Office
Email: katja.lohmann[at]mpimet.mpg.de
Phone: +49-40-41173-116
Fax: +49-40-41173-298
Room no.: ZMAW 206
Mailing Address
Max Planck Institute for Meteorology
Bundesstr. 53
D-20146 Hamburg
Germany
Department
The Ocean in the Earth System
Research Group
Director's Research Group
Climate variability in the North Atlantic, with particular focus on the subpolar gyre and its exchanges with the Nordic Seas.
2005:
Lohmann, K. and M. Latif (2005): Tropical Pacific decadal variability and the subtropical-tropical cells. Journal of Climate, 18, 5163-5177
2007:
Lohmann, K. and M. Latif (2007): Influence of El Nino on the upper ocean circulation in the tropical Atlantic Ocean. Journal of Climate, 20, 5012-5018
2009:
Lohmann, K., H. Drange and M. Bentsen (2009a): Response of the North Atlantic subpolar gyre to persistent North Atlantic Oscillation like forcing. Climate Dynamics, 32, 273-285
Lohmann, K., H. Drange and M. Bentsen (2009b): A possible mechanism for the strong weakening of the North Atlantic subpolar gyre in the mid-1990s. Geophysical Research Letters, 36, L15602
2010:
Sando, A.B., J.E. Nilsen, Y.Q. Gao and K. Lohmann (2010): Importance of heat transport and local air-sea heat fluxes for Barents Sea climate variability. Journal of Geophysical Research, 115, C07013
2012:
Langehaug, H.R., P. Rhines, T. Eldevik, J. Mignot and K. Lohmann (2012): Simulated water mass transformation in the North Atlantic Current. Journal of Geophysical Research, 117, C11001
Menary, M., W. Park, K. Lohmann, M. Vellinga, M. Palmer, M. Latif and J.H. Jungclaus (2012): A multimodel comparison of centennial Atlantic meridional overturning circulation variability. Climate Dynamics, 38, 2377-2388
Nunez-Riboni, I., M. Bersch, H. Haak, J.H. Jungclaus and K. Lohmann (2012): A multi-decadal meridional displacement of the subpolar front in the Newfoundland Basin. Ocean Science, 8, 91-102
Robson, J., R. Sutton, K. Lohmann, D. Smith and M. Palmer (2012): Causes of the rapid warming of the North Atlantic Ocean in the mid-1990s. Journal of Climate, 25, 4116-4134
Zanchettin, D., C. Timmreck, H. Graf, A. Rubino, S. Lorenz, K. Lohmann, K. Krueger and J.H. Jungclaus (2012): Bi-decadal variability excited in the coupled ocean-atmosphere system by strong tropical volcanic eruptions. Climate Dynamics, 39, 419-444
2013:
Jungclaus, J.H., N. Fischer, H. Haak, K. Lohmann, J. Marotzke, D. Matei, U. Mikolajewicz, D. Notz and J.S. von Storch (2013): Characteristics of the ocean simulations in MPIOM, the ocean component of the MPI-Earth System Model. Journal of Advances in Modeling Earth Systems, 5, 422-446
2014:
Lohmann, K., J.H. Jungclaus, D. Matei, J. Mignot, M. Menary, H.R. Langehaug, J. Ba, Y.Q. Gao, O.H. Ottera, W. Park and S. Lorenz (2014): The role of subpolar deep water formation and Nordic Seas overflows in simulated multidecadal variability of the Atlantic meridional overturning circulation. Ocean Science, 10, 227-241
Ba, J., N. Keenlyside, M. Latif, W. Park, H. Ding, K. Lohmann, J. Mignot, M. Menary, O.H. Ottera, B. Wouters, D. Salas, A. Oka, A. Belluci and E. Volodin (2014): Multi-model comparison for North Atlantic multi-decadal variability. Climate Dynamics, 43, 2333-2348
Jungclaus, J.H., K. Lohmann and D. Zanchettin (2014): Enhanced 20th century heat transfer to the Arctic simulated in the context of climate variations over the last millennium. Climate of the Past, 10, 2201-2213
2015:
