@prefix skos: . skos:changeNote """2017-04-20 14:36:33.0 [sritz] Move Concepts delete broader relation (null); add broader relation (CONVERGENCE/DIVERGENCE [a2cc8e02-3207-4c40-af41-9656404bac0a,83349] - WIND DYNAMICS [492ffe26-8fbe-4d7d-a537-495fb96bdcce,278857]); """, """2017-04-20 14:37:10.0 [sritz] Rename Concept update PrefLabel (CONVERGENCE); """, """2017-04-21 11:15:26.0 [tstevens] update Definition (Pressure fluctuations at the Earth's surface are produced by movements of air which produce changes in the mass of air in a vertical column above the ground. A net gain in mass produces an increase in pressure leading to a high pressure system. A net loss of mass gives rise to a low. When there is a horizontal flow of air into a region (convergence) a vertical upward movement of air occurs otherwise there would be a continual increase in density of the air. Divergence occurs when there is a net horizontal outward flow of air from a region. This leads to a vertical downward movement of air.); update Definition (University of Sydney, School of Physics); """ ; skos:definition "Pressure fluctuations at the Earth's surface are produced by movements of air which produce changes in the mass of air in a vertical column above the ground. A net gain in mass produces an increase in pressure leading to a high pressure system. A net loss of mass gives rise to a low. When there is a horizontal flow of air into a region (convergence) a vertical upward movement of air occurs otherwise there would be a continual increase in density of the air. Divergence occurs when there is a net horizontal outward flow of air from a region. This leads to a vertical downward movement of air."@en ; skos:prefLabel "CONVERGENCE"@en ; skos:inScheme ; skos:broader ; a skos:Concept . skos:prefLabel "WIND DYNAMICS"@en ; a skos:Concept ; skos:narrower .