5 Key Takeaways

• 1

  A vehicle-mounted dual-comb spectroscopy system can measure methane in real time while traveling at speeds up to 100 km/h.

• 2

  The system detected controlled natural gas releases and mapped methane plume distributions during tests in Shanghai.

• 3

  Dual-comb spectroscopy provides high-resolution molecular spectra and is well-suited for trace-gas analysis in the mid-infrared region.

• 4

  The instrument achieved precisions of 66 ppb for methane and 114 ppm for water vapor during separate campus measurements.

• 5

  Future plans include expanding spectral coverage, improving stability, automating data analysis, and potential drone deployment.