September 10th: James Kirkham, British Antarctic Survey, UK
Topic: Ice shelf collapse and meltwater drainage in the North Sea during the Quaternary: insights from high resolution 3D seismic data
Recommended paper: Kirkham, J.D., Hogan, K.A., Larter, R.D. et al. Change in iceberg calving behavior preceded North Sea ice shelf disintegration during the last deglaciation. Nat Commun 16, 3184 (2025). DOI: 10.1038/s41467-025-58304-5

September 17th: Yuntao Bao, Ohio State University, USA
Topic: Investigating the Origins of Model Uncertainty in Holocene Temperature Simulations
Recommended paper: Bao, Y., Liu, Z., Thompson, L. G., Mosley-Thompson, E., Wan, L., & Lu, J. (2025). Model sensitivity to insolation forcing and uncertainties in Holocene temperature simulations. Paleoceanography and Paleoclimatology, 40, e2024PA004958. DOI: 10.1029/2024PA004958

September 24th: Sophie Warken, Ruprecht-Karls-University Heidelberg, Germany
Topic: Discovery of Speleothem sulfur spike from Laacher See Eruption c. 13ka BP synchronizes climate records from Central Europe and Greenland
Recommended paper: Sophie F. Warken et al., Discovery of Laacher See eruption in speleothem record synchronizes Greenland and central European Late Glacial climate change. Sci. Adv. 11, eadt4057 (2025). DOI: 10.1126/sciadv.adt4057

October 1st: Michael Sarnthein, University of Kiel, Germany
Topic: Meltwater-induced salinity drop in Greenland Sea induced changes in AMOC and the onset of Heinrich-1 stadial 18 400 years ago – Potential analog to modern trends
Recommended papers: 

• Sarnthein, M., & Blaser, P. (2025). Peak glacial-to-Heinrich-1 changes in Denmark Strait Overflow and seawater stratification in the Nordic Seas, a switchboard of changes in Atlantic Meridional Overturning Circulation and the “Nordic Heat Pump.” Quaternary Science Reviews, 355, 109181. DOI: 10.1016/j.quascirev.2025.109181

• Sarnthein & Blaser 2025 Supplemental Information

October 8th: Allie Coonin, Brown University, USA
Topic: Sea-level fingerprinting Meltwater Pulse 1A with transient solid Earth deformation reveals global cascade of ice loss
Recommended paper: Coonin, A.N., Lau, H.C.P. & Coulson, S. Meltwater Pulse 1A sea-level-rise patterns explained by global cascade of ice loss. Nat. Geosci. 18, 254–259 (2025). DOI: 10.1038/s41561-025-01648-w

October 15th: Allie Balter-Kennedy, Tufts University, USA
Topic: Update from GreenDrill: Subglacial Sediment and Bedrock Record Reduced Northern Greenland Ice Sheet Extent During the Pleistocene
Recommended paper: Walcott-George, C., Brown, N., Briner, J., Balter-Kennedy, A., Young, N., Kuhl, T., Moravec, E., Anandakrishnan, S., Stevens, N., Keisling, B., Deconto, R., Gkinis, V., & Schaefer, J. (2025). Holocene deglaciation of Prudhoe Dome, northwest Greenland. EarthArXiv (California Digital Library). DOI: 10.31223/x5mb1t

October 22nd: David Harning, University of Colorado, USA
Topic: Holocene paleoecology in Iceland: Lessons from ancient DNA and lipid biomarkers in lake sediments
Recommended paper: Harning, D.J., Sacco, S., Raberg, J.H. et al. Both redox potential and climate control molecular proxies in Icelandic Holocene lake sediments. Commun Earth Environ 6, 763 (2025). DOI: 10.1038/s43247-025-02701-7 

October 29th at 10am EST: Helen Innes, University of St Andrews, UK
Topic: Ice core evidence for the Los Chocoyos supereruption disputes millennial-scale climate impact
Recommended paper: Innes, H.M., Hutchison, W., Sigl, M. et al. Ice core evidence for the Los Chocoyos supereruption disputes millennial-scale climate impact. Commun Earth Environ 6, 137 (2025). DOI: 10.1038/s43247-025-02095-6

November 5th: Joshua Cuzzone, UCLA, USA  
Topic: Simulating the Holocene evolution of the Greenland Ice Sheet using the Ice Sheet and Sea-level System Model
Recommended paper: Briner, J.P., Cuzzone, J.K., Badgeley, J.A. et al. Rate of mass loss from the Greenland Ice Sheet will exceed Holocene values this century. Nature 586, 70–74 (2020). DOI: 10.1038/s41586-020-2742-6

November 12th: Sam Mark, University of Buffalo, USA
Topic: Testing the strength of the permafrost carbon feedback during the last deglaciation
Recommended paper: Jones, M.C., Grosse, G., Treat, C. et al. Past permafrost dynamics can inform future permafrost carbon-climate feedbacks. Commun Earth Environ 4, 272 (2023). DOI: 10.1038/s43247-023-00886-3

November 19th: Marc Hijma, Deltares, Netherlands
Topic: Global sea-level rise in the early Holocene revealed from North Sea peats
Recommended paper: Hijma, M.P., Bradley, S.L., Cohen, K.M. et al. Global sea-level rise in the early Holocene revealed from North Sea peats. Nature 639, 652–657 (2025). DOI: 10.1038/s41586-025-08769-7

November 26th: No speaker (U.S. Thanksgiving break)

December 3rd: Herman Fuglestvedt, Norwegian Meteorological Institute, Norway
Topic: Reconstructing the 10th‐century Eldgjá eruption and its climatic and environmental impacts
Recommended paper: Fuglestvedt, H. F., Gabriel, I., Sigl, M., Thordarson, T., & Krüger, K. (2025). Revisiting the 10th-century Eldgjá eruption: Modeling the climatic and environmental impacts. Geophysical Research Letters, 52, e2024GL110507. DOI: 10.1029/2024GL110507