28 Feb '12, 6pm

Drive-by Technology Measures Exact CO2 Emissions with Infrared Sensors

Drive-by Technology Measures Exact CO2 Emissions with Infrared Sensors

Livestream /Video screen capture . Measuring CO2 emissions in Boston. Carbon emissions are hard to measure, especially on large scales. So when figures are given for how much CO2 a particular city, country or event pumps into the air, chances are they come from a calculation- an estimate- not an actual measurement. But a new technology from Picarro is making real numbers available by using infrared sensors operating out of a moving vehicle. As Google did for Street View, Picarro drives around places with hugely expensive equipment in the back of a truck. Gas-phase molecules, like CO2, have "unique near-infrared absorption spectrums " - wavelengths that can be detected accurately and in real time to produce "hyper-visual, three-dimensional maps" of carbon emissions. Here, CEO Michael Woelk explains how it works: To implement the technology, Picarro launched the City Carbon ...

Full article: http://www.treehugger.com/clean-technology/drive-technolo...

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