All Announcements

The US CLIVAR Micro2Macro: Origins of Climate Change Uncertainty workshop report discusses a roadmap, Bayesian Inference Frameworks for the Earth System (BIFES), to confront and evaluate climate models using observations to improve our process-based understanding and strategically reduce climate change projection uncertainty.

Joshi and Zhang (2025) demonstrate that southward advection of upper extratropical-tropical North Atlantic signals by the North Atlantic subtropical gyre plays a central role in forming the characteristic cold SST horseshoe pattern.

Kessenich et al. (2025) analyzes projected changes in CONUS fire weather and compares the responses of multiple fire indices using 13 dynamically downscaled regional climate models from North America CORDEX for the historical reference (1980–2010), mid-century (2030–2060), and end-of-century (2069–2099) periods.

Using a local energetics framework, Brizuela et al. (2025) find that 20-50% of equatorial Pacific upwelling is not driven by local winds but by potential energy stored in the tropical thermocline.

Kamnani et al. (2025) present the first systematic global assessment of how consistently different regions exhibit a dominant atmospheric river (AR) season, tracking how often regional peaks repeat across regions and detection methods.

The 2025 US CLIVAR Summit, held in Boulder this past July, included three plenary sessions and 13 breakouts on a range of pressing climate variability and change science topics. The report is now available.