  Rocky exoplanets orbiting in the habitable zone (HZ) of nearby M dwarfs
provide unique opportunities for characterizing their atmospheres and searching
for biosignature gases. TRAPPIST-1e, a temperate Earth-sized exoplanet in the
HZ of a nearby M dwarf, is arguably the most favorable target for ground- and
space-based atmospheric characterization by the extremely large telescopes
(ELTs) and the James Webb Space Telescope (JWST). To inform future observations
in reflected and emitted lights using these upcoming telescopes, we simulate
the high-resolution reflection and emission spectra for TRAPPIST-1e for both
modern and prebiotic Earth-like atmospheric compositions. To demonstrate the
effects of wavelength-dependent albedo on climate and spectra, we further
simulate five albedo scenarios for each atmospheric composition: cloudy modern
Earth-like, cloud-free modern Earth-like, cloudy ocean planet, 100 per cent
cloudy planet, and wavelength-independent albedo of 0.31. We use the recent
Mega-MUSCLES spectral energy distribution (SED) of TRAPPIST-1 for our models.
We show that the O$_2$ + CH$_4$ and O$_3$ + CH$_4$ biosignature pairs as well
as climate indicators (CO$_2$ and H$_2$O) show features in both high-resolution
reflection and emission spectra of TRAPPIST-1e that the ELTs can search for.
Our high-resolution database for modern and prebiotic Earth TRAPPIST-1e models
with various surface compositions and cloud distributions provides a tool for
observers to train retrieval algorithms and plan observation strategies to
characterize this potentially habitable world.

Earth and Planetary Astrophysics