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Century-Old Science Helps Confirm Global Warming

By Guest PostMay 25, 2013Environmentanthropogenic, argo array, australia, century old science, challengers voyage, global scientific survey, global warming, greenhouse gases, hms challenger, human activities, josh willis, life beneath, NASA, natural variation, ocean data, ocean profiling floats, ocean surface, oceanographic expedition, sandy bay, sea water, sea-level rise, temperature, thermal expansion, university analysis, university of tasmania, will hobbs

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.

Researchers from the University of Tasmania, Sandy Bay, Australia; and NASA’s Jet Propulsion Laboratory, Pasadena, Calif., combined the ship’s measurements of ocean temperatures with modern observations from the international Argo array of ocean profiling floats. They used both as inputs to state-of-the-art climate models, to get a picture of how the world’s oceans have changed since the Challenger’s voyage. (more…)

Ocean Acidification Changes Nitrogen Cycling in World Seas

*New results indicate potential to reduce certain greenhouse gas emissions from oceans to atmosphere*

Increasing acidity in the sea’s waters may fundamentally change how nitrogen is cycled in them, say marine scientists who published their findings in this week’s issue of the journal Proceedings of the National Academy of Sciences (PNAS).

Nitrogen is one of the most important nutrients in the oceans. All organisms, from tiny microbes to blue whales, use nitrogen to make proteins and other important compounds. (more…)

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Century-Old Science Helps Confirm Global Warming

Ocean Acidification Changes Nitrogen Cycling in World Seas