Next-Generation Atmosphere Models for Giant Planets with Interpolator for Spectral Evolution: Cloudless Models

This dataset provides a grid of cloudless, isolated atmosphere models for giant planets, designed to serve as boundary conditions for interior and evolutionary calculations. The tables span a 4D parameter space in effective temperature, surface gravity, helium fraction, and metallicity. Data include temperature–pressure profiles, entropy at the radiative–convective boundary, and emergent spectra .

A key feature of this release is the consistent treatment of both helium abundance (Y) and metallicity (Z), enabling applications to problems involving helium rain, composition gradients, and time-dependent atmospheric evolution. The dataset is accompanied by a lightweight Python interpolation toolkit that allows users to efficiently generate spectra and boundary conditions at arbitrary points or along evolutionary tracks in the 4D parameter space .

These data are intended for use in modeling the thermal and spectral evolution of gas giants, as well as for forward-modeling observables such as spectra, colors, and light curves. For detailed documentation, data structure, and usage examples, please refer to the accompanying README.