Gattuso, J.-P., Magnan, A.K.M. (2022). L'océan, un garde-fou climatique. Polytechnique Insights.

Read the article online (in French)

Key Messages

  • The ocean is a "climate regulator" for the planet. In 50 years, it will have absorbed 93% of the excess heat on earth, and 25% of the CO2 released by human activities, thus limiting the warming of the atmosphere.
  • However, this is at the cost of significant repercussions on its chemical and physical functioning, including warming, acidification, deoxygenation and sea level rise.
  • The ocean proposes different solutions to limit global warming, which researchers have categorized. We have solutions called Decisive, Low Regret, Unproven and Risky.
  • While Decisive and Low-Regret measures are clearly a priority for action, they will not be sufficient. Scientific research must continue to explore the field of Unproven solutions and to understand the conditions of application of Risky solutions.