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Claudia Timmreck

Abteilung Klimaphysik
Gruppe Stratosphärischer Antrieb und Klima
Position Gruppenleiter*in
Telefon +49 40 41173-384
Email claudia.timmreck@mpimet.mpg.de
Raum B 407

Forschung

Mein wissenschaftlichen Interessen lassen sich im wesentlichen unter dem Stichwort "Klimaeinfluss von Vulkanen" zusammenfassen.  Seit meiner Promotion in den 90iger Jahren in der ich mit mit der Bildung und Entwicklung des stratosphaerischen Aerosols nach der Pinatuboeruption beschäftigt habe, haben mich die Auswirkungen großer Vulkaneruption auf die Atmosphäre und das Klima nicht mehr losgelassen. In den ersten Jahren lag mein Schwerpunkt auf der Modellierung von mikrophysikalischen Prozessen und dem Strahlungsantrieb später sind dann die Auswirkungen von großen Vulkaneruptionen auf  verschiedene Kompartments des Erdsystems dazu gekommen. Wichtig ist mir, die verschiedenen Wege von der vulkanischen Emission zum Strahlungsantrieb und vom Strahlungsantrieb zum Klimareponse zu verstehen um Auswirkungen zukünftiger Vulkanausbruch auf das tropische Hydroklima besser abschätzen zu können  Ferner interessiere ich mich dafür in wie weit  vergangene Klimaänderungen auf historische Vulkanausbrüche zurück zu führen sind

Weitere Informationen

Personal Information

Date and place of birth: April 15, 1965 in Herford (Germany)

 

Education

1991                    Diploma in Physics, University of Kiel

1997                    Ph.D. in Meteorology, University of Hamburg

2018                       Habilitation in Meteorology, University of Hamburg

                                                                                                                                             

Employment

Jun – Sep 1991     Research assistant in the research group for extraterrestrial Physics at the Institute of Theoretical and Applied Nuclear Physics (IFKKI), Christian Albrechts University, Kiel

1991 – 1997         PhD thesis at the Max-Planck-Institute for Meteorology, Hamburg

1997 – 2000         PostDoc at the Max-Planck-Institute for Meteorology, Hamburg

2000 – 2001         Research scientist at the Institute of Inorganic and Applied Chemistry, University Hamburg

Since    2001 –     Research scientist at the Max-Planck-Institute for Meteorology, Hamburg

2006 – 2011         Project leader of the integrated project “Supervolcano” at the Max-Planck-Institute for Meteorology, Hamburg

Since 2018           Group leader at the Max-Planck-Institute for Meteorology, Hamburg, working group Stratospheric forcing and climate