Lohmann, K., J. Mignot, H.R. Langehaug, J.H. Jungclaus, D. Matei, O.H. Ottera, Y.Q. Gao, T.L. Mjell, U.S. Ninnemann and H.F. Kleiven (2015): Using simulations of the last millennium to understand climate variability seen in paleo-observations: Similar variation of Iceland-Scotland overflow strength and Atlantic Multidecadal Oscillation. Climate of the Past, 11, 203-216
Gao, Y.Q., J. Sun, F. Li, S. He, S. Sandven, Q. Yan, Z. Zhang, K. Lohmann, N. Keenlyside, T. Furevik and L. Suo (2015): Arctic sea ice and Eurasian climate: A review. Advances in Atmospheric Sciences, 32, 92-114
Moreno-Chamarro, E., D. Zanchettin, K. Lohmann and J.H. Jungclaus (2015): Internally generated decadal cold events in the northern North Atlantic and their possible implications for the demise of the Norse settlements in Greenland. Geophysical Research Letters, 42, 908-915
Mueller, W.A., D. Matei, M. Bersch, J.H. Jungclaus, H. Haak, K. Lohmann, G. Compo, P.D. Sardeshmukh and J. Marotzke (2015): A 20th-century reanalysis forced ocean model to reconstruct North Atlantic multi-decadal climate variability from 1872-2010. Climate Dynamics, 44, 1935–1955
2016:
Hatun, H., K. Lohmann, D. Matei, J.H. Jungclaus, S. Pacariz, M. Bersch, A. Gislason, J. Olafsson and P.C. Reid (2016): An inflated subpolar gyre blows life toward the northeastern Atlantic. Progress in Oceanography, 147, 49-66
2017:
Langehaug, H.R., D. Matei, T. Eldevik, K. Lohmann and Y.Q. Gao (2017): On model differences and skill in predicting sea surface temperature in the Nordic and Barents Seas. Climate Dynamics, 48, 913-933
Moreno-Chamarro, E., D. Zanchettin, K. Lohmann and J.H. Jungclaus (2017): An abrupt weakening of the subpolar gyre as trigger of Little Ice Age-type episodes. Climate Dynamics, 48, 727-744
Moreno-Chamarro, E., D. Zanchettin, K. Lohmann, J. Luterbacher and J.H. Jungclaus (2017): Winter amplification of the European Little Ice Age cooling by the subpolar gyre. Nature Science Reports, 7, 9981
2019:
Gutjahr, O., D.A. Putrasahan, K. Lohmann, J.H. Jungclaus, J.S. von Storch, N. Brueggemann, H. Haak and A. Stoessel (2019): Max Planck Institute Earth System Model (MPI-ESM1.2) for the High-Resolution Model Intercomparison Project (HighResMIP). Geoscientific Model Development, 12, 3241-3281
Putrasahan, D.A., K. Lohmann, J.S. von Storch, J.H. Jungclaus, O. Gutjahr and H. Haak (2019): Surface flux drivers for the slowdown of the Atlantic meridional overturning circulation in a high‐resolution global coupled climate model. Journal of Advances in Modeling Earth Systems, 11, 1349-1363
Thomas, M.A., A. Devasthale, T. Koenigk, K. Wyser, M.J. Roberts, C.D. Roberts and K. Lohmann (2019): A statistical and process-oriented evaluation of cloud radiative effects in high-resolution global models. Geoscientific Model Development, 12, 1679-1702
2020:
Bador, M., J. Boe, L. Terray, L.V. Alexander, A. Baker, A. Bellucci, R.J. Haarsma, T. Koenigk, M.P. Moine, K. Lohmann, D.A. Putrasahan, C.D. Roberts, M.J. Roberts, E. Scoccimarro, R. Schiemann, J. Seddon, R. Senan, S. Valcke and B. Vanniere (2020): Impact of higher spatial atmospheric resolution on precipitation extremes over land in global climate models. Journal of Geophysical Research, 125, e2019JD032184
Boe, J., L. Terray, M.P. Moine, S. Valcke, A. Bellucci, S. Drijfhout, R.J. Haarsma, K. Lohmann, D.A. Putrasahan, C.D. Roberts, M.J. Roberts, E. Scoccimarro, J. Seddon, R. Senan and K. Wyser (2020): Past long-term summer warming over western Europe in new generation climate models: role of large-scale atmospheric circulation. Environmental Research Letters, 15, 084038
