Answers are grounded in this paper and cite their sources.
Raman backscatter of a frequency-doubled ruby laser beam by water vapor has been observed in the atmosphere, using an optical radar system. This return along with a Raman nitrogen return, has been used to calculate a relative water-vapor mixing ratio profile in the atmosphere to an altitude of approximately 2 km.
No takes yet. Share an insight, caveat, or question.
Melfi et al. (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: