Progress in Radio Occultation Observations of Earth Atmosphere from Spire's CubeSat Constellation

Vladimir Irisov1, Dallas S Masters1, Vu Nguyen1, Timothy Duly1, Robert Sikarin1, Oleguer Nogues-Correig2, Linus Tan3, Takayuki Yuasa3, Michael E. Gorbunov4 and Christian Rocken5, (1)Spire Global, Inc., Boulder, CO, United States, (2)Spire Global UK, Ltd, Glasgow, United Kingdom, (3)Spire Global Singapore, Pte. Ltd., Singapore, Singapore, (4)A.M.Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia, (5)GPS Solutions, Inc, Boulder, CO, United States