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| Titel |
Modes of zonal mean temperature variability 20–100 km from the TIMED/SABER observations |
| VerfasserIn |
Y. Jiang, Z. Sheng, H. Q. Shi |
| 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 ; 32, no. 3 ; Nr. 32, no. 3 (2014-03-27), S.285-292 |
| Datensatznummer |
250121041
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| Publikation (Nr.) |
 copernicus.org/angeo-32-285-2014.pdf |
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| Zusammenfassung |
| In this study we investigate the spatial variabilities of the zonal mean
temperature (20–100 km) from the TIMED (Thermosphere, Ionosphere,
Mesosphere, Energetics and Dynamics)/SABER (Sounding of the Atmosphere using
Broadband Emission Radiometry) satellite using the empirical
orthogonal functions (EOFs). After removing the climatological annual mean, the
first three EOFs are able to explain 87.0% of temperature variabilities. The
primary EOF represents 74.1% of total anomalies and is dominated by the
north–south contrast. Patterns in the second and third EOFs are related to
the semiannual oscillations (SAO) and mesospheric temperature inversions
(MTI), respectively. The quasi-biennial oscillation (QBO) component is also decomposed
into the seventh EOF with contributions of 1.2%. Last, we use the first
three modes and annual mean temperature to reconstruct the data. The result
shows small differences are in low latitude, which increase with latitude in
the middle stratosphere and upper mesosphere. |
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