Lecture Observation of 27-day solar cycles in the production and mesospheric descent of EPP-produced NO. Hendrickx, K.; Megner, L.; Gumbel, J.; Siskind, D.E.; Orsolini, Y.J.; Nesse Tyssøy, H.; Hervig, M. Publication details Presented at Atmospheric Limb Workshop, Göteborg, September 17, 2015.