Global Warming Creates Demand For Greenhouse Gas Sniffers: Technology to Pinpoint Source of Emissions
A growing number of firms such as Picarro, a California based firm, are filling the niche. Picarro is on the cutting edge in manufacturing real time greenhouse gas sampling analyzers for researchers, governments, and industry. These analyzers are able to continuously measure concentrations of atmospheric gases and, coupled with GPS technology, produce detailed contour maps showing where greenhouse gases are produced.
The analyzers work by measuring the absorption of laser light at particular frequencies. As each greenhouse gas has its own absorption frequency, by determining the amount of absorption at a particular frequency, both the gas composition and concentration can be determined. In this way, baseline emissions can be determined and in the future, when greenhouse gases are regulated, industry can be equitably rewarded for compliance or properly punished for violations.
via NY Times