Dr. Alexandra Tsimpidi

Curriculum vitae

PERSONAL INFORMATION

Family name: Tsimpidi First name: Alexandra

Research ID: P- 1341-2018 ORCID: 0000-0001-8773-4987

Date of birth: 23.10.1981 Nationality: Greek

EDUCATION

2009 Ph.D.: Dept. of Chemical Engineering, University of Patras, GR

-Dissertation: Simulating the Atmospheric Primary and Secondary Organic Aerosols

2009 M. Sc.: Dept. of Chemical Engineering, University of Patras,GR

-Minor: Energy and Environment

2004 Dipl. Ing.: Dept. of Chemical Engineering, University of Patras, GR

-Minor: Process Simulation, Optimization and Control

PROFESSIONAL EXPERIENCE

2019 - Present Senior Scientist: Institute of Climate and Energy Systems: Troposphere (ICE-3), Forschungszentrum Jülich, DE

- Head of the group “Atmospheric Aerosol Modeling”

2012 - 2019 Research Assistant: Max Planck Institute for Chemistry, Mainz, DE

2018 - 2021 Research Affiliate: Institute for Environmental Research and Sustainable Development,

National Observatory of Athens, GR

2010 - 2012 Post-Doctoral Researcher: Dept. of Civil and Environmental Engineering,

Georgia Institute of Technology, Atlanta, USA

2006 Visiting Researcher: Molina Center for Energy & the Environment, San Diego, USA

2004 - 2009 Graduate Researcher: Dept. of Chemical Engineering, University of Patras, GR

FELLOWSHIPS/AWARDS/PRIZES

2018 - 2021 Individual grant (#1518), Hellenic Foundation for Research and Innovation (HFRI)

2015 - 2018 Individual grant (#TS 335/2-1), Deutsche Forschungsgemeinschaft (DFG)

2012 - 2015 Fellowship, Max Planck Society

2006 - 2009 Fellowship, Molina Center for Energy and the Environment

2004 - 2005 Fellowship, Carnegie Mellon University

2004 Scholar Award for graduating among the top three ranking students of my class,

Technical Chamber of Greece

2003 Scholar Award for outstanding student performance, National Scholarships Foundation

SUPERVISION OF GRADUATE STUDENTS

2021- Present Supervise 2 PhD students (Mr. A. Koumparos, Mrs. S. Scholz)

Supervise 2 Master Students (Mrs. S. Scholz, Mr J.P. Kraayvanger)

Co-advise 3 PhD students (Mr. A. Milousis, Mrs. X. Wang, Mrs. X. Li)

2016 -2017 Co-advise 1 PhD student (Mrs. S.Bacer) in Max Planck Inst. for Chem., Mainz, DE

2010 - 2013 Co-advise 3 PhD students (Dr. M. Trail, Dr. P. Liu and Dr. W. Zhang) in

Georgia Inst. of Technology, Atlanta, USA

TEACHING ACTIVITIES

2022 - Present Compact Course in Tropospheric Aerosols, Forschungszentrum Jülich, DE

2022 - Present Atmospheric Chemistry, Inst. of Geophysics and Meteorology, Cologne University,DE

2005 Graduate Teaching Assistant – Unit Operations, University of Patras, GR

2005 Graduate Teaching Assistant – Numerical Analysis, University of Patras, GR

2004 Graduate Teaching Assistant – Unit Operations, University of Patras, GR

INTERNATIONAL RESPONSIBILITIES

2021 Contributing author on Chapter 6: Short-lived Climate Forcers of the IPCC Sixth Assessment Report:

Szopa, S., V. Naik, B. Adhikary, P. Artaxo, T. Berntsen, W.D. Collins, S. Fuzzi, L. Gallardo, A. Kiendler-Scharr, Z. Klimont, H. Liao, N. Unger, and P. Zanis, 2021: Short-Lived Climate Forcers. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 817–922, doi: 10.1017/9781009157896.008.

2021 Expert Reviewer of the IPCC Sixth Assessment Report:

IPCC, 2021: Annex X: Expert Reviewers of the IPCC Working Group I Sixth Assessment Report. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 2287–2338.

