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| Titel |
Planetary wave coupling in the middle atmosphere (20-90km): A CUJO study involving TOMS, MetO and MF radar data |
| VerfasserIn |
T. Chshyolkova, A. H. Manson, C. E. Meek, S. K. Avery, D. Thorsen, J. W. MacDougall, W. Hocking, Y. Murayama, K. Igarashi |
| 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 ; 23, no. 4 ; Nr. 23, no. 4 (2006-06-03), S.1103-1121 |
| Datensatznummer |
250015206
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| Publikation (Nr.) |
 copernicus.org/angeo-23-1103-2005.pdf |
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| Zusammenfassung |
| The atmospheric coupling due to Planetary Waves (PW) in the middle
atmosphere (20-90km) has been studied using TOMS, MetO and MFR data. The
wavelet and wave number analyses have been applied to all parameters at five
CUJO (Canada US Japan Opportunity) locations. The CUJO network covers
latitudes of 31-52° N and longitudes from 81° W to 142° E, and
allows for the assessment of longitudinal variability. The results of
temporal and spectral comparisons show that the total ozone (TOMS) and MetO
temperatures at low stratospheric heights (typically 100mbar) have high
values of correlation as well as similar spectral content. The eastward
motions dominate at low stratospheric heights (100mbar), while westward
motions became comparable or even stronger in the upper stratosphere (0.46mbar).
During the summer months a reduction of PW activity has been observed
in the stratosphere, especially at its upper heights, and in the upper
middle atmosphere. The MetO (0.32mbar, 55km) and MFR winds (circa 60km)
are in good general agreement, especially for the zonal component. Several
examples of planetary wave activity at different atmospheric levels
throughout the middle atmosphere have been presented. These examples include
an eastward propagating 15-day disturbance with wave number 6, that has been
observed only at low stratospheric heights; long-period (20-30 days)
oscillations with wave number ~1 that have been detected in a wide
height range (20-90km); and an oscillation with period near 16 days that
was found only at mesospheric heights. |
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