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# Program information file
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PROGRAM_ID           2023A053
PROGRAM_TITLE        Time-dependent mapping of trace gases on Venus at several altitudes
PROGRAM_INV1         Eliot Young
PROGRAM_INV2         Mark Bullock
PROGRAM_INV3         Kandice-Lea Jessup
PROGRAM_INV4          
PROGRAM_INV5          
PROGRAM_SCICAT       major planets / satellites
PROGRAM_ABSTRACT_BEG
Several trace gases can be mapped from spectral image cubes of Venus's nightside. We propose to use iSHELL in selected CO2 spectral windows at 1.18, 1.74 and 2.25-2.5 um to map the distribution of trace gases [CO, OCS, H2O, SO2, HCl and HF] at different altitudes below the cloud base. There are several reasons to get these maps. The H2O and SO2 abundances are tests of models of cloud production and dissipation. The abundances of CO and OCS may be proxies for regions of upwelling and downwelling flows. The abundances of HF and HCl potentially constrain surface/atmosphere coupling by surface minerals and are also tracers of volcanic activity.
PROGRAM_ABSTRACT_END