(Proposal ID) S16B-025

(PI) Kasaba, Yasumasa

(Proposal Title)
MIR studies of Jupiter around the closest approach of NASA Juno orbiter

(Abstract)
A new NASA Jovian orbiter, Juno, will start its full observation from Nov. 
2016 and transform our understanding of Jovian climatology and electromagnetic 
environment. Our proposal enhances its results by COMICS mid-infrared 
observation, a spectral range not covered by Juno. We request one run of two 
sequential half nights between 10-13 or 7-8 Jan 2017, during or close to 
Juno's closest approach (perijove) at 14 UT on 11 Jan. We will perform 
(1) N-band (7.8, 8.7, 10.3 mum) and Q-band (17.5, 18.65, 20.5, 24.5 mum) 
imaging and (2) NL (N-band low-resolution) spectroscopy. Tropospheric 
temperatures and the abundances of NH_3 gas and ice in upper troposphere 
will provide a spatial and temporal context and upper boundary conditions 
for the deep atmospheric observations by Juno's Microwave Radiometer (MWR). 
Stratospheric temperatures and abundances of C_2H_2 and C_2H_4, derived from 
7.8-mum CH_4 emission imaging and NL spectroscopy, will provide the 
modifications of polar stratosphere by auroral activities. This will 
complement with and enhance the vertical range of Juno's Jovian Infrared 
Aurora Mapper (JIRAM) and Ultraviolet Spectrometer (UVS).