Lecture 2 Weather forecasting Atmospheric Phenomena as Fractals

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Lecture 2 Weather forecasting

Lecture 2 Weather forecasting

Atmospheric Phenomena as Fractals we sea that there appears to be a continuum of

Atmospheric Phenomena as Fractals we sea that there appears to be a continuum of scales in space and in time for which we observe atmospheric phenomena. Atmospheric phenomena, as represented by the wind, pressure, redar-echo, or cloud fields, are fractals.

Fractals are geometric shapes that have structure at all scales.

Fractals are geometric shapes that have structure at all scales.

Euclidean lines, for example, do not form fractals, because they do not have structure

Euclidean lines, for example, do not form fractals, because they do not have structure at all scales. Below some scale figures composed of Euclidean lines are always just lines.

The role of observations and theory Can we could classified phenomena in terms of

The role of observations and theory Can we could classified phenomena in terms of physical characteristics? We have two ways for detect weather phenomena, meteorology. by synoptic or dynamic

Synoptic Meteorology is largely based upon observations. on the other hand ; Dynamic meteorology

Synoptic Meteorology is largely based upon observations. on the other hand ; Dynamic meteorology is based on the acceptance of physical laws and deductions about atmospheric behavior based upon those laws.

We can first observe a phenomenon and describe its characteristics, then analyze it to

We can first observe a phenomenon and describe its characteristics, then analyze it to learn why it forms and why it behaves as it does, and ultimately to predict its behavior.

Or we can predict its existence based upon physical law. and then search for

Or we can predict its existence based upon physical law. and then search for it in nature

For example, the extratropical cyclone was first observed, then analyzed, and much later numerically

For example, the extratropical cyclone was first observed, then analyzed, and much later numerically predicted. On other hand, Gravity waves were first discussed as solotions to a set of dynamical equations, and later were sought observationally.

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