atmospheric circulation

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lecture 1.

Created by k1211652 over 5 years ago
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1 theoretical meterology
1.1 attemps to explain: operation of atmospheric heat engine, provide physical basis to predict future state.
1.2 main tasks: 1. discover physical relationships with govern atmospheric behaviour(e.g- enegry fluxes within the atmosphere and through its boundaries). and to express the relationships in quantative form. - 2. to find solutions (e.g.- to predict atmospheric behaviour from these relations).(but this doesnt necessarily mean 'forecasting' in the usua; sense of the word).
1.3 methods: branches out of physics which deals with different types of energy.
1.3.1 theromodynamics- study of thermal energy fluid dynamics- study of mechanical energy radition- study of eletromagnetic
2 statistics
2.1 Assimilation- case studies in which 'typical' situations have been selected. - (e.g Norwegian extra tropical cyclone model). compositing- providing a way of generalizing systems - (e.g tropical cyclone) . statistics- to summeries vast quantities of data that are generated continuously by observation and by modelling - to calculate quantities relevant to understanding climate- to identify possible connections or relationships that can subsequently be investigated by the physics of the situation - to evaluate the performance of theoretical numerical models relative to observations.
3 mathematical preliminaries:scalars- a quantity which: - process magnitide, specified by a number and units, - combines with other similar quanitites according to the laws of ordinary algebra (e.g- mass, length, time, temperature). Vector: a quantity which - possess magnitude, specified by a number and units - possess direction, specified by a line and a sense - combionaes with other similar quantites according to special geometerical laws (e.g- force, velocity, weight, acceleration).

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