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| Titel |
Spectral wave analysis at the mesopause from SCIAMACHY airglow data compared to SABER temperature spectra |
| VerfasserIn |
M. Ern, C. Lehmann, M. Kaufmann, M. Riese |
| 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 ; 27, no. 1 ; Nr. 27, no. 1 (2009-01-23), S.407-416 |
| Datensatznummer |
250016381
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| Publikation (Nr.) |
 copernicus.org/angeo-27-407-2009.pdf |
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| Zusammenfassung |
Space-time spectral analysis of satellite data is an important method
to derive a synoptic picture of the atmosphere
from measurements sampled asynoptically by satellite instruments.
In addition, it serves as a powerful tool to
identify and separate different wave modes in the atmospheric data.
In our work we present space-time spectral analyses of
chemical heating rates derived from
Scanning Imaging Absorption SpectroMeter for Atmospheric CHartographY
(SCIAMACHY) hydroxyl nightglow emission measurements onboard Envisat
for the years 2002–2006 at mesopause heights.
Since SCIAMACHY nightglow hydroxyl emission measurements are
restricted to the ascending (nighttime) part of the satellite orbit,
our analysis also includes temperature spectra derived from
15 μm CO2 emissions measured by the
Sounding of the Atmosphere using Broadband Emission Radiometry
(SABER) instrument.
SABER offers better temporal and spatial coverage (daytime and night-time
values of temperature) and a more regular sampling grid.
Therefore SABER spectra also contain information about higher frequency waves.
Comparison of SCIAMACHY and SABER results shows that SCIAMACHY,
in spite of its observational restrictions, provides valuable
information on most of the wave modes present in the mesopause region.
The main differences between wave spectra obtained from these sensors
can be attributed to the differences in their sampling patterns. |
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