Scientist measures the carbon dioxide level in air

Scientist measures the carbon dioxide level in air

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Caption: Air analysis. Scientist notes the level of carbon dioxide gas in a sample of air using a non-dispersive infrared gas analyser (at upper right). Carbon dioxide is a "greenhouse gas" that traps heat in the atmosphere, and which could change the world's climate. Each hour this equipment compares the concentration of atmospher- ic carbon dioxide to those in reference gases for calibration purposes. Before analysis, the gas is dried by a dryer (at lower left) which contains alcohol at -60 degrees celsius. Photographed at the Cape Grim Baseline Air Pollution Station in Tasmania, Australia.

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Keywords: air, air analysis, air pollution monitoring, analysis, atmosphere, atmospheric research, cape grim, carbon dioxide, climate, climate research, co2 content, gas, greenhouse gas, infrared analysis

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