Roberts, M.J., L.C. Jackson, C.D. Roberts, V. Meccia, D. Docquier, T. Koenigk, P. Ortega, E. Moreno‐Chamarro, A. Bellucci, A. Coward, S. Drijfhout, E. Exarchou, O. Gutjahr, H. Hewitt, D. Iovino, K. Lohmann, D.A. Putrasahan, R. Schiemann, J. Seddon, L. Terray, X. Xu, Q. Zhang, P. Chang, S.G. Yeager, F.S. Castruccio, S. Zhang and L. Wu (2020): Sensitivity of the Atlantic meridional overturning circulation to model resolution in CMIP6 HighResMIP simulations and implications for future changes. Journal of Advances in Modeling Earth Systems, 12, e2019MS002014
Schiemann, R., P. Athanasiadis, D. Barriopedro, F. Doblas-Reyes, K. Lohmann, M.J. Roberts, D.V. Sein, C.D. Roberts, L. Terray and P.L. Vidale (2020): Northern Hemisphere blocking simulation in current climate models: evaluating progress from the Climate Model Intercomparison Project Phase~5 to 6 and sensitivity to resolution. Weather and Climate Dynamics, 1, 277-292
2021:
Gutjahr, O., N. Brueggemann, H. Haak, J.H. Jungclaus, D.A. Putrasahan, K. Lohmann and J.S. von Storch (2021): Comparison of ocean vertical mixing schemes in the Max Planck Institute Earth System Model (MPI-ESM1.2). Geoscientific Model Development, 14, 2317–2349
Putrasahan, D.A., O. Gutjahr, H. Haak, J.H. Jungclaus, K. Lohmann, M.J. Roberts and J.S. von Storch (2021): Effect of resolving ocean eddies on the transient response of global mean surface temperature to abrupt 4xCO2 forcing. Geophysical Research Letters, 48, e2020GL092049
Ruprich-Robert, Y., E. Moreno-Chamarro, X. Levine, A. Bellucci, C. Cassou, F. Castruccio, P. Davini, R. Eade, G. Gastineau, L. Hermanson, D.L.R. Hodson, K. Lohmann, J. Lopez-Parages, P.A. Monerie, D. Nicolì, S. Qasmi, C.D. Roberts, E. Sanchez-Gomez, G. Danabasoglu, N. Dunstone, M. Martin-Rey, R. Msadek, J. Robson, D. Smith and E. Tourigny (2021): Impacts of Atlantic multidecadal variability on the tropical Pacific: a multi-model study. NPJ Climate and Atmospheric Science, 4, 33
Education
1993:
Erasmus Program: School of Ocean Sciences, University of North Wales, Bangor, UK
1993 - 1999:
Study of physical oceanography, University of Kiel, Germany
Thesis (in German): Tidal correction of ship-based current measurements
2000-2005:
PhD at the Max Planck Institute for Meteorology, Hamburg, Germany
Thesis: Tropical Pacific/Atlantic climate variability and the subtropical-tropical cells
Work experience
September 2005 - October 2008:
PostDoc at the Nansen Environmental and Remote Sensing Center / Bjerknes Center for Climate Research, Bergen, Norway
EU-FP6 Project DYNAMITE (Understanding the dynamics of the coupled climate system)
since November 2008:
Scientist at the Max Planck Institute for Meteorology, Hamburg, Germany
EU-FP7 Project THOR (Thermohaline overturning circulation - at risk?), 2009-2012
EU-FP7 Project NACLIM (North Atlantic climate: Predictability of the climate in the North Atlantic/European sector related to North Atlantic/Arctic Ocean sea surface temperature and sea ice variability and change), 2013-2015
EU-H2020 Project PRIMAVERA (Process-based climate simulation: Advances in high-resolution modelling and European climate risk assessment), 2016-2019
EU-H2020 Project BlueAction (Arctic impact on weather and climate), 2017-2020
JPI-Oceans/JPI-Climate Project ROADMAP (The role of ocean dynamics and ocean-atmosphere interactions in driving climate variations and future projections of impact-relevant extreme events), 2020-2023