ESA Data Ontology: ESADO: CONVERGENCE

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CONVERGENCE

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)

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);

https://gcmd.earthdata.nasa.gov/kms/concept/a2cc8e02-3207-4c40-af41-9656404bac0a

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ESA Data Ontology