http://www.met.reading.ac.uk/~sws07om/xdocs/IIEVCA/lorenz63_chaos.py
http://www.met.reading.ac.uk/~sws07om/xdocs/IIEVCA/lorenz63_ensemble.py
http://www.met.reading.ac.uk/~sws07om/xdocs/IIEVCA/lorenz63_flow_dependency.py
http://www.met.reading.ac.uk/~sws07om/xdocs/IIEVCA/lorenz63_intro.py
http://www.met.reading.ac.uk/~sws07om/xdocs/IIEVCA/lorenz63.py