The effect of lightning on the atmospheric chemistry of exoplanets and potential biosignatures

Open Access

Fig. 13

Simulated spectra for the planet orbiting the Sun: Anoxic, biotic scenario without CO deposition (CO flux ~10⁹ molecules cm⁻² s⁻¹). Spectra with individual species removed are shown (without C₂H₆ in red, and without CH₄ in orange) in comparison to the full spectrum (black dotted line).

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