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John C. Bellamy

The metric system of units is seen to have evolved into the International System of “SI” Units to provide primarily for defining other specifically-useful units; of which a more usefully Earth-related and Personally-related “Geospheric System of Units” is proposed to serve the growing worldwide needs to coordinate human activities with the nature of their Earthly-environment. That Geospheric System essentially extends the way in which unit-intervals of time and horizontal positions are customarily coordinated throughout the world; and could well first be utilized to serve the characteristic meteorological need to coordinate the vertical positions of things in and of the Earth's atmosphere.

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John C. Bellamy

Methods of calculating horizontal divergence, vertical velocity and vorticity directly from wind observations without analyzing the wind field are presented. The appropriate formulae for these quantities in terms of the finite areas or volumes determined by the observation points are derived. Convenient nomographs and tabular forms for their calculation are described and illustrated.

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