All Announcements

Hosted by the US CLIVAR Working Group on Accelerating Research on the Scientific Foundations of Regional Climate Risk Information, this webinar series explores the growing demand for actionable information on climate hazards and risks.

Chen et al. (2025) employs large-eddy simulations to demonstrate how small-scale SST variations can increase trade cumulus cloud formation. The authors argue that locally enhanced convective updrafts lead to an increase in cloudiness near the cloud base, which occurs downwind of the maximum SST warm anomaly as the SST anomaly gets sharper. Their results suggest that improving model parameterizations could reduce uncertainty in climate models by better capturing how subcloud turbulent mixing, convective mass flux, and cloud-base cloudiness respond to small-scale SST anomalies in the tropical oceans.

The 2025 US CLIVAR Summit, held in Boulder this past July, featured three plenary sessions and thirteen breakout sessions covering a wide range of pressing climate variability and change topics. Presentations from the sessions are available on the Summit agenda.

The 2026 Ocean Sciences Meeting will take place February 22-27 in Glasgow, Scotland. Contribute to "Creating a Current of Community" by submitting an abstract by August 20.

The 2025 Fall AGU meeting will take place December 15-19, 2025, in New Orleans, LA. The theme, "Where Science Connects Us," will explore and celebrate the connections shaping the broader Earth science community. Abstract submissions are due Wednesday, July 30.

The 106th Annual Meeting of the American Meteorological Society will take place January 25-29, 2026 in Houston, Texas, and online. Featuring sessions on the history, accuracy, and evolution of conceptual models, the theme, "Fast and slow thinking: The human factor in a rapidly changing world," will explore the role of human decision-making in advancing public safety, economic prosperity, and sustainability. Abstract submission deadlines vary by session, with many having a deadline of August 14, 2025.

Published in Journal of Climate, Karnauskas (2025) re-examined a collection of historical estimates made since 1961, as well as drifters and other modern observations and state estimates, to provide new constraints on this key variable.