Veröffentlichungen

  • Meuer, J., Witte, M., Finn, T., Timmreck, C., Ludwig, T. & Kadow, C. (2026). Latent Diffusion and Spatiotemporal Transformers Generate Large Ensemble Climate Simulations. IEEE Transactions on Artificial Intelligence, 7(5), 2625-2637. doi:10.1109/TAI.2025.3621121 [publisher-version]
  • Andreasen, L., Shaw, T., Günther, M. & Timmreck, C. (2025). Independent Short- and Longwave Pathways for a Zonally Asymmetric Northern Hemisphere Temperature Response to Tropical Volcanic Eruptions. Geophysical Research Letters, 53(1). doi:10.1029/2025GL117680 [publisher-version][supplementary-material]
  • Dutta, D., Hopcroft, P., Andreasen, L., Aubry, T., Timmreck, C., Zanchettin, D., Zhang, X. & Muschitiello, F. (2025). State-dependent North Atlantic response to volcanic eruption clusters. Geophysical Research Letters, 52(15): e2025GL117582. doi:10.1029/2025GL117582 [publisher-version][supplementary-material]
  • Sospedra-Alfonso, R., Merryfield, W., Toohey, M., Timmreck, C., Vernier, J.-P., Bethke, I., Wang, Y., Bilbao, R., Donat, M., Ortega, P., Cole, J., Lee, W.-S., Delworth, T., Paynter, D., Zeng, F., Zhang, L., Khodri, M., Mignot, J., Swingedouw, D., Torres, O., Hu, S., Man, W., Zuo, M., Hermanson, L., Smith, D., Kataoka, T. & Tatebe, H. (2024). Decadal prediction centers prepare for a major volcanic eruption. Bulletin of the American Meteorological Society, 105(12), E2496 – E2524. doi:10.1175/BAMS-D-23-0111.1 [publisher-version]
  • Meuer, J., Timmreck, C., Fang, S.-W. & Kadow, C. (2024). Fingerprints of past volcanic eruptions can be detected in historical climate records using machine learning. Communications Earth & Environment, 5: 455. doi:10.1038/s43247-024-01617-y [publisher-version][supplementary-material]
  • Günther, M., Schmidt, H., Timmreck, C. & Toohey, M. (2024). Why does stratospheric aerosol forcing strongly cool the warm pool?. Atmospheric Chemistry and Physics Discussions, 24, 7203-7225. doi:10.5194/acp-24-7203-2024 [publisher-version]
  • Kroll, C., Fueglistaler, S., Schmidt, H., Kornblueh, L. & Timmreck, C. (2023). The sensitivity of moisture flux partitioning in the cold-point tropopause to external forcing. Geophysical Research Letters, 50: e2022GL102262. doi:10.1029/2022GL102262 [supplementary-material][publisher-version]
  • Kroll, C., Dacie, S., Azoulay, A., Schmidt, H. & Timmreck, C. (2021). The impact of volcanic eruptions of different magnitude on stratospheric water vapour in the tropics. Atmospheric Chemistry and Physics, 21, 6565-6591. doi:10.5194/acp-21-6565-2021 [supplementary-material][publisher-version]
  • Kroll, C., Fueglistaler, S., Schmidt, H., Dauhut, T. & Timmreck, C. (2024). The impact of stratospheric aerosol heating on the frozen hydrometeor transport pathways in the tropical tropopause layer. Environmental Research Letters, 19: 044039. doi:10.1088/1748-9326/ad33d0 [supplementary-material][publisher-version]
  • Fiedler, S., Crueger, T., D'Agostino, R., Peters, K., Becker, T., Leutwyler, D., Paccini, L., Burdanowitz, J., Buehler, S., Uribe, A., Dauhut, T., Dommenget, D., Fraedrich, K., Jungandreas, L., Maher, N., Naumann, A., Rugenstein, M., Sakradzija, M., Schmidt, H., Sielmann, F., Stephan, C., Timmreck, C., Zhu, X. & Stevens, B. (2020). Simulated tropical precipitation assessed across three major phases of the Coupled Model Intercomparison Project (CMIP). Monthly Weather Review, 148, 3653-3680. doi:10.1175/MWR-D-19-0404.1 [publisher-version][supplementary-material]
  • Quaglia, I., Timmreck, C., Niemeier, U., Visioni, D., Pitari, G., Brodowsky, C., Brühl, C., Dhomse, S., Franke, H., Laakso, A., Mann, G., Rozanov, E. & Sukhodolov, T. (2023). Interactive stratospheric aerosol models' response to different amounts and altitudes of SO2 injection during the 1991 Pinatubo eruption. Atmospheric Chemistry and Physics, 23, 921-948. doi:10.5194/acp-23-921-2023 [publisher-version][supplementary-material]
  • Günther, M., Schmidt, H., Timmreck, C. & Toohey, M. (2022). Climate feedback to stratospheric aerosol forcing: the key role of the pattern effect. Journal of Climate, 35, 4303-4317. doi:10.1175/JCLI-D-22-0306.1 [publisher-version]
  • Freychet, N., Schurer, A., Ballinger, A., Suarez-Gutierrez, L. & Timmreck, C. (2023). Assessing the impact of very large volcanic eruptions on the risk of extreme climate events. Environmental Research: Climate, 2: 035015 . doi:10.1088/2752-5295/acee9f [publisher-version]
