To date, there are two releases of Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) data bundles, produced during the LASSO pilot phase.
These releases are preliminary versions of the final product that will go into operation in 2017. The Alpha 1 and Alpha 2 bundles serve the purpose of demonstrating the overall LASSO concept to researchers, providing a means for facilitating community discussion and feedback, and making available initial sets of simulations and accompanying observations for research purposes.
Each release is a collection of data files, which entails a collection of what ARM calls “data bundles,” which consists of:
- LES input and outputs
- ARM observations co-registered on the model grid
- Model diagnostics and skill scores
- Data plots of various fields.
Simulations from the System for Atmospheric Modeling (SAM) and the Weather Research and Forecasting (WRF) model are available that have been driven using a range of forcings under consideration for use with LASSO. Many of the simulations are directly comparable, e.g., they use the same model configuration and only differ in the forcing or initial conditions used to drive the model.
Other simulations differ in aspects such as the particular choice of microphysics and grid configuration. The release also serves as an initial introduction to the skill scores being designed for model evaluation.
More complete details are available in the Alpha 2 release documentation.