COMMISSIONS OF TRUST

2011-Present Reviewer for international journals (Environmental science and technology, Atmospheric chemistry and physics, Geoscientific model development, Atmospheric environment, Journal of advances in modelling earth system, Atmosphere, Chemosphere)

MEMBERSHIPS OF SCIENTIFIC SOCIETIES

2005 - Present Member of the American Association for Aerosol Research (AAAR)

2006 - Present Founding Member of the Hellenic Association for Aerosol Research (HAAR)

2006 - Present Member of the American Geophysical Union (AGU)

2008 - Present Member of the European Geosciences Union (EGU)

2009 - Present Member of the Technical Chamber of Engineers (Greece)

2012 - Present Member of the Max Planck society

CAREER BREAKS

2012 Birth of my 1^st child

2014 Birth of my 2^nd child

2018 Birth of my 3^rd child

INVITED PRESENTATIONS

2007 Invited seminar in the Dept. of Chemical Engineering, Carnegie Mellon University, Pittsburg, USA

2007 Invited seminar in the Molina Center for Strategic Studies in Energy & the Environment, La Jolla, USA

2014 Invited conference presentation in the session for the Aerosol fractions, climate forcing, and air pollution during the 7^th Non-CO₂ Greenhouse Gases conference in Amsterdam, The Netherlands

2018 Invited seminar in the Energy, Environment and Water research center of the Cyprus Institute, Nicosia Cyprus

2018 Invited seminar in the Institute of Energy and Climate Research: Troposphere of the Forschungszentrum Jülich, DE

2019 Invited seminar in the Inst. of Geophysics and Meteorology, Cologne University, DE

1. Vella, R., Forrest, M., Pozzer, A., Tsimpidi, A. P., Hickler, T., Lelieveld, J., and Tost, H.: Influence of land cover change on atmospheric organic gases, aerosols, and radiative effects, Atmos. Chem. Phys., 25, 243–262, https://doi.org/10.5194/acp-25-243-2025, 2025.

2. Milousis, A., Klingmüller, K., Tsimpidi, A. P., Kok, J. F., Kanakidou, M., Nenes, A., and Karydis, V. A.: Impact of mineral dust on the global nitrate aerosol direct and indirect radiative effect, EGUsphere, 2024, 1-31, 10.5194/egusphere-2024-1579, 2024a.

3. Milousis, A., Tsimpidi, A. P., Tost, H., Pandis, S. N., Nenes, A., Kiendler-Scharr, A., and Karydis, V. A.: Implementation of the ISORROPIA-lite aerosol thermodynamics model into the EMAC chemistry climate model (based on MESSy v2.55): implications for aerosol composition and acidity, Geosci. Model Dev., 17, 1111-1131, 10.5194/gmd-17-1111-2024, 2024b.

4. Pozzer, A., Reifenberg, S. F., Kumar, V., Franco, B., Kohl, M., Taraborrelli, D., Gromov, S., Ehrhart, S., Jöckel, P., Sander, R., Fall, V., Rosanka, S., Karydis, V., Akritidis, D., Emmerichs, T., Crippa, M., Guizzardi, D., Kaiser, J. W., Clarisse, L., Kiendler-Scharr, A., Tost, H., and Tsimpidi, A.: Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel, Geosci. Model Dev., 15, 2673-2710, 10.5194/gmd-15-2673-2022, 2022.

5. Szopa, S., V. Naik, B. Adhikary, P. Artaxo, T. Berntsen, W.D. Collins, S. Fuzzi, L. Gallardo, A. Kiendler-Scharr, Z. Klimont, H. Liao, N. Unger, P. Zanis, and co. authors: Wenche A, D. Akritidis, R. J. Allen, N. Bellouin, S. Berger, S. M. Blichner, J. G. Canadell, W. Collins, O. R. Cooper, F. J. Dentener, S. Doherty, J.L. Dufresne , S. H. Faria, P. Forster, T.M. Fu, J. S. Fuglestvedt, J. C. Fyfe, A. K. Georgoulias , M. J. Gidden, N. P. Gillett, P. Ginoux , P. T. Griffiths, J. He, C. Jones, S. Krakovska, Chaincy Kuo, D. S. Lee, M.Levasseur, M. Lizotte (Canada), T. K. Maycock, J. F. Müller, H. Muri, Lee T. Murray, Z.R. J. Nicholls, J. Ovadnevaite, P. K. Patra, F. Paulot, P. Purohit, J. Quaas, J. Rogelj, B. H. Samset , C. Smith, I. Takayabu, M. Tronstad Lund, A P. Tsimpidi, S. Turnock, R.V. Dingenen , H. Zhang, A. Zhao: Short-Lived Climate Forcers. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, doi: 10.1017/9781009157896.008, 2021.