  • Brodowsky, C., Sukhodolov, T., Chiodo, G., Aquila, V., Bekki, S., Dhomse, S., Höpfner, M., Laakso, A., Mann, G., Niemeier, U., Pitari, G., Quaglia, I., Rozanov, E., Schmidt, A., Sekiya, T., Tilmes, S., Timmreck, C., Vattioni, S., Visioni, D., Yu, P., Zhu, Y. & Peter, T. (2024). Analysis of the global atmospheric background sulfur budget in a multi-model framework. Atmospheric Chemistry and Physics Discussions, 24, 5513-5548. doi:10.5194/acp-24-5513-2024 [publisher-version]
  • Vernier, J.-P., Aubry, T., Timmreck, C., Schmidt, A., Clarisse, L., Prata, F., Theys, N., Prata, A., Mann, G., Choi, H., Carn, S., Rigby, R., Loughlin, S. & Stevenson, J. (2024). The 2019 Raikoke eruption as a testbed used by the Volcano Response group for rapid assessment of volcanic atmospheric impacts. Atmospheric Chemistry and Physics, 24, 5765-5782. doi:10.5194/egusphere-2023-1116 [publisher-version]
  • van Dijk, E., Jungclaus, J., Sigl, M., Timmreck, C. & Krüger, K. (2024). High-frequency climate forcing causes prolonged cold periods in the Holocene. Communications Earth & Environment, 5: 242. doi:10.1038/s43247-024-01380-0 [publisher-version]
  • Timmreck, C., Olonscheck, D., Ballinger, A., D’Agostino, R., Fang, S.-W., Schurer, A. & Hegerl, G. (2024). Linearity of the climate response to increasingly strong tropical volcanic eruptions in a large ensemble framework. Journal of Climate, 37, 2455-2470. doi:10.1175/JCLI-D-23-0408.1 [supplementary-material]
  • Andreasen, L., Cornér, J., Abbott, P., Sinclair, V., Riede, F. & Timmreck, C. (2024). Changes in Northern Hemisphere extra-tropical cyclone frequency following volcanic eruptions. Environmental research: climate, 3: 025002. doi:10.1088/2752-5295/ad2c0e [publisher-version]
  • Niemeier, U., Wallis, S., Timmreck, C., van Pham, T. & von Savigny, C. (2023). How the Hunga Tonga - Hunga Ha'apai water vapor cloud impacts its transport through the stratosphere: dynamical and radiative effects. Geophysical Research Letters, 50: e2023GL106482. doi:10.1029/2023GL106482 [publisher-version]
  • Villamayor, J., Khodri, M., Fang, S.-W., Jungclaus, J., Timmreck, C. & Zanchettin, D. (2023). Sahel droughts induced by large volcanic eruptions over the last millennium in PMIP4/Past1000 simulations. Geophysical Research Letters, 50: e2022GL101478. doi:10.1029/2022GL101478 [publisher-version]
  • Fang, S.-W., Sigl, M., Toohey, M., Jungclaus, J., Zanchettin, D. & Timmreck, C. (2023). The role of small to moderate volcanic eruptions in the early 19th century climate. Geophysical Research Letters, 50: e2023GL105307. doi:10.1029/2023GL105307 [publisher-version]
  • Giorgetta, M., Jungclaus, J., Reick, C., Legutke, S., Bader, J., Böttinger, M., Brovkin, V., Crueger, T., Esch, M., Fieg, K., Glushak, K., Gayler, V., Haak, H., Hollweg, H.-D., Ilyina, T., Kinne, S., Kornblueh, L., Matei, D., Mauritsen, T., Mikolajewicz, U., Mueller, W., Notz, D., Pithan, F., Raddatz, T., Rast, S., Redler, R., Roeckner, E., Schmidt, H., Schnur, R., Segschneider, J., Six, K., Stockhause, M., Timmreck, C., Wegner, J., Widmann, H., Wieners, K.-H., Claussen, M., Marotzke, J. & Stevens, B. (2013). Climate and carbon cycle changes from 1850 to 2100 in MPI-ESM simulations for the coupled model intercomparison project phase 5. Journal of Advances in Modeling Earth Systems, 5, 572-597. doi:10.1002/jame.20038 [publisher-version]
  • Jungclaus, J., Lorenz, S., Timmreck, C., Reick, C., Brovkin, V., Six, K., Segschneider, J., Giorgetta, M., Crowley, T., Pongratz, J., Krivova, N., Vieira, L., Solanki, S., Klocke, D., Botzet, M., Esch, M., Gayler, V., Haak, H., Raddatz, T., Roeckner, E., Schnur, R., Widmann, H., Claussen, M., Stevens, B. & Marotzke, J. (2010). Climate and carbon-cycle variability over the last millennium. Climate of the Past, 6, 723-737. doi:10.5194/cp-6-723-2010 [publisher-version]
  • Niemeier, U., Riede, F. & Timmreck, C. (2021). Simulation of ash clouds after a Laacher See-type eruption. Climate of the Past, 17, 633-652. doi:10.5194/cp-17-633-2021 [publisher-version][supplementary-material]
  • Schurer, A., Hegerl, G., Luterbacher, J., Brönnimann, S., Cowan, T., Tett, S., Zanchettin, D. & Timmreck, C. (2019). Disentangling the causes of the 1816 European year without a summer. Environmental Research Letters, 14: 094019. doi:10.1088/1748-9326/ab3a10 [publisher-version][supplementary-material]

