“Acceptance Speech” Frontiers of Knowledge Award 2023 in Climate Change
Dorthe Dahl-Jensen
Acceptance speech by Dorthe Dahl-Jensen, winner of the 2023 Frontiers of Knowledge Award in Climate Change, who was honored alongside Jean Jouzel, Valérie Masson-Delmotte, Jakob Schwander and Thomas F. Stocker for demonstrating the relationship between greenhouse gases and global temperatures over the past 800,000 years. Her research on ice cores from Greenland and Antarctica has made it possible to reconstruct past climate variations and understand the mechanisms of global warming.
Dahl-Jensen explains how air bubbles trapped in polar ice preserve information about the composition of the ancient atmosphere, making it possible to study the relationship between greenhouse gas concentrations and temperature changes. She warns that current greenhouse gas levels exceed those recorded over the past 800,000 years and emphasizes the need to reduce emissions. She also highlights the impo