US Climate Variability and Predictability Program

Research Highlights

US CLIVAR aims to feature the latest research results from the community of scientists participating in our interagency-sponsored projects, working groups, panels, science teams, and workshops. Check out the collection of research highlights below and sort by topic on the right. 

Climate extremes such as hurricanes and typhoons can cause death and destruction for communities around the world. Scientists are interested in studying both the predictability and possible future changes in the frequency and intensity of such storms.

Tropical cyclones are among the most devastating storms on Earth. Tropical cyclone activity in the North Atlantic displays large interannual variability in both number and track density. Recent studies show that global high-resolution models have remarkable skill in simulating the interannual variability in cyclone counts, implicating strong control by sea surface temperatures patterns.

To understand the increased number of cold extreme events in recent years, a study conducted by an international team of US and Korean scientists suggests that the recently drastic reduction of Arctic sea ice cover could be the key driver.

Researchers investigated the response of Atlantic Meridional Overturning Circulation (AMOC) to the rise of atmospheric CO2 in the NCAR Climate System Model version 3, with the focus on the different responses under modern and glacial periods.

Global warming seems to have slowed over the past 15 years while the deep ocean has been observed in absorbing the heat instead. New research has found that transport of heat to the deep layers in the Atlantic and Southern Oceans could be one of the likely scenarios to the slowdown in global warming.