**Aaron Boone**

The ASP (Atmosphere-Surface forecast Prediction) model is a hybrid-coordinate hydrostatic primitive equation limited-area model (LAM). It is intended for short to medium range numerical weather prediction (NWP). It has been developed to explore issues related to interactions between the surface and the atmosphere.The model is more simple and uses slightly more coarse vertical and horizontal resolutions than operational hydrostatic forecast models (although it is comparable to some such models)... but it has baseline physics and a solid dynamical core with state of the art numerical schemes and thus can produce reasonable forecasts, which are often on-par with operational models for gross synoptic scale features for forecasts out to several days. It is under continuous development.

Disclaimer: Please note that this page has nothing to do with my employer, CNRS, or where I am employed, at the National Center for Meteorological Research (Centre National de Recherches Meteorologiques: CNRM) at Meteo-France. The opinions expressed herein are my own, and are not a reflection of those where I work or of my employer.

- Contents
- Background
- Dynamic Core
- Governing Equations
- Diffusion and filters
- Lateral Boundary Conditions
- Horizontal discretization
- Vertical discretization
- Temporal discretization
- Map Factors
- Curvature terms
- Global grid

- Physics
- Convection
- Convective tendencies
- Cloud Model Equations
- Convective tendencies: updrafts and downdrafts
- Convective Plumes
- Cloud Base determination
- Cloud Properties
- Updraft Entrainment and Detrainment rates
- Downdraft Entrainment and Detrainment rates
- Cloud updraft normalized mass flux profile
- Shallow convective mass flux
- Deep convective mass flux
- Forced deep convective mass flux
- Total convective mass flux
- Microphysics: source terms
- Numerics
- Examples

- Large Scale Precipitation and Microphysics
- Gravity Wave Absorbing Layer
- Turbulence
- Radiation
- Land Surface
- Water Surface
- Frozen Water Surface

- Convection
- Initialization

- Diagnostics

- Bibliography
- About this document ...