Dr. Janin Schaffer

Science Coordinator

Dr. Janin Schaffer works as Science Coordinator in the institute's directors team since October 2021.

Janin studied Climate Physics at the GEOMAR, Helmholtz Centre for Ocean Research Kiel. From 2014-2021, she worked as a physical oceanographer at the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, receiving her doctorate in the field of Physical Oceanography in 2018. During her PhD and Postdoc, her research focus was on ocean-glacier interaction in Northeast Greenland. She co-organized and joined several research expeditions to Greenland, and coordinated the collaborative research project GROCE (Greenland Ice Sheet/Ocean Interaction) funded by the BMBF.


Potsdam Institute for Climate Impact Research (PIK)
T +49 (0)331 288 20905
P.O. Box 60 12 03
14412 Potsdam



Rabe, B, Heuzé, C, Regnery, J, Aksenov, Y, Allerholt, J, Athanase, M, Bai, Y, Basque, C, Bauch, D, Baumann, TM, Chen, D, Cole, ST, Craw, L, Davies, A, Damm, E, Dethloff, K, Divine, DV, Doglioni, F, Ebert, F, Fang, Y-C, Fer, I, Fong, AA, Gradinger, R, Granskog, MA, Graupner, R, Haas, C, He, H, He, Y, Hoppmann, M, Janout, M, Kadko, D, Kanzow, T, Karam, S, Kawaguchi, Y, Koenig, Z, Kong, B, Krishfield, RA, Krumpen, T, Kuhlmey, D, Kuznetsov, I, Lan, M, Laukert, G. Lei, R, Li, T, Torres-Valde  ́s, S, Lin, L, Lin, L, Liu, H, Liu, N, Loose, B, Ma, X, MacKay, R, Mallet, M, Mallett, RDC, Maslowski, W, Mertens, C, Mohrholz, V, Muilwijk, M, Nicolaus, M, O’Brien, JK, Perovich, D, Ren, J, Rex, M, Ribeiro, N, Rinke, A, Schaffer, J, Schuffenhauer, I, Schulz, K, Shupe, MD, Shaw, W, Sokolov, V, Sommerfeld, A, Spreen, G, Stanton, T, Stephens, M, Su, J, Sukhikh, N, Sundfjord, A, Thomisch, K, Tippenhauer, S, Toole, JM, Vredenborg, M, Walter, M, Wang, H, Wang, L, Wang, Y, Wendisch, M, Zhao, J, Zhou, M, Zhu, J. 2022. Overview of the MOSAiC expedition: Physical oceanography. Elementa: Science of the
Anthropocene 10(1).


Huhn, O.,  Rhein, M.,  Kanzow, T.,  Schaffer, J., &  Sültenfuß, J. (2021):  Submarine meltwater from Nioghalvfjerdsbræ (79 North Glacier), Northeast GreenlandJournal of Geophysical Research: Oceans, 126, e2021JC017224.

Krisch, S., Hopwood, M.J., Schaffer, J., et al. (2021): The 79°N Glacier cavity modulates subglacial iron export to the NE Greenland ShelfNature Communications, 12, 3030.

von Albedyll, L., Schaffer, J., and Kanzow, T. (2021):  Ocean variability at Greenland’s largest glacier tongue linked to continental shelf circulationJournal of Geophysical Research: Oceans126, e2020JC017080.


Schaffer, J., Kanzow, T., von Appen, W. J., von Albedyll, L., Arndt, J. E., and Roberts, D. H. (2020): Bathymetry constrains ocean heat supply to Greenland’s largest glacier tongue, Nature Geoscience, 13, 227-231.

Münchow, A, Schaffer, J., and Kanzow, T. (2020): Ocean Circulation Connecting Fram Strait to Glaciers off Northeast Greenland: Mean Flows, Topographic Rossby Waves, and Their Forcing, Journal of Physical Oceanography, 50 (2), 509-530.

Lindeman, M. R., Straneo, F., Wilson, N. J., Toole, J. M., Krishfield, R. A., Beaird, N. L., Kanzow, T., and Schaffer, J. (2020): Ocean Circulation and Variability Beneath Nioghalvfjerdsbræ (79 North Glacier) Ice Tongue, Journal of Geophysical Research-Oceans, 125 (8).


Mayer, C., Schaffer, J., Hattermann, T., et al. (2018): Large ice loss variability at Nioghalvfjerdsfjorden Glacier, Northeast-Greenland, Nature Communications, 9 (1).


Schaffer, J., von Appen, W. J., Dodd, P. A., Hofstede, C., Mayer, C., de Steur, L., and Kanzow, T. (2017): Warm water pathways toward Nioghalvfjerdsfjorden Glacier, Northeast Greenland, Journal of Geophysical Research-Oceans, 122(5), 4004-4020.

Schaffer, J. (2017): Ocean impact on the 79 North Glacier, Northeast Greenland, PhD thesis, University Bremen.


Schaffer, J., Timmermann, R., Arndt, J. E., Kristensen, S. S., Mayer, C., Morlighem, M., and Steinhage, D. (2016): A global, high-resolution data set of ice-sheet topography, cavity geometry,and ocean bathymetry, Earth System Science Data, 8, 543-557.

Schaffer, J., Kanzow, T., Jochumsen, K, Lackschewitz, K, Tippenhauer, S., Zhurbas, V. M., and Quadfasel, D. (2016): Enhanced turbulence driven by mesoscale motions and flow-topography interaction in the Denmark Strait Overflow plume, Journal of Geophysical Research-Oceans, 121(19), 7650-7672.

2019 - 2021

Lecturer for 'Physical Oceanography' at the University of Applied Sciences Bremerhaven, Germany
Introduction lecture for Bachelor Students.

Public talks
Presentations at school events, e.g., KlimaWissen2021 or Junior Uni DigiTal.
Keynote talks in local clubs, e.g., LebensLangesLernen e.V. or Heimatverein Platjenwerbe e.V.
Presentations on social media, e.g., YouTube channel 'Wissenschaft fürs Wohnzimmer'.