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Statistical study of gravity waves over Brazilian sector using aerodromes data

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Statistical study of gravity waves over Brazilian sector using aerodromes data
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43
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CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Production Year2020
Production PlaceITA (Brazil)

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Abstract
Communications using radio waves based on the GNSS (Global Navigation Satellite System) depend on the spatio-temporal behavior of the ionospheric layer, which is exposed to disturbances that produce distortion of the microwave signals used in satellite technologies. One of the factors that produces these disturbances in the ionosphere are gravity waves, caused by perturbations in the lower atmosphere resulting from topographic and climatic factors. Despite its importance for airworthiness, there are still no technologies to correct or anticipate the effects of these ionospheric instabilities. The objective of this work is to study the formation of gravity waves from meteorological quantities, such as pressure, wind speed, kinetic energy, and potential energy, obtained from all aerodromes in the Brazilian sector. It is worth mentioning that this is the first study that analyzes data from all aerodromes where radiosondeings are routinely performed. We present an extensive and detailed statistical analysis of the time series of measures and quantities related to gravity waves, obtaining a general scenario of its temporal and spatial behavior covering the entire national territory.
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