MERCURY: A Fast and Versatile Multi‐Resolution Based Global Emulator of Compound Climate Hazards

Journal article

Plain Language Summary: Climate model emulators are approximations of climate models that provide a quick and low‐cost alternative to exploring future climate scenarios. Traditional emulators generate large amounts of data covering the whole world, which still need to be condensed when exploring local and regional impacts. In this paper, we propose a new emulator based off image compression techniques. The setup allows one to “zoom” in and out from global to regional to local levels, providing user‐relevant information across scales. It furthermore conserves both large‐scale and local features and can be run in minutes. Given its versatile framework, the approach is easily extendable to new variables, and in this paper we demonstrate its ability to jointly capture temperature and relative humidity.

Authors: Nath, S; Carreau, J; Kornhuber, K; Pfleiderer, P; Schleussner, C

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Wiley
• Journal: Journal of Advances in Modeling Earth Systems
• Volume: 17
• Issue: 11
• Article number: e2024MS004905
• Publication date: 2025-11-08
• Acceptance date: 2025-10-10
• DOI: 10.1029/2024ms004905
• EISSN: 1942-2466
• ISSN: 1942-2466
• Language: English
• Keywords: compound events; climate models; image compression; emulator; wavelets