黑料视频

Research statement

The ongoing decline of sea ice and the melting of ice sheets have profound, yet still insufficiently understood impacts on ocean circulation, the transport of biogeochemically relevant substances, and the climate. In this context, the polar regions are particularly sensitive, while at the same time acting as globally significant hotspots of change. My research therefore focuses on ocean circulation and the associated freshwater, nutrient, and trace element fluxes in polar systems. To this end, I investigate oxygen isotopes as well as the concentrations and isotopic signatures of trace elements and nutrients on continental shelves, in the open ocean, and within the marine cryosphere. I am particularly interested in the input of freshwater and meltwater, their downstream transport and far-field impacts beyond source regions, as well as in sea ice鈥搊cean interactions. Sea ice plays a key role in this regard 鈥� as a biogeochemical interface between the atmosphere and surface ocean layers, and between coastal regions and the open ocean. My work is embedded in international research initiatives and is driven by the development and application of state-of-the-art geochemical tracers.

Biography

I completed my B.Sc. (2008) and M.Sc. (2011) at the University of Freiburg before working for nearly two years as a geochemist in Colombia, where I focused on gold and platinum exploration and environmental impact assessments. After returning to Europe, I received my Ph.D. (2017) from Kiel University with a dissertation on the use of different oceanic tracers to study circulation and biogeochemical processes in the Arctic Ocean. As a postdoctoral researcher at 黑料视频, I expanded my expertise in oceanic tracers and contributed to large research initiatives such as GEOTRACES and MOSAiC. In 2020, I was awarded an international postdoctoral fellowship from the Ocean Frontier Institute and conducted research at Dalhousie University and the Woods Hole Oceanographic Institution (WHOI) on the effects of East Greenland on nutrient availability in the North Atlantic. I currently lead the Marie Curie project 鈥�ICEotopes鈥�, which investigates the interplay of physical and biogeochemical processes at the sea ice鈥搊cean interface and, following an international phase at WHOI and the University of Bristol, is now being continued at 黑料视频.

Peer-reviewed publications

• Laukert, G., Bauch, D., Rabe, B., Krumpen, T., Damm, E., Kienast, M., Hathorne, E., Vredenborg, M., Tippenhauer, S., Andersen, N., Meyer, H., Mellat, M., D鈥橝ngelo, A., Sim玫es Pereira, P., Nomura, D., Horner, T.J., Hendry, K., Kienast, S.S. (2025). Dynamic ice鈥搊cean pathways along the Transpolar Drift amplify the dispersal of Siberian matter. Nat. Commun. 16, 3172. 
• Schulz, K., Koenig, Z., Muilwijk, M., Bauch, D., Hoppe, C.J., Droste, E., Hoppmann, M., Chamberlain, E.J., Laukert, G., Stanton, T. and Zurita, A.Q., Fer, I., Heuz茅, C., Karam, S., Mieruch-Schn眉lle, S., Baumann, T. M., Vredenborg, M., Tippenhauer, S., Granskog, M. A. (2024). The Eurasian Arctic Ocean along the MOSAiC drift in 2019-2020: An interdisciplinary perspective on properties and processes. Elem. Sci. Anth. 12: 1. 
• Xu, A., Hathorne, E., Laukert, G., Frank, M. (2023): Overlooked riverine contributions of dissolved neodymium and hafnium to the Amazon estuary and oceans. Nat. Commun. 14, 4156. .
• Rabe, B., Martin, T., Solomon, A., Assmann, K. M., Biddle, L. C., Haine, T., Hattermann, T., Haumann, F. A., Jahn, A., Karpouzoglou, T., Laukert, G., Naveira Garabato, A., Rosenblum, E., Sikes, E., Yin, L. , Zhang, X. (2023): Polar Fresh Water in a Changing Global Climate: Linking Arctic and Southern Ocean Processes. Bull. Amer. Meteor. Soc. 104, E970鈥揈979. .