6. Karydis, V. A., Tsimpidi, A. P., Pozzer, A., and Lelieveld, J.: How alkaline compounds control atmospheric aerosol particle acidity, Atmospheric Chemistry and Physics, 21, 14983-15001, 10.5194/acp-21-14983-2021, 2021.

7. Maclean, A. M., Li, Y., Crescenzo, G. V., Smith, N. R., Karydis, V. A., Tsimpidi, A. P., Butenhoff, C. L., Faiola, C. L., Lelieveld, J., Nizkorodov, S. A., Shiraiwa, M., and Bertram, A. K.: Global Distribution of the Phase State and Mixing Times within Secondary Organic Aerosol Particles in the Troposphere Based on Room-Temperature Viscosity Measurements, Acs Earth and Space Chemistry, 5, 3458-3473, 10.1021/acsearthspacechem.1c00296, 2021.

8. Eyoy, E., Maclean, A. M., Royelli, G., Li, Y., Tsimpidi, A. P., Karydis, V. A., Kamal, S., Lelieveld, J., Shiraiwa, M., Reid, J. P., and Bertram, A. K.: Predictions of diffusion rates of large organic molecules in secondary organic aerosols using the Stokes-Einstein and fractional Stokes-Einstein relations, Atmospheric Chemistry and Physics, 19, 10073-10085, 10.5194/acp-19-10073-2019, 2019.

9. Fanourgakis, G. S., Kanakidou, M., Nenes, A., Bauer, S. E., Bergman, T., Carslaw, K. S., Grini, A., Hamilton, D. S., Johnson, J. S., Karydis, V. A., Kirkevag, A., Kodros, J. K., Lohmann, U., Luo, G., Makkonen, R., Matsui, H., Neubauer, D., Pierce, J. R., Schmale, J., Stier, P., Tsigaridis, K., van Noije, T., Wang, H. L., Watson-Parris, D., Westervelt, D. M., Yang, Y., Yoshioka, M., Daskalakis, N., Decesari, S., Gysel-Beer, M., Kalivitis, N., Liu, X. H., Mahowald, N. M., Myriokefalitakis, S., Schrodner, R., Sfakianaki, M., Tsimpidi, A. P., Wu, M. X., and Yu, F. Q.: Evaluation of global simulations of aerosol particle and cloud condensation nuclei number, with implications for cloud droplet formation, Atmos. Chem. Phys, 19, 8591-8617, 10.5194/acp-19-8591-2019, 2019.

10. Tsimpidi, A. P., Karydis, V. A., Pozzer, A., Pandis, S. N., and Lelieveld, J.: ORACLE 2-D (v2.0): an efficient module to compute the volatility and oxygen content of organic aerosol with a global chemistry-climate model, Geosci. Model Dev., 11, 3369-3389, 10.5194/gmd-11-3369-2018, 2018.

11. Bacer, S., Sullivan, S. C., Karydis, V. A., Barahona, D., Kramer, M., Nenes, A., Tost, H., Tsimpidi, A. P., Lelieveld, J., and Pozzer, A.: Implementation of a comprehensive ice crystal formation parameterization for cirrus and mixed-phase clouds in the EMAC model (based on MESSy 2.53), Geosci. Model Dev., 11, 4021-4041, 10.5194/gmd-11-4021-2018, 2018.

