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| Titel |
Test of diurnal and semidiurnal tidal analysis of temperatures from SABER-like sampling of a realistic global model, CMAM-DAS |
| VerfasserIn |
C. E. Meek, A. H. Manson, J. R. Drummond |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 5 ; Nr. 29, no. 5 (2011-05-03), S.723-730 |
| Datensatznummer |
250017008
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| Publikation (Nr.) |
 copernicus.org/angeo-29-723-2011.pdf |
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| Zusammenfassung |
| Because the TIMED satellite orbit precesses slowly in local time,
3 degrees (12 min) per day, thus apparently covering all local
times at low and mid latitudes in 2 months when ascending and
descending nodes
are included, there is a potential for determining migrating and
non-migrating tides from temperatures. Many papers have been written
on the subject, but none have taken a realistic model atmosphere with
high time resolution and tested tidal analysis. The present paper
contains results from a tidal analysis of a SABER-sampled global model,
the Canadian Middle
Atmosphere (data assimilated) Model, CMAM-DAS, which has hourly
values, and compares these with analysis using the full model.
Fits to 60 d intervals at the equator show reasonable agreement
between full and SABER-sampled data analysis for
mean, diurnal and semidiurnal tides, with or without
inclusion of a linear detrend term.
At 50° N where there is irregular coverage of local times,
there are
serious disagreements in all parameters except the background mean,
and detrending has a significant effect. |
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