segunda-feira, 2 de abril de 2012

New comparison of ocean temperatures reveals rise over the last century

Argo's 3,500 ocean-profiling robots blanket the world's oceans. 
(Credit: Image courtesy of Scripps Institute of Oceanography)

ScienceDaily (Apr. 1, 2012) — A new study contrasting ocean temperature readings of the 1870s with temperatures of the modern seas reveals an upward trend of global ocean warming spanning at least 100 years.
The research led by Scripps Institution of Oceanography at UC San Diego physical oceanographer Dean Roemmich shows a .33-degree Celsius (.59-degree Fahrenheit) average increase in the upper portions of the ocean to 700 meters (2,300 feet) depth. The increase was largest at the ocean surface, .59-degree Celsius (1.1-degree Fahrenheit), decreasing to .12-degree Celsius (.22-degree Fahrenheit) at 900 meters (2,950 feet) depth