• Yu, Y., Xie, R. C., Gutjahr, M., Laukert, G., Cao, Z., Hathorne, E., Siebert, C., Patton, G., Frank, M. (2022): High latitude controls on dissolved barium isotope distributions in the global ocean. Geochem. Perspect. Lett. 24, pp. 22-26. .
• Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, V., Doering, K., H枚lemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2022): Nutrient and silicon isotope dynamics in the Laptev Sea and implications for nutrient availability in the Transpolar Drift. Global Biogeochem. Cycles 36, e2022GB007316. .
• Laukert, G., Peeken, I., Bauch, D., Krumpen, T., Hathorne, E. C., Werner, K., Gutjahr, M., Frank, M. (2022): Neodymium isotopes trace marine provenance of Arctic sea ice. Geochem. Perspect. Lett. 22, pp. 10-15. .
• Rabe, B., et al., Laukert, G. (2022): Overview of the MOSAiC expedition: Physical oceanography. Elementa 10(1), 00062. .
• Paffrath, R., Laukert, G., Bauch, D., Rutgers van der Loeff, M., Pahnke, K. (2021): Separating individual contributions of major Siberian rivers in the Transpolar Drift of the Arctic Ocean. Sci. Rep. 11, 8216. .
• Fuhr, M., Laukert, G., Yu, Y., N眉rnberg, D., Frank, M. (2021): Tracing water mass mixing from the Equatorial to the North Pacific Ocean with dissolved neodymium isotopes and concentrations. Frontiers Mar. Sci. 7, 603761. .
• Rahlf, P., Laukert, G., Hathorne, E. C., Vieira, L. H., Frank, M. (2021): Dissolved neodymium and hafnium isotopes and rare earth elements in the Congo River Plume: Tracing and quantifying continental inputs into the southeast Atlantic. Geochim. Cosmochim. Acta 294, pp. 192-214. .
• Janout, M. A., H枚lemann, J., Laukert, G., Smirnov, A., Krumpen, T., Bauch, D., Timokhov, L. (2020): On the variability of stratification in the freshwater-influenced Laptev Sea region. Frontiers Mar. Sci., 7:543489. .
• Rahlf, P., Hathorne, E. C., Laukert, G., Gutjahr, M., Weldeab, S., Frank, M. (2020): Tracing water mass mixing and continental inputs in the southeastern Atlantic Ocean with dissolved neodymium isotopes. Earth Planet. Sci. Lett. 530, 11944. .
• Laukert, G., Makhotin, M., Petrova, M. V., Frank, M., Hathorne, E. C., Bauch, D., B枚ning, P., Kassens, H. (2019): Water mass transformation in the Barents Sea inferred from radiogenic neodymium isotopes, rare earth elements and stable oxygen isotopes. Chem. Geol. 511, pp. 416-430. .
• Laukert, G., Frank, M., Hathorne, E. C., Krumpen, T., Rabe, B., Bauch, D., Werner, K., Peeken, I., Kassens, H. (2017): Pathways of Siberian freshwater and sea ice in the Arctic Ocean traced with radiogenic neodymium isotopes and rare earth elements. Polarforschung 87 (1), pp. 3-13. .
• Laukert, G., Frank, M., Bauch, D., Hathorne, E. C., Gutjahr, M., Janout, M., H枚lemann, J. (2017): Transport and transformation of riverine neodymium isotope and rare earth element signatures in high latitude estuaries: A case study from the Laptev Sea. Earth Planet. Sci. Lett. 477, pp. 205-217. .
• Laukert, G., Frank, M., Bauch, D., Hathorne, E. C., Rabe, B., von Appen, W. J., Wegner, C., Zieringer, M., Kassens, H. (2017): Ocean circulation and freshwater pathways in the Arctic Mediterranean based on a combined Nd isotope, REE and oxygen isotope section across Fram Strait. Geochim. Cosmochim. Acta 202, pp. 285-309. .
• Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. E., Hoppe, P., Kl眉gel, A. (2014): High-pressure reactive melt stagnation recorded in abyssal pyroxenites from the ultraslow-spreading Lena Trough, Arctic Ocean. J. Petrology 55 (2), pp. 427-458. .

Contributions to conferences, seminars and workshops

• Laukert, G. (2025): Arctic freshwater export through Fram Strait 鈥� new insights from MOSAiC tracer studies. ASOF Meeting.
• Laukert, G. (2025): Meltwater pathways in polar regions: Insights from chemical provenance tracers. WHOI Postdoc Symposium.
• Laukert, G. (2024): Tracing freshwater and matter transport in the Arctic Ocean. WHOI Department Seminar.
• Laukert, G., Peeken, I., Hathorne, E., Bauch, D., Meyer, H., Arndt, S., Haas, C. (2024): Southern Ocean summer sea ice and snowpack are not significant reservoirs of dissolved rare earth elements despite substantial atmospheric contributions inferred from stable oxygen isotopes. Goldschmidt Conference.
• Keynote: Laukert, G. (2024): River water distribution and influence during MOSAiC based on isotopic provenance tracers. 3^rd MOSAiC Science Conference.
• Schulz, K., Koenig, Z., Muilwijk, M., Bauch, D., Hoppe, C.J.M., Droste, E.S., Hoppmann, M., Chamberlain, E.J., Laukert, G., Stanton, T., Quintanilla-Zurita, A., Fer, I., Heuz茅, C., Karam, S., Mieruch-Schn眉lle, S., Baumann, T., Vredenborg, M., Tippenhauer, S., Granskog, M.A. (2024): The Eurasian Arctic Ocean along the MOSAiC drift (2019-2020): An interdisciplinary perspective on properties and processes. 3^rd MOSAiC Science Conference.
• Bauch, D., Laukert, G., Damm, E., D鈥橝ngelo, A., Fang, Y.-C., Kuznetsov, I., Mellat, M., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2024): Winter sea-ice influence in relation to river water distribution in the Transpolar Drift during MOSAIC. 3^rd MOSAiC Science Conference.
• Vredenborg, M., Laukert, G., Rabe, B., Bauch, D., Tippenhauer, S. (2024): CTD and tracer-based insights into the advec4on pathways and modifica4on of Atlan4c Water during MOSAiC. 3^rd MOSAiC Science Conference.
• Bauch, D., Meyer, H., Damm, E., Abrahamsson, K., Angelopoulos, M., D鈥橝ngelo, A.,Laukert, G., Mellat, M., Nomura, D., Stefels, J. (2024): Spatial and temporal variability of stable isotopes (未D and 未¹⁸O) of sea ice cores from the MOSAiC ice camp during winter 2019/2020. 3^rd MOSAiC Science Conference.
• Laukert, G., Bauch, D., Damm, E., Krumpen, T., Kienast, S. S., Kienast M., Hathorne, E., Sim玫es Pereira, P., D鈥橝ngelo, A., Nomura, D. (2024): Constraining surface ocean influence on chemical variability in first-year ice during MOSAiC based on radiogenic neodymium isotopes. 3^rd MOSAiC Science Conference.
• Invited: Laukert, G. (2023): From Siberia to Fram Strait 鈥� Exploring nutrient pathways and cycling in the surface layer of the Arctic Ocean. Polar Biogeochemistry Seminar Series of the British Antarctic Survey.
• Bauch, D., Laukert, G., Andersen, N., Damm, E., D鈥橝ngelo, A., Fang, Y.-C., Kuznetsov, I., Mellat, M., Meyer, H., Rabe, B., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Sea-ice influence in the upper water column during MOSAiC based on oxygen isotopes. AGU Fall Meeting.
• Bauch, D., Andersen, N., Damm, E., D鈥橝ngelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Meyer, H., Rabe, B., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Stable oxygen isotopes from the MOSAIC expedition show vertical and horizontal variability of sea-ice and river water signals in the upper Arctic Ocean during winter. EGU General Assembly.
