> "The retrieval of methane from space measurements typically relies on spectrally-resolved measurements of solar radiation reflected by the Earth's surface in the shortwave infrared (SWIR) part of the spectrum (~1600–2500 nm). Methane presents two absorption bands in this region, a weaker one around 1700 nm and a stronger one around 2300 nm. Carbon dioxide, nitrous oxide and especially water vapor also present optical activity in the SWIR (see Fig. 1)"
"Mapping methane point emissions with the PRISMA spaceborne imaging spectrometer" (2021)
https://www.sciencedirect.com/science/article/abs/pii/S00344...
> "The retrieval of methane from space measurements typically relies on spectrally-resolved measurements of solar radiation reflected by the Earth's surface in the shortwave infrared (SWIR) part of the spectrum (~1600–2500 nm). Methane presents two absorption bands in this region, a weaker one around 1700 nm and a stronger one around 2300 nm. Carbon dioxide, nitrous oxide and especially water vapor also present optical activity in the SWIR (see Fig. 1)"