Press & Media
High CO2 Levels Can Destabilize Marine Layer Clouds
At high enough atmospheric carbon dioxide (CO2) concentrations, marine stratus clouds become unstable and disappear, triggering a spike in global warming, according to a new modeling study. The results could help solve the longstanding mystery in paleoclimatology of how past climates such as the Eocene (around 50 million years ago) got to be so warm that crocodiles could live in the Arctic, without excessively high levels of greenhouse gases.
New Climate Model to Be Built from the Ground Up
Scientists and engineers rethink how to model and predict climate
Facing the certainty of a changing climate coupled with the uncertainty that remains in predictions of how it will change, scientists and engineers from across the country are teaming up to build a new type of climate model that is designed to provide more precise and actionable predictions.
The Earth Machine: Science Insurgents Plot a Climate Model Driven by Artificial Intelligence
Later this summer, an academic consortium … will launch an ambitious project to create a new climate model. Taking advantage of breakthroughs in artificial intelligence (AI), satellite imaging, and high-resolution simulation, that as-yet-unnamed model—the Earth Machine is one candidate—aims to change how climate models render small-scale phenomena such as sea ice and cloud formation that have long bedeviled efforts to forecast climate.
Next-Generation Climate Models Could Learn, Improve on the Fly
Even today’s most sophisticated Earth system models suffer from uncertainties that stem from the difficulty of simulating small-scale or complex processes, such as raindrop formation and carbon uptake by plants. Novel computational tools may hold the potential to address these uncertainties. In a new paper, Schneider et al. outline a blueprint for a next-generation climate model that would employ advancements in data assimilation and machine learning techniques to learn continuously from real-world observations and high-resolution simulations.
A Model Revolution
While considerable progress has been made in our understanding of the climate system, projections of the future remain highly uncertain. Such relatively low confidence stems, in part, from uncertainties in the parameterization schemes of Earth system models (ESMs)—approximations of unresolved small-scale processes—including, for example, cloud dynamics. Tapio Schneider and colleagues from the California Institute of Technology, USA, envision a revolution in Earth system modelling using data assimilation and machine learning to improve parameterization schemes.