• Vredenborg, M., K枚rtke, W., Rabe, B., Walter, M., Tippenhauer, S., Huhn, O., Bauch, D., Laukert, G. (2023): Upper Arctic Ocean properties and water mass pathways during the year-round MOSAiC expedition in the context of historical observations. EGU General Assembly.
• Bauch, D., Andersen, N., Damm, E., D鈥橝ngelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Variability of river water and sea-ice signals in the upper Arctic Ocean during winter 2019/2020. 2nd MOSAiC Science Conference.
• Bauch, D., Andersen, N., Damm, E., D鈥橝ngelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Mellat, M., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Variability of sea鈥恑ce and river water signals in the upper Arctic Ocean during winter 2019/2020. 2nd MOSAiC Science Conference.
• Invited: Laukert, G. (2022): Elucidating Arctic Ocean advective pathways using chemical provenance tracers. Topic 2 Seminar, AWI and 黑料视频.
• Laukert, G., Bauch, D., Damm, E., Rabe, B., Kienast, S. S., Hathorne, E., Vredenborg, M., Krumpen, T., Tippenhauer, S., Sim玫es Pereira, P., A., D鈥橝ngelo, Nomura, D. (2022): Potential influence of Siberian river water on marine and sea-ice biology and biogeochemical cycles during the MOSAiC Drift Campaign. AGU Fall Meeting.
• Doering, K., Laukert, G., Kienast, S. S., Kienast, M., Kassens, H., Frank, M. (2022): Differing silicon isotope compositions of sponge spicules from Arctic and North Atlantic shelf sediments. IBiS.
• Anagnostou, E., Moffa Sanchez, P., Adey, W., Ries, J., Laukert, G., Williams, B. (2022): Potential causes and consequences of variability in Arctic and Labrador surface water temperature and pH during the last millennium from coralline algae. International Conference on Paleoceanography 14 (ICP14).
• Zhuravleva, A., Bauch, H. A., Frank, M., Hathorne, Ed C., Laukert, G., Filippova. A., Kienast, M. (2022): Changes in intermediate water circulation in the tropical North Atlantic during the Last Interglacial. Goldschmidt Conference.
• Laukert, G., Bauch, D., Damm, E., Rabe, B., Kienast, S. S., Hathorne, E., Vredenborg, M., Krumpen, T., Tippenhauer, S., Sim玫es Pereira, P., D鈥橝ngelo, A., Nomura, D. (2022): On the origin of freshwater and its potential influence on biology and biogeochemical cycles in sea ice and the upper ocean during the MOSAiC drift campaign. 1st MOSAiC Science Conference.
• Laukert, G., Kienast, S. S., Horner, T., Doering, K., Grasse, P., Bauch, D., Frank, M., Huhn, O., Mertens, C. (2022): East Greenland鈥檚 rising impact on the marine silicon cycle constrained by silicon isotopes. Goldschmidt Conference.
• Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, P., Doering, K., H枚lemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2022): Exploring the effects of potential large-scale hydrographic and biological changes in the Laptev Sea on future nutrient bioavailability in the Transpolar Drift. ASOF Meeting.
• Invited: Laukert, G. (2021): A provenance tracer journey through the Atlantic sector of the Arctic Ocean. Department Seminar, Dalhousie University.
• Laukert, G., Grasse, P., Novikhin, A., Povazhny, V., Doering, K., H枚lemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2021): Nutrient inputs, utilization and cycling in the Laptev Sea constrained by macronutrient concentrations and stable silicon isotopes. Goldschmidt Conference.
• Invited: Laukert, G. (2021): Isotopic tracers of ocean circulation and biogeochemical processes in the Arctic Ocean. 7th ArcTrain Annual Meeting.
• Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, V., Doering, K., H枚lemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2021): The Laptev Sea as a major source region of nutrients to the Transpolar Drift. Closing workshop of project CATS.
