Climate change may be speeding up ocean circulation
Since the 1990s, wind speeds have picked up, making surface waters swirl faster
![Deploying float to collect ocean data](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/02/020420_cg_faster-circulation_feat.jpg?fit=1028%2C579&ssl=1)
Argo floats, such as this one being deployed in the Southern Ocean, measure water temperature, salinity and current speeds. Data from such floats suggest that ocean circulation has sped up.
SOCCOM Project/Cara Nissen/Flickr (CC BY 2.0)