# # Program information file # PROGRAM_ID 2023B049 PROGRAM_TITLE Mid-Infrared Measurements of Unusual Atmospheric Processes in Jupiter During Juno Perijoves 55 and 57 PROGRAM_INV1 Glenn Orton PROGRAM_INV2 Arrate Antunano PROGRAM_INV3 Leigh Fletcher PROGRAM_INV4 Thomas Greathouse PROGRAM_INV5 Rohini Giles PROGRAM_SCICAT major planets / satellites PROGRAM_ABSTRACT_BEG We propose to take advantage of a rare opportunity to determine the structure and composition of Jupiter's atmosphere over a broad vertical range using contemporaneous observations by the Juno spacecraft and TEXES. We request time near the close approaches ['perijoves', or 'PJs'] for PJ55 and PJ57 this semester. The TEXES observations will cover a spectral range missing from Juno's instrument complement, providing valuable boundary conditions on temperature and composition in the upper troposphere and stratosphere. A major goal is to understand the 3-dimensional nature of planetary-scale evolution in Jupiter's axisymmetric regions, which have undergone major changes in visible appearance and cloud opacity. The combination of TEXES and Juno Microwave Radiometer [MWR] measurements are capable of determining the evolution of atmospheric properties over an unprecedented vertical range, which will test a theory in which such changes are due to the release of convective available potential energy [CAPE] involving latent heating by water condensation. In addition, we will examine the changing dynamics of Jupiter's Great Red Spot, which continues to shrink longitudinally and undergo disturbances to its visible appearance. We will also examine equatorial stratospheric temperature oscillations to assess the importance of waves in transmitting energy from the troposphere to the stratosphere. PROGRAM_ABSTRACT_END