• Laukert, G., Bauch, D., Peeken, I., Krumpen, T., Werner, K., Hathorne, E., Gutjahr, M., Kassens, H., Frank, M.  (2020): Dissolved neodymium isotopes trace origin and spatiotemporal evolution of modern Arctic sea ice. EGU General Assembly.
• Invited: Laukert, G. (2020): Transformation of Atlantic Water in the modern Arctic Ocean. Selected presentation to the new 黑料视频 Director Katja Matthes. 黑料视频.
• Laukert, G., Frank, M. (2020): Tracing Arctic waters with neodymium isotopes 鈥� pioneering efforts, current advancements and future challenges. ASOF Meeting.
• Rahlf, P., Laukert, G., Hathorne, E. C., Frank, M. (2020): Congo River Influence on the Atlantic鈥檚 Rare Earth Element and Nd/Hf Isotope Distributions. Goldschmidt Conference.
• Invited: Laukert, G. (2020): Tracing Arctic waters with neodymium isotopes 鈥� pioneering efforts, current advancements, and future challenges. ASOF Meeting.
• Laukert, G., Bauch, D., Frank, M., Hathorne, E. C., Dreyer, J., Meulenbroek, K., Schaffer, J., Rabe, J., Paffrath, R., Pahnke, K., R. v. d. Loeff, M., Meyer, H., Graeve, M. (2019): Inconsistencies between Fram Strait water mass budget assessments based on radiogenic neodymium isotopes and nutrients. Goldschmidt Conference.
• Paffrath, R., Bauch, D., Rutgers van der Loeff, M., Laukert, G., Pahnke, K. (2019): Water mass contributions to the central Arctic 鈥� New insights from rare earth elements and Nd isotopes. Goldschmidt Conference.
• Rutgers van der Loeff, M., Stimac, I., Casacuberta, N., Wefing, A.-M., Laukert, G., Bauch, D., Paffrath, R., Provost, C., Karcher, M. (2019): Surface water changes during transit from North Pole to Fram Strait. Goldschmidt Conference.
• Laukert, G., Grasse, P., Doering, K., Novikhin, A., Povazhny, V., Frank, M., Kassens, H. (2019): Spatial and temporal variability in supply, transport and utilization of silicate in the Laptev Sea based on dissolved stable silicon isotopes. ASSW.
• Laukert, G., Grasse, P., Doering, K., Frank, M., Novikhin, A., Povazhny, V., Kassens, H. (2019): Constraints on the silicon cycle in the Siberian Shelf Seas. Gordon Research Conference.
• Laukert, G., Dreyer, J., Frank, M., Hathorne, E.C., Meulenbroek, K. (2018): Greenland-sourced freshwater traced on the North-East Greenland Shelf with radiogenic neodymium isotopes and rare earth elements. Goldschmidt Conference.
• Janout, M., H枚lemann, J., Bauch, D., Laukert, G., Piepenburg, D., Waite, A., Martinov, F., Novikhin, A., Povashny, V. (2018): The Laptev Sea region of freshwater influence: Oceanography and ecosystem implications. EGU General Assembly.
• Laukert, G., Dreyer, J., Frank, M., Hathorne, E.C., Meulenbroek, K. (2018): Greenland-sourced freshwater traced on the NE Greenland Shelf with neodymium isotopes and rare earth elements. Goldschmidt Conference.
• Laukert, G., Frank, M., Dreyer, J., Rabe, B., Bauch, D., von Appen, W.-J. (2018): Interannual variability of modern Fram Strait outflow revisited. POLAR Conference, Davos.
• Laukert, G., Frank, M., Hathorne, E. C., Siebert, C., Cao, Z. (2018): The dissolved stable barium isotope distribution in the Fram Strait, Arctic Ocean. Ocean Sciences Meeting.
• Laukert, G., Frank, M., Hathorne, E. C., Krumpen, T., Werner, K., Peeken, I. (2017): Tracing the origin of Arctic sea ice and freshwater by neodymium isotopes and rare earth elements. Goldschmidt Conference.
