Joint Oslo seminar in atmospheric, ocean and climate science, September 17

Title: Marine or Terrestrial? Unravelling the sources of ice nucleating particles in the polar regions

Speaker: Jessie Creamean, Colorado State University

Image: Jessie Creamean, Colorado State University

Speaker: Jessie Creamean, Colorado State University

Abstract:

The polar regions are warming faster than anywhere else on the planet, yet the roles of aerosols and clouds in this rapid change remain poorly constrained. Ice-nucleating particles (INPs) - tiny aerosols that trigger ice formation in clouds - are key but still enigmatic players in the polar energy budget. In this talk, I will share new insights into the emerging sources of Arctic INPs and the potential balance between marine and terrestrial influences. I will also highlight our latest INP research across the Southern Ocean and Antarctica, offering a cross-polar perspective on how these particles shape clouds at the ends of the Earth.

What is the Joint Oslo Seminar (JOS):

  • Atmospheric and climate sciences have a stronghold in Oslo among the four institutions University of Oslo, the Meteorological Institute, CICERO and NILU.
  • This joint seminar invites renowned international experts to contribute to an informal series of lectures, meant to create interaction with the Oslo atmospheric and climate science community on recent highlights and analysis in the field.
  • Normally seminars will be held on Thursdays (12:15 pm -1pm).
Published Aug. 18, 2026 3:30 PM - Last modified Aug. 25, 2026 1:22 PM