The lidar equation for Raman backscattering by methanol molecules is numerically solved for probing of molecules in the atmosphere with concentrations in the range of 10(12)-10(18) cm(-3) at distances of up to 1000 m in the synchronous photon counting mode. It is shown that, using a Raman lidar with a laser wavelength of 405 nm, it is possible to detect methanol molecules with concentrations on the order of 10(16) cm(-3) at distances of up to 600 m for a measurement time of 1 s.
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