• Laukert, G. (2017): Task 3A 鈥� Mechanisms controlling the distribution of nutrients in the Laptev Sea (TRANSDRIFT XXIV and XXV). Kickoff Workshop of The Changing Arctic Transpolar System 鈥� CATS.
• Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Kassens, H., Timokhov, L. (2016): Dissolved Nd isotope and REE distributions trace interannual variability of water mass mixing and water-sediment interaction in the Laptev Sea. Goldschmidt Conference.
• Laukert, G., Frank, M., Hathorne, E. C., Wegner, C., Bauch, D., Kassens, H. and Timokhov, L. A. (2016): Water mass provenance and mixing in the Laptev Sea based on dissolved Nd isotopes and REE distributions. Workshop: Biogeochemical Studies in the Siberian Shelf Seas.
• Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Andersen, N., Zieringer, M., Kassens, H. and Timokhov, L. A. (2016): Water mass provenance and mixing at Fram Strait and in the Laptev Sea based on dissolved Nd isotopes and REE distributions. 11. Workshop on Russian-German Cooperation: Laptev Sea System 鈥� The Transpolar System of the Arctic Ocean.
• Petrova, M., Frank, M., Kuznetsov, V. and Laukert, G. (2016): Neodymium isotopes and rare earth element distribution in the Barents Sea, Arctic Ocean. 11. Workshop on Russian-German Cooperation: Laptev Sea System 鈥� The Transpolar System of the Arctic Ocean.
• Wegner, C., H枚lemann, J., Janout, M., Bauch, D., Laukert, G., Frank, M., Krumpen, T., Selyuzhenok, V., Novikhin, A., Polyakova, Y., Kryukova, I., Kassens, H. and Timokhov, L. A. (2016): Transpolar matter fluxes. 11. Workshop on Russian-German Cooperation: Laptev Sea System 鈥� The Transpolar System of the Arctic Ocean.
• Laukert, G., Frank, M., Hathorne, E. C., Wegner, C., Kassens, H. (2015): Understanding mechanisms controlling the Arctic environment in the Laptev Sea 鈥� Implications from Nd isotopes and rare earth elements. ASSW.
• Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C. and Kassens, H. (2015): What can Nd isotopes and REEs tell us about the water mass distribution in the Eurasian Arctic Ocean? 6. Early Career Scientists Conference for Marine and Climate Research.
• Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Cao, Z., Zieringer, M., Andersen, N., Kassens, H. (2014): Water mass provenance and mixing in the Fram Strait, Arctic Ocean 鈥� Multi-proxy evidence from dissolved Nd isotopes, REEs, Ba, nutrients, and 未18O. AGU Fall Meeting.
• Schmidt, R.B., von der Handt, A., Grimm, C., Laukert, G., Mojica, J. (2012): Petrology of the Alto Condoto ultramafic-mafic complex, Colombia. European Mineralogical Conference.
• Grimm, C., von der Handt, A., Schmidt, R.B., Laukert, G., Mojica, J. (2012): Petrology of the mafic-ultramafic Viravira complex, Colombia: Fragments of an Alaskan-type intrusion. European Mineralogical Conference.
• Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. (2011): Pyroxenites from Lena Trough (Arctic Ocean) 鈥� High pressure reactive melt stagnation. AGU Fall Meeting.
• Von der Handt, A., Hellebrand, E., Laukert, G., Schmidt, R., Snow, J. (2011): Melt stagnation in the upper mantle and lower crust at slow- to ultraslow-spreading ridges. AGU Fall Meeting.
• Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. and Hoppe, P. (2011): Abyssal pyroxenites from the ultraslow-spreading Lena Trough 鈥� Reactive melt stagnation at high pressures. Science Days, University of Freiburg.
• Laukert, G., M眉ller-Sigmund H., Danilewsky A. and Gier茅 R. (2008): Mineralization of rare-earth pegmatites from Norway and Sweden. Science Days, University of Freiburg.