The climatic elements the observation of which is valuable for agricultural purposes can be approached on an idealized threefold scale: (1) microscale observations of small areas for research designed to elucidate basic physical processes; (2) mesoscale climatic networks designed for practicing farmers to improve their operations; and (3) macroscale regional networks intended for weather forecasting and for gathering basic climatic data (see also weather forecasting: Meteorological measurement and weather forecasting). Macroscale stations can be further divided into first-order and second-order stations, the number and type of observations different for each. Micrometeorology demands the most elaborate array of measuring devices, while ...(100 of 17649 words)
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