Portrait of Jonathan Raberg
Postdoctoral Scholar
• Paleoclimatology • Organic geochemistry • Quaternary research • Spectroscopy


I'm interested in using organic geochemical proxies, especially brGDGTs, to study the paleoclimate/paleoecology of Baffin Island and Iceland and constrain predictions for future Arctic warming and climate change. 


  • PhD, Geological Sciences: University of Colorado Boulder, 2021
  • MS, Chemistry: University of California, Berkeley, 2015
  • BA, Chemistry: Carleton College, 2012


Selected publications

Crump, C., Fréchette, B., Power, M., Cutler, S., de Wet, G., Raynolds, M. K., Raberg, J., Briner, J. P., Thomas, E. K., Sepúlveda, J., Shapiro, B., Bunce, M., and Miller, G. H., 2021: Ancient plant DNA reveals High Arctic greening during the Last Interglacial. Proceedings of the National Academy of Sciences, 118(13): e2019069118. DOI: 10.1073/pnas.2019069118

Raberg, J., Harning, D., Crump, S., de Wet, G., Blumm, A., Kopf, S., Geirsdóttir, Á., Miller, G. H., and Sepúlveda, J., 2021: Revised fractional abundances and warm-season temperatures substantially improve brGDGT calibrations in lake sediments. Biogeosciences, 18(12): 3579-3603. DOI: 10.5194/bg-18-3579-2021

Raberg, J., Vatamanu, J., Harris, S. J., van Oversteeg, C. H. M., Ramos, A., Borodin, O., and Cuk, T. 2019: Probing electric double-layer composition via in situ vibrational spectroscopy and molecular simulations. Journal of Physical Chemistry Letters, 10(12): 3381-3389. DOI: 10.1021/acs.jpclett.9b00879