The climates and thermal emission spectra of prime nearby temperate rocky exoplanet targets

Article Overview: In this work, we predict the efficacy of future observations using the Planetary Infrared Excess technique by potential future observatories such as the MIRECLE mission concept. To do so 21 GCM simulations with ExoCAM, consisting of 7 habitable zone exoplanets each with 3 atmopheric composition cases, post-processed in PSG to calcuate thermal emission spectra. We find that all cases have distinguishable carbon dioxide and water features assuming a 90 degree orbital inclination. We predict that carbon dioxide is potentially detectable at 15 μm with MIRECLE for at least four nearby known exoplanets: Proxima Cenaturi b, GJ 1061 d, GJ 1002 b, and Teegarden's Star c. Our ExoCAM GCMs and PSG post-processing demonstrate the potential to observationally characterize nearby non-transiting rocky planets and better constrain the potential for habitability in our Solar neighborhood. Data overview: The following data is required for each figure exocam_output.zip: Figures 1-8 The files in solar_files and spectral_output are required for Figure 7 (thermal phase curves) spectra_noise.zip: Figures 8, 9, 11, 13 cloudy_runs: "default" psg runs that include all information from the exocam outputs shown in Figure 8 no_clouds: psg runs calculated without cloud aerosols and cloud scattering physics shown in Figure 9 no_co2: psg runs calculated without carbon dioxide in the amosphere. These are used to compute SNR in Figure 11 noise_files: default run noise output varying telescope diameter and exposure time. Used to create Figure 13. phase_data.zip: Figures 10, 12 uses the same naming conventions as in the previous folder. The python scripts used to run PSG data are also included