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| Titel |
Interactions of planetary waves and gravity waves observed by SABER and investigated by global ray tracing modeling |
| VerfasserIn |
Peter Preusse, Catrin Lehmann, Martin Kaufmann, Stephen D. Eckermann |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250039110
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| Zusammenfassung |
| Planetary waves (PW) change the global background wind fields and thus
modify global gravity wave (GW) distributions by critical level
filtering and modulation of the GW spectrum by refraction. On the other
hand, forcing by breaking GWs has a longitudinal structure which
can amplify or suppress PWs. We will analyze global GW distributions
inferred from the SABER instrument for signatures of PWs and compare the
results to PW fields inferred from the SABER temperature measurements.
These experimental results will be compared to global ray tracing
modeling with the GROGRAT ray tracer. The influence of assumptions
generally made in GW parameterization schemes, such as vertical
propagation, on the longitudinal asymmetries in the GW induced
acceleration will be quantified and the GW forcing of PWs will be discussed. |
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