12. Shiraiwa, M., Li, Y., Tsimpidi, A. P., Karydis, V. A., Berkemeier, T., Pandis, S. N., Lelieveld, J., Koop, T., and Poschl, U.: Global distribution of particle phase state in atmospheric secondary organic aerosols, Nature comm., 8, 10.1038/ncomms15002, 2017.

13. Pozzer, A., Tsimpidi, A. P., Karydis, V. A., de Meij, A., and Lelieveld, J.: Impact of agricultural emission reductions on fine-particulate matter and public health, Atmos. Chem. Phys, 17, 12813-12826, 10.5194/acp-17-12813-2017, 2017.

14. Tsimpidi, A. P., Karydis, V. A., Pandis, S. N., and Lelieveld, J.: Global-scale combustion sources of organic aerosols: sensitivity to formation and removal mechanisms, Atmos. Chem. Phys, 17, 7345-7364, 10.5194/acp-17-7345-2017, 2017.

15. Karydis, V. A., Tsimpidi, A. P., Bacer, S., Pozzer, A., Nenes, A., and Lelieveld, J.: Global impact of mineral dust on cloud droplet number concentration, Atmos. Chem. Phys, 17, 5601-5621, 10.5194/acp-17-5601-2017, 2017.

16. Bian, H. S., Chin, M., Hauglustaine, D. A., Schulz, M., Myhre, G., Bauer, S. E., Lund, M. T., Karydis, V. A., Kucsera, T. L., Pan, X. H., Pozzer, A., Skeie, R. B., Steenrod, S. D., Sudo, K., Tsigaridis, K., Tsimpidi, A. P., and Tsyro, S. G.: Investigation of global particulate nitrate from the AeroCom phase III experiment, Atmos. Chem. Phys, 17, 12911-12940, 10.5194/acp-17-12911-2017, 2017.

17. Janssen, R. H. H., Tsimpidi, A. P., Karydis, V. A., Pozzer, A., Lelieveld, J., Crippa, M., Prévôt, A. S. H., Ait-Helal, W., Borbon, A., Sauvage, S., and Locoge, N.: Influence of local production and vertical transport on the organic aerosol budget over Paris, Journal of Geophysical Research: Atmospheres, 122, 8276-8296, https://doi.org/10.1002/2016JD026402, 2017.

18. Tsimpidi, A.P., Karydis, V.A., Pandis, S.N., and Lelieveld, J.: Global combustion sources of organic aerosols: model comparison with 84 AMS factor-analysis data sets, Atmos. Chem. Phys., 16, 8939-8962, 2016.

19. Karydis, V.A., Tsimpidi, A.P., Pozzer, A., Astitha, M., and Lelieveld, J.: Effects of mineral dust on global atmospheric nitrate concentrations, Atmos. Chem. Phys., 16, 1491-1509, 2016.

20. Trail, M., Tsimpidi, A.P., Liu, P., Tsigaridis, K., Hu, Y., Nenes, A., Stone, B., and Russell, A. G.: Reforestation and crop land conversion impacts on future regional air quality in the Southeastern US, Agricultural and Forest Meteorology, 209, 78-86, 2015.

21. Trail, M. A., Tsimpidi, A.P., Liu, P., Tsigaridis, K., Hu, Y. T., Rudokas, J. R., Miller, P. J., Nenes, A., and Russell, A. G.: Impacts of Potential CO2-Reduction Policies on Air Quality in the United States, Environmental Science & Technology, 49, 5133-5141, 2015.

22. Tsimpidi, A.P.; Karydis, V.A.; Pozzer, A.; Pandis, S.N.; Lelieveld, J.: ORACLE (v1.0): module to simulate organic aerosol composition and evolution in the atmosphere; Geos. Mod. Develop., 7, 3153-3172, 2014

23. Trail, M.; Tsimpidi, A.P.; Liu, P.; Tsigaridis, K.; Hu, Y.; Rodukus, J.; Nenes, A.; Stone, B.; Russell, A.G.: Sensitivity of air quality to potential future climate change and emissions in the United States and major cities, Atmos. Env., 94, 552-563, 2014

24. Trail, M.; Tsimpidi, A.P.; Liu, P.; Tsigaridis, K., Hu, Y.; Nenes, A.; Stone, B.; Russell, A.G.: Potential impact of land use change on future regional climate in the Southeastern US: Reforestation and crop land conversion., J. Geophys. Res-Atmo., 118, 10.1002/2013JD020356, 2013.

