The Return of the Clouds Are Clouds Self-Organised Critical Systems? Gillian Cupitt.

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Presentation transcript:

The Return of the Clouds Are Clouds Self-Organised Critical Systems? Gillian Cupitt

The Return of the Clouds What is Self-Organised Criticality? Examining Fractals in clouds Looking for periodicity

What is Self-Organised Criticality? Self-Organised Criticality is characterised by Continuous Change High Sensitivity to External conditions Events on all Scales

Self-Organised Criticality Some indicators: Regular distribution of catastrophic events “1/f” noise FRACTALS

Fractals Self-Similarity

Fractals Non-linear dimensions 1 D 2 D 1.54 D ??

The Picture

Fractal Analysis

OBEYING A POWER LAW

Finding the dimension… 1 - D = gradient of line D = 1.1 NOT AN INTEGER!

Do All clouds have fractals???

D = 1.4

PERIODICITY IN CLOUDS  An insight into MATLAB and its errors… PART 2:

Fourier Transform

Acknowledgements Per Bak, “How nature works”, 1947 Neeraj Sharma, for sharing his ideas and results Iver Cairns for guidance Matlab People who listened to me whinge about Matlab