# DART_LAB Tutorial

| Jump to DART Documentation Main Index version information for this file: $Id: DART_LAB.html 10126 2016-04-20 16:56:08Z thoar $

Presentations / Matlab® Programs / TERMS OF USE

## Overview

The files in this directory contain PDF tutorial materials on DART, and Matlab® exercises. See below for links to the PDF files and a list of the corresponding matlab scripts.

This tutorial begins at a more introductory level than the materials in the tutorial directory, and includes hands-on exercises at several points. In a workshop setting, these materials and exercises took about 1.5 days to complete.

## DART Tutorial Presentations

Here are the PDF files for the presentation part of the tutorial:

- Section 1: The basics in 1D.
- Section 2: How should observations of a state variable impact an unobserved state variable? Multivariate assimilation.
- Section 3: Sampling error and localization.
- Section 4: The Ensemble Kalman Filter (Perturbed Observations).

Please note: as Matlab continues to develop its GUI capabilities, some features change and the GUIs we have written may behave slightly differently with different Matlab versions. In early 2016, I rewrote the GUIs such that they (should) work with almost all(?) versions of Matlab available at the time. I also chose to consolidate the multiple-figure GUIs into a single, rescalable figure so some of the presentation materials may look slightly different than the new tools.

## Matlab® Hands-On Exercises

In the matlab subdirectory are a set of Matlab scripts and GUI (graphical user interface) programs which are exercises that go with the tutorial. Each is interactive with settings that can be changed and rerun to explore various options. A valid Matlab license is needed to run these scripts.

The exercises use the following functions:

- gaussian_product
- oned_model
- oned_ensemble
- run_lorenz_63
- run_lorenz_96
- twod_ensemble

To run these, cd into the DART_LAB/matlab directory, start matlab, and type the names at the prompt.

## Terms of Use

DART software - Copyright 2004 - 2013 UCAR.
This open source software is provided by UCAR, "as is",
without charge, subject to all terms of use at
http://www.image.ucar.edu/DAReS/DART/DART_download

Contact: | DART core group
Revision: | $Revision: 10126 $
Source: | $URL: https://proxy.subversion.ucar.edu/DAReS/DART/trunk/DART_LAB/DART_LAB.html $
Change Date: | $Date: 2016-04-20 10:56:08 -0600 (Wed, 20 Apr 2016) $
Change history: | try "svn log" or "svn diff"