Contents

A software package to run ensemble data assimilation and parameter estimation experiments with the EAKF and LETKF.

General-purpose code

• Module ENDA.py: Data assimilation code. Includes implementations of the EAKF and the LETKF. Also includes classes for data assimilation cycles, diagnostics and experiments (nature run + cycle + diagnostics).

Basic parameter estimation code

These were used in a manuscript on parameter estimation for a convective boundary layer parameterization scheme (single-column model, SCM):

• Script PE_CBL.py: Main code.
• Module PE_CBL_models.py: Classes and functions for the SCM intialization and integration
• Module PE_CBL_graphics.py: Functions to plot results.
• A set of *tar.gz archives, containing .json configuration files for the parameter estimation experiments.

Other code (utils folder)

• Module observations.py: Code to ingest external observations (e.g. from an LES model, or actual observations) in parameter estimation experiments.
• Module verification.py: Code to verify experiments against external observations.
• Script replace_text.py: A tool to edit a set of similar config files all at once.

Other

• Notebook Overview.ipynb: Simple usage examples. Much more exhaustive examples are provided in PE_CBL.py.

Dependencies

The code depends on numpy, scipy, matplotlib, json, pandas, pickle, os, glob