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Century-Old Science Helps Confirm Global Warming


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HMS Challenger survey vessel

Drawing of the HMS Challenger survey vessel preparing to measure ocean temperatures by lowering thermometers deep into the ocean on ropes in 1872. A new NASA and University of Tasmania study combined the ship's 135-plus-year-old measurements of ocean temperatures with modern observations to get a picture of how the world's ocean has changed since the Challenger's voyage. The research reveals that warming of Earth can be clearly detected since 1873, with the ocean absorbing the majority of the heat.

Credit: NOAA

A new NASA and university analysis of ocean data collected more than 135 years ago by the crew of the HMS Challenger oceanographic expedition provides further confirmation that human activities have warmed our planet over the past century.

From Jet Propulsion Laboratory/NASA
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