25. Trail, M.; Tsimpidi, A.P.; Liu, P.; K. Tsigaridis, Hu Y.; Nenes, A.; Russell, A.G.: Downscaling a global climate model to simulate climate change impacts on US regional and urban air quality; Geosci. Model Dev., 6, 1429-1445, 2013.

26. Athanasopoulou, E.; Vogel, H.; Bangert, M.; Knote, C.; Vogel, B.; Murphy, B.; Tsimpidi, A.P.; Pandis, S.N.: Organic aerosol predictions over Europe using the volatility basis set approach: model performance, sensitivity analysis and direct radiative forcing; Atmos. Chem. Phys., 13, 625-645, 2013.

27. Tsimpidi, A.P.; Trail M.; Hu Y.; Nenes, A.; Russell, A.G.: Modeling an air pollution episode in northwestern United States: Identifying the impact of nitrogen oxide and volatile organic compound sources on air pollutants formation using direct sensitivity analysis, J. Air Waste Manage. Assoc., 62, 1150-1165, 2012

28. Liu, P., Tsimpidi A.P.; Hu Y.; Russell, A.G.; Nenes, A.: Differences between Downscaling with Spectral and Grid Nudging Using WRF, Atmos. Chem. Phys., 12, 3601-3610, 2012.

29. Karydis, V.A.; Tsimpidi, A.P.; W. Lei, L. T. Molina; Pandis, S.N.: Formation of the semivolatile inorganic aerosol components in Mexico City Metropolitan Area during the MILAGRO campaign; ; Atmos. Chem. Phys., 11, 13305-13323, 2011

30. Tsimpidi, A.P.; Karydis, V.A.; Zavala, M.; Lei, W.; Molina, L.T.; Pandis, S.N.: Sources and Production of Organic Aerosol in Mexico City: Insights from the Combination of a Chemical Transport Model (PMCAMx-2008) and Measurements during MILAGRO; Atmos. Chem. Physics, 11, 5153-5168,2011

31. Li, G.; Zavala, M.; Lei, W.; Tsimpidi, A.P.; Karydis, V.A.; Pandis, S.N.; Canagaratna, M.R.; Molina, L.T.: Simulations of Organic Aerosols in Mexico City Using the WRF-CHEM Model during the MCMA-2006/Milagro Campaign; Atmos. Chem. Phys, 11, 3789-3809, 2011

32. Tsimpidi, A.P.; Karydis, V.A.; Zavala, M.; Lei, W.; Molina, L.T.; Ulbrich, I.M.; Jimenez, J.L.; Pandis, S.N.: Evaluation of the Volatility Basis-Set Approach for the Simulation of Organic Aerosol Formation in the Mexico City Metropolitan Area; Atmos. Chem. Phys, 10, 525-546, 2010.

33. Karydis, V.A.; Tsimpidi, A.P.; Fountoukis, C.; Nenes, A.; Zavala, M.; Lei, W.; Molina, L.T.; Pandis, S.N.: Simulating the fine and coarse inorganic particulate matter concentrations in a polluted megacity; Atmos. Environ., 44, 608-620, 2010.

34. Tsimpidi, A.P.; Karydis, V.A.; Pandis, S.N.: Response of fine particulate matter to emission changes of oxides of nitrogen and anthropogenic volatile organic compounds in the eastern United States; J. Air Waste Manage. Assoc., 58, 1463-1473, 2008.

35. Tsimpidi, A.P.; Karydis, V.A.; Pandis, S.N.: Response of inorganic fine particulate matters to emission changes of SO₂ and NH₃: The eastern United States as a case study; J. Air Waste Manage. Assoc., 57, 1489-1498, 2007.

36. Karydis, V.A.; Tsimpidi, A.P.; Pandis, S.N.: Evaluation of a three-dimensional chemical transport model (PMCAMx) in the Eastern United States for all four seasons; J. Geophys. Res., 112, D14211, 2007.