Mission Statement
Dew-Point Anchor Hypothesis (DPAH) Community
The Dew-Point Anchor Hypothesis rests on a fundamental reversal of the conventional modelling hierarchy in climate and planetary science.
The prevailing radiative paradigm begins with a vacuum surface as the a priori — a hypothetical airless body whose effective temperature (Teff) is calculated from absorbed solar radiation alone. An atmosphere is then added as a secondary modifying layer. This vacuum-first approach defines the logical structure, independent variables, and direction of reasoning used in mainstream models.
In direct contrast, the Dew-Point Anchor Hypothesis begins with the atmosphere itself as the a priori reality — a physically complete, massive, and thermodynamically active system that exists from the outset. Within this atmosphere-first framework, the primary boundary condition is the observable phase-equilibrium altitude where a condensable volatile reaches saturation: the Lifting Condensation Level (LCL) for water vapour on Earth, or its frost-point or cloud-base equivalent on other planets. This anchor height (not the dew-point temperature itself) is fixed by Clausius–Clapeyron physics and is directly measurable.
From this LCL thermodynamic anchor, surface temperature, surface pressure, and the vertical thermal profile emerge as dependent variables, determined downward via the adiabatic lapse rate under hydrostatic equilibrium. Radiative processes operate within this anchored structure rather than defining the baseline itself.
By treating the atmosphere as the foundational reality rather than an add-on to a fictional vacuum state, DPAH eliminates the circular reasoning inherent in Teff-based models and restores physical primacy to thermodynamics, mass, composition, and phase behaviour.
This foundational distinction — atmosphere-first versus vacuum-surface-first — is the central commitment of the DPAH community.
Our mission is to develop, test, and refine this inverse, observation-driven modelling framework through open, transparent, and citable research. We welcome contributions that explore the implications of this conceptual shift for Earth’s climate, planetary atmospheres, and geoscientific modelling.
All records in this community are versioned, openly accessible under CC BY 4.0, and permanently archived on Zenodo.