Current applications include detecting leaks from oil and gas installations as well as measuring emissions from livestock.

View as a Web Page NIST Laser 'Comb' Systems Now Measure All Primary Greenhouse Gases in the Air Researchers at the National Institute of Standards and Technology (NIST) have upgraded their laser frequency-comb instrument to simultaneously measure three airborne greenhouse gases — nitrous oxide, carbon dioxide and water vapor — plus the major air pollutants ozone and carbon monoxide. Combined with an earlier version of the system that measures methane, NIST's dual comb technology can now sense all four primary greenhouse gases, which could help in understanding and monitoring emissions of these heat-trapping gases implicated in climate change. The newest comb system can also help assess urban air quality. Read More IN CASE YOU MISSED IT NIST 'Agricomb' Measures Multiple Gas Emissions From … Cows March 31, 2021 After the optical frequency comb made its debut as a ruler for light, spinoffs followed, including the astrocomb to measure starlight and a radar-like comb system to detect natural gas leaks. And now, researchers have unveiled the "agricomb" to measure, ahem, cow burps. Read More

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