With long ranges and adaptive capabilites, saildrones provide researchers with a new tool in their toolbox for collecting data in remote and hard to reach parts of the ocean.
Climate experts are keeping their eyes on the tropical Pacific, watching a strip of cool water that may be one indicator that La Niña is brewing.
With El Niño in the rearview mirror, the central tropical Pacific continued to cool in June 2016.
Compared to March, parts of the tropical Pacific showed signs of cooling off in April 2016.