Description: 1. Introduction.- 1.1 Spatial and temporal averaging in meteorological problems.- 1.2 Some information on the statistical characteristics of meteorological fields.- 2. Statistical Description of Averaged Fields.- 2.1 Statistical structure of averaged data.- 2.2 Representativeness of point measurements with respect to averaged values.- 2.3 Influence of area shape on the representativeness of a point value.- 3. The Accuracy of Averaging Discrete Data.- 3.1 The accuracy of representing average quantities by discrete data.- 3.2 Approximate evaluation of the averaging accuracy.- 3.3 Optimal averaging of discrete data.- 3.4 Accuracy of averaging the characteristics of statistical structure.- 4. Problems of Averaging Some Meteorological Fields.- 4.1 The representativeness of precipitation data.- 4.2 Accuracy of zonal averaging of air temperature.- 5. Practical Aspects of the Spatial Averaging of Meteorological Fields.- 5.1 Methods of averaging meteorological fields and numerical applications.- 5.2 A brief description of the averaging algorithms.- 5.3 Comparative accuracy of some averaging algorithms.- Conclusions.- List of Symbols.- References.

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