Urban PM2.5 levels under the EU Clean Air Policy Package. [[TSAP Report #12]], V1.0, DG-Environment of the European Commission, Belgium (October 2014)

Amann, M., Borken-Kleefeld, J. , Cofala, J. , Hoeglund-Isaksson, L. , Kiesewetter, G., Klimont, Z. , Rafaj, P. , Schoepp, W., et al. (2014). Updates to the GAINS model databases after the bilateral consultations with national experts in 2014. [[TSAP Report #14]] V1.0 (Editor: M. Amann), DG-Environment of the European Commission, Belgium (September 2014)

Amann, M., Borken-Kleefeld, J. , Cofala, J., Hettelingh, J.-P., Heyes, C. , Hoeglund-Isaksson, L. , Holland, M., Kiesewetter, G., et al. (2014). The final policy scenarios of the EU Clean Air Policy Package. XO-14-072

Kiesewetter, G., Borken-Kleefeld, J. , Schoepp, W., Heyes, C. , Thunis, P., Bessagnet, B., Terrenoire, E., Gsella, A., et al. (2014). Modelling NO2 concentrations at the street level in the GAINS integrated assessment model: Projections under current legislation. Atmospheric Chemistry and Physics 14 (2), 813-829. 10.5194/acp-14-813-2014.

Amann, M., Bertok, I., Borken-Kleefeld, J. , Cofala, J., Hetelingh, J.-P., Heyes, C. , Holland, M., Kiesewetter, G., et al. (2013). Policy Scenarios for the revision of the thematic strategy on air pollution. XO-13-057

Kiesewetter, G., Borken-Kleefeld, J. , Schoepp, W., Heyes, C. , Bertok, I., Thunis, P., Bessagnet, B., Terrenoire, E., et al. (2013). Modelling compliance with NO2 and PM10 air quality limit values in the GAINS model. TSAP Report #9, V1.0, DG-Environment of the European Commission, Belgium

Borken-Kleefeld, J. , Kiesewetter, G., Bertok, I., & Amann, M. (2012). The impact of future vehicles on pollutant emissions and air quality in Europe. [[ECO-MOBILITY 2012]], 11-12 December 2012, Vienna, Austria

Amann, M., Borken-Kleefeld, J. , Cofala, J., Heyes, C. , Kiesewetter, G., Klimont, Z. , Rafaj, P. , Sander, R., et al. (2012). TSAP-2012 Baseline: Health and environmental impacts. [[TSAP Report #6]], Version 1.0 (Editor: M. Amann), DG-Environment of the European Commission, Belgium (November 2012)

Amann, M., Borken-Kleefeld, J. , Kiesewetter, G., Rafaj, P. , & Wagner, F. (2012). Compliance with EU air quality limit values - A first set of sensitivity and optimization analyses. [[TSAP Report #8]], Version 1.0 (Editor: M. Amann), DG-Environment of the European Commission, Belgium (November 2012)

Borken-Kleefeld, J. , Kiesewetter, G., Papageorgiou, T., & Ntziachristos, L. (2012). Impact of NOx vehicle emission standards failure on Air Quality in Europe. In: 19th International Transport and Air Pollution Conference 2012 (TAP2012), 26-27 November 2012.

Kiesewetter, G. (2011). Assessing Transport of PM Pollution from Europe to the Arctic. IIASA Interim Report. IIASA, Laxenburg, Austria: IR-11-007