  • Fang, S.-W., Pausata, F., D'Agostino, R., Khodri, M., Zanchettin, D. & Timmreck, C. (2025). Seasonal ITCZ control on ENSO responses to extratropical volcanic forcing. Journal of Climate, 38(21), 6061 -6079. doi:10.1175/JCLI-D-24-0554.1 [Preprint] [publisher-version][supplementary-material]
  • Timmreck, C., D'Agostino, R., Fang, S.-W., Ballinger, A., Hegerl, G., Kang, S. & Olonscheck, D. (2024). Relative role of land and ocean in shaping tropical hydroclimate after large volcanic eruptions. . EGU General Assembly 2024. Wien. 2024-04-14 - 2024-04-19 doi:10.5194/egusphere-egu24-6543 [abstract]
  • Timmreck, C. (2023). Abkühlung durch starke vulkanische Eruptionen und ihre Nebeneffekte. In Lozán, J., Grassl, H., Breckle, S.-W., Kasang, D. & Quante, M. (Eds.), Warnsignal Klima: Hilft Technik gegen die Erderwärmung? (pp.237-242). Hamburg: Wissenschaftliche Auswertungen. [publisher-version]
  • Lühr, B. & Timmreck, C. (2018). Vulkane und Klima. In Lozán, J., Breckle, S.-W., Grassl, H., Kasang, D. & Weisse, R. (Eds.), Warnsignal Klima: Extremereignisse - wissenschaftliche Fakten (pp.250-254). Hamburg: Wissenschaftliche Auswertungen. [publisher-version]
  • Timmreck, C. (2018). Climatic effects of large volcanic eruptions. Habilitation Thesis, Hamburg: Universität Hamburg. Berichte zur Erdsystemforschung, 204. doi:10.17617/2.2566000 [publisher-version]
  • Timmreck, C. (2011). Begrenzter Klimaeinfluss von extrem großen Vulkaneruptionen. Jahrbuch / Max-Planck-Gesellschaft, 2010. [publisher-version]
  • Baldwin, M., Dameris, D., Austin, J., Bekki, S., Bregman, B., Scinocca, J., Shindell, D., Struthers, H., Takahashi, M. & Thompson, D. (2006). Climate-Ozone Connections. In NOAA, UNEP, WMO (Eds.), Scientific Assessment of ozone depletion: 2006 Genf: World Meteorological Organization. [publisher-version]
  • Weisenstein, D., Bekki, S., Mills, M., Pitari, G. & Timmreck, C. (2006). Modeling of stratospheric aerosols. In Thomason, L. & Peter, T. (Eds.), Assessment of stratospheric aerosol properties (ASAP) (pp.219-272). Genf: SPARC Scientific Steering Group. [publisher-version]
  • Textor, C., Graf, H.-F., Timmreck, C. & Robock, A. (2004). Emissions from volcanoes. In Granier, C., Artaxo, P. & Reeves, C. (Eds.), Emissions of atmospheric trace compounds (pp.269-303). Dordrecht: Kluwer Academic Publ..
  • Hommel, R., Timmreck, C. & Granf, H. (2003). Global stratospheric sulfate aerosol modeling with ECHAM5 GCM. Journal of Aerosol Science, 34(Suppl. 2), S1147-S1148.
  • Timmreck, C., Graf, H. & Steil, B. (2003). Aerosol chemistry interactions after the Mt. Pinatubo eruption. In Robock, A. (Eds.), Volcanism and the earth's atmosphere (pp.213-225). Washington: American Geophysical Union.
  • Timmreck, C. & Schulz, M. (2003). Interannual variability of sea salt simulated with a general circulation model. Journal of Aerosol Science, 34(Suppl.), 543-544.
  • Timmreck, C. (2003). Simulation of UT/LS aerosol with a chemistry-microphysics-climate model. Journal of Aerosol Science, 34(Suppl. 2), 1053-1054. doi:10.1016/S0021-8502(03)00164-2 [publisher-version]
  • Timmreck, C. (1997). Simulationen zur Bildung und Entwicklung von stratosphärischem Aerosol unter besonderer Berücksichtigung der Pinatuboepisode. Phd Thesis, Hamburg: University of Hamburg. Examensarbeit / Max-Planck-Institut für Meteorologie, 46. [publisher-version]
  • Timmreck, C. (1991). Analyse eines Sensorkonzeptes -Monte-Carlo-Simulation für den Protonen- und Helium-Nachweis des Kieler EPHIN-Instruments an Bord von SOHO. Thesis, Kiel: Institut für Reine und Angewandte Kernphysik der Christian-Albrecht-Universität.