# # Program information file # PROGRAM_ID 2021A063 PROGRAM_TITLE IRTF-TEXES spectroscopy of Jupiter's mid-to-high latitudes: support for the Juno missio PROGRAM_INV1 James Sinclair PROGRAM_INV2 Thomas Greathouse PROGRAM_INV3 Rohini Giles PROGRAM_INV4 Arrate Antunano PROGRAM_INV5 Glenn Orton PROGRAM_SCICAT solar system PROGRAM_ABSTRACT_BEG We propose to perform high-resolution [60000 < R < 85000] TEXES measurements of H2 S[1], CH3, CH4, C2H2, C2H4 and C2H6 emission of Jupiter's mid-to-high latitudes near-contemporaneously with Juno's 34th flyby or perijove. The observations will be inverted in order to provide constraints on the altitude of the CH4 homopause and its spatial variation as well as the vertical profiles of temperature, C2H2, C2H4 and C2H6. The derived altitude of the CH4 homopause in and around Jupiter's auroral zones will offer a unique constraint for the analyses and interpretation of Juno's ultraviolet data for which the CH4 homopause altitude is a large source of uncertainty. The derived temperatures and hydrocarbon abundances will be compared with previous results derived from TEXES measurements between 2014 and 2019 to more fully understand the evolution of the polar stratosphere and its coupling with the external magnetosphere. PROGRAM_ABSTRACT_END