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Physical scientist Steve Ryan examines real-time carbon dioxide measurements on a laptop connected to the modern non-dispersive infrared (NDIR) analyzer at Mauna Loa Observatory, where the world's longest continuous climate record continues today. This sophisticated digital system, far evolved from the original mechanical recorder Charles David Keeling installed in 1958, maintains the exacting measurement standards established decades ago—delivering Earth's annual "report card" that now shows atmospheric CO₂ concentrations surpassing 400 parts per million, a threshold unseen on our planet for millions of years.
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Jonathan Kingston
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Mauna Loa Observatory: Monitoring Earth's Climate Pulse
Physical scientist Steve Ryan examines real-time carbon dioxide measurements on a laptop connected to the modern non-dispersive infrared (NDIR) analyzer at Mauna Loa Observatory, where the world's longest continuous climate record continues today. This sophisticated digital system, far evolved from the original mechanical recorder Charles David Keeling installed in 1958, maintains the exacting measurement standards established decades ago—delivering Earth's annual "report card" that now shows atmospheric CO₂ concentrations surpassing 400 parts per million, a threshold unseen on our planet for millions of years.