Circulation

Lead author Dr. Adriana Dutkiewicz from the EarthByte Group in the School of Geosciences at the University of Sydney. Credit: The University of Sydney Scientists from the Universities of Sydney and Sorbonne University have used the geological record of the deep sea to discover a connection between the orbits of Earth and Mars, past global warming patterns and the speeding up of deep ocean circulation.…

One parcel of water will take about 1,000 years to travel the full length of the AMOC. Credit: Sara Levine | Pacific Northwest National Laboratory Since the Atlantic Meridional Overturning Circulation (AMOC) was first monitored in 2004, it has been the focus of thousands of scientific papers and even a blockbuster movie that grossed more than $552 million worldwide. …

Paleogeographic reconstructions through the Cenozoic (last 66 million years) and cross sections of mantle density anomalies. Upper line in each right panel shows dynamic topography, while triangles indicate the change relative to previous time step and therefore shows uplift and subsidence. Black arrows show mantle velocities while the main blue zone represents subduction underneath the Tethys Sea and orange is uplift under Eurasia. Credit: Straume et…

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research.Superstorms, abrupt climate shifts and New York City frozen in ice. That’s how the blockbuster Hollywood movie “The Day After Tomorrow” depicted an abrupt shutdown of the Atlantic Ocean’s circulation and the catastrophic consequences.While Hollywood’s vision was over the top, the 2004 movie raised a serious question: If global warming shuts down the Atlantic Meridional Overturning Circulation, which…

The White House called the circulation of explicit images generated by artificial intelligence (AI) of pop superstar Taylor Swift “alarming” as critics cite the incident as the latest example of the growing risks of deepfakes. “We are alarmed by the reports of the circulation of the … false images,” press secretary Karine Jean-Pierre told reporters Friday. “While social media companies make their own independent decisions about content management, we believe they have an important role to play in enforcing…

Seasonal changes in subtropical circulation under greenhouse warming. a, b Changes in the 850 hPa streamfunction (shading) in the Shared Socioeconomic Pathway 5-8.5 (SSP5-8.5) experiment relative to the historical experiment during a the boreal winter (December–February; DJF) and b the boreal summer (June–August; JJA). The contours in a and b represent the climatology of the 850 hPa streamfunction in the historical experiment (interval: 5 × 106 m2 s−1).…

Cross-plot of planktic MCA-LIA change point versus site latitude. Earlier LIA cooling at planktic records may imply earlier cooling at the northern than southern sites. Credit: Science (2023). DOI: 10.1126/science.adf1646 Heat transferring from the surface to the deep ocean in the North Atlantic helped reduce climate swings during the last 1,000 years, according to a newly published paper led by researchers from the Woods Hole…

A major ocean current system in the Atlantic could be about to collapse as soon as 2025, concerning new peer-reviewed research suggests.This is particularly concerning in light of the current heat extremes we're witnessing across the globe, including a massive departure from previous records in the Atlantic Ocean itself."Here we calculate when the early warning signs are significantly above the natural variations," write physicist Peter Ditlevsen and statistician Susanne Ditlevsen from the University of Copenhagen."Given…

Credit: Unsplash/CC0 Public Domain The Philippine Sea (PS) is one of the regions with the strongest interannual variability in sea level and upper-layer circulation. During the developing stage of El Niño events, the Philippine Sea shows sea level falling and cyclonic circulation anomaly. However, El Niño is complex, causing diverse Philippine Sea responses across individual events. …

Credit: CC0 Public Domain A research team from the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences has examined the performance of eight prominent reanalysis datasets in capturing regional Hadley Circulation (HC) responses to El Niño–Southern Oscillation (ENSO) events. The researchers found that while they…