Atmospheric Chemistry and Physics, Vol 21, Pp 16645-16659 (2021) Pumphrey, H, Schwartz, M, Santee, M L, Kablick, G, Fromm, M & Livesey, N J 2021, ' Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017 ', Atmospheric Chemistry and Physics Discussions . https://doi.org/10.5194/acp-21-16645-2021