Fig. 18.

Simulated comparison of Jupiter 5-μm spectra from Juno/JIRAM (blue) and JUICE/MAJIS (orange), based on thermal emission calculations by Grassi et al. (2010). This shows the higher spectral resolution of MAJIS (9.2-10.5 nm) compared to JIRAM (15 nm) in this spectral range, and reveals the longward extension of MAJIS to 5.56 μm. The 5-μm ‘window’ is sculpted by PH₃ absorption on the short-wave side (near 4.3 μm) and NH₃ absorption on the long-wave side (near 5.3 μm), with numerous contributions from minor species (AsH₃, CO, GeH₄, CH₃D and H₂O) as described in the main text