The researchers compared ocean-temperature data collected in the 1870s by the Challenger vessel with modern data collected by the Argo project, which uses 3,500 free-drifting floats (one of which is shown here) to measure temperature and salinity. CREDIT: Argo Project
Oceans Started Warming 135 Years Ago, Study Suggests -- Live Science
The world's oceans have been warming for more than 100 years, twice as long as previously believed, new research suggests.
The findings could help scientists better understand the Earth's record of sea-level rise, which is partly due to the expansion of water that happens as it heats up, researchers added.
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