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Machine-learning model makes more accurate predictions about ocean currents

Computer scientists at MIT joined forces with oceanographers to develop a machine-learning model that incorporates knowledge from fluid dynamics to generate more accurate predictions about the velocities of ocean currents. This figure shows drifting buoy trajectories in the Gulf of Mexico superimposed on surface currents. The red dots mark the buoys’ positions on March 9, 2016, and the tails are 14 days long. Credit: Edward Ryan and Tamay Özgökmen from…

A Better Way To Study Ocean Currents

Computer scientists at MIT joined forces with oceanographers to develop a machine-learning model that incorporates knowledge from fluid dynamics to generate more accurate predictions about the velocities of ocean currents. This figure shows drifting buoy trajectories in the Gulf of Mexico superimposed on surface currents. The red dots mark the buoys’ positions on March 9, 2016, and the tails are 14 days long. Credit: Edward Ryan and Tamay Özgökmen from the University of MiamiA new machine-learning model makes more…

Today’s ocean models can only simulate less than 5% of the currents at 1,000-meter depth

Multivariate K-means clustering analysis results for 4 clusters. a The clustering map shows spatial distribution, and (b) the column chart summarizes normalized indicators of displacement disparity for each cluster. c The separate clustering maps show the spatial distribution of each cluster. The clustering indicators are DOD (Difference of direction), DOV (Difference of velocity), SD (Separation distance) and SS (Skill score). Credit: Nature…

Deluges of Antarctic Meltwater Threaten to Collapse The Oceans’ Circulation Currents : ScienceAlert

Off the coast of Antarctica, trillions of tons of cold salty water sink to great depths. As the water sinks, it drives the deepest flows of the "overturning" circulation – a network of strong currents spanning the world's oceans.The overturning circulation carries heat, carbon, oxygen, and nutrients around the globe, and fundamentally influences climate, sea level, and the productivity of marine ecosystems.But there are worrying signs these currents are slowing down. They may even collapse.If this happens, it would…

Scientists warn deep ocean currents near Antarctica are collapsing, here’s what it mean for humans

The deep ocean circulation that occurs around Antarctica is in danger of disintegrating, according to scientists. If this kind of ocean circulation were to drastically decrease, it would have far-reaching consequences for climate and marine ecosystems. Scientia Professor Matthew England, Deputy Director of the ARC Centre of Excellence in Antarctic Science (ACEAS) at UNSW Sydney, oversaw the research and compiled the report detailing the findings. Authors from the Australian National University (ANU) and the…

West Antarctica ice sheet collapse may stabilize North Atlantic currents

A brief overview of the findings. Credit: TiPES/HP It has been hypothesized, that the tipping of one element of the Earth's system can catalyze the tipping of others in a cascade. A study gives an example of an alternative option, in which the collapse of one component might in fact make another system tipping less likely. In particular, the study indicates that tipping of the West Antarctica ice sheet may stabilize the…

Experts explain slowing ocean currents

Satellite image of the Earth displaying the Atlantic Meridional Overturning Circulation. Credit: Atlantic Oceanographic and Meteorological Laboratory For decades, oceanographers have been measuring the Atlantic Meridional Overturning Circulation (AMOC), a large system of ocean currents that greatly influence Earth's climate. In recent years, the data show it is weakening. But what does this mean?…

When winds and currents align, ocean mixing goes deep

A mooring float used in the Overturning in the Subpolar North Atlantic Program sits aboard R/V Neil Armstrong during a cruise in the Irminger Sea in August 2020. Credit: Isabela Le Bras When warm, salty subtropical waters flow into the chilly North Atlantic, they cool, sink, and become the oxygen- and carbon-rich waters of the deep ocean. This convection is an important part of the global climate system, helping sequester carbon…