Published on December 2nd, 2015 | by Glenn Meyers15
Advanced Infrared Camera Can Photograph Methane
December 2nd, 2015 by Glenn Meyers
A new camera has eliminated the guesswork about where greenhouse gases are being emitted. It can photograph and film methane.
This technology has been released by a team of researchers from Linköping and Stockholm Universities who have demonstrated how this remarkably advanced camera can record methane in the air around us.
Importantly, this technological advance can play an important role in global efforts to measure and monitor greenhouse gases.
According to a press announcement, the camera has been developed by a team that combined knowledge from many different fields of expertise, including astronomy, biogeochemistry, engineering and environmental sciences.
“This gives us new possibilities for mapping and monitoring methane sources and sinks, and it will help us understand how methane emissions are regulated and how we can reduce emissions,” said David Bastviken, Linköping University professor at Tema Environmental Change, and principal project investigator. “So far the camera has been used from the ground and now we’re working to make it airborne for more large-scale methane mapping,”
So much for the dubious notion, “If you can’t see it, it’s not there.” Now it will be visible for all to see.
The news release reports several questions surround the powerful greenhouse gas methane, including its rapid but irregular increase in the atmosphere. There is also considerable uncertainty regarding methane sources and sinks in the landscape.
The new camera may help address these issues. The utility of the camera to both photograph and film methane has been demonstrated in a study that was recently published in Nature Climate Change.
“The camera is very sensitive, which means that the methane is both visible and measurable close to ground level, with much higher resolution,” said Magnus Gålfalk, Assistant Professor at Tema Environmental Change, Linköping University, who led the study.
The hyperspectral infrared camera weighs 35 kilos and measures 50 x 45 x 25 centimeters. It is optimized to measure the same radiation that methane absorbs, and which makes methane such a powerful greenhouse gas.
The camera can be used to measure emissions from many environments including sewage sludge deposits, combustion processes, animal husbandry, and lakes. For each pixel in the image the camera records a high-resolution spectrum, which makes it possible to quantify the methane separately from the other gases.
Longstanding complaints of methane leaks from natural gas production and distribution can also be recorded. It will be very interesting to report on the results.
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