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| Titel |
Daytime ozone and temperature variations in the mesosphere: A comparison between SABER observations and HAMMONIA model |
| VerfasserIn |
Sebastian Dikty, Hauke Schmidt, Mark Weber, Christian von Savigny, Martin G. Mlynczak |
| 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 |
250041874
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| Zusammenfassung |
| The scope of this paper is to investigate the latest version 1.07 SABER (Sounding of the
Atmosphere using Broadband Emission Radiometry) tropical ozone from the 1.27 mm as
well as from the 9.6 mm retrieval and temperature data with respect to daytime variations in
the upper mesosphere. For a better understanding of the processes involved we
compare these daytime variations to the output of the three-dimensional general
circulation and chemistry model HAMMONIA (Hamburg Model of the Neutral and
Ionized Atmosphere). The results show good agreement for ozone. The amplitude of
daytime variations is in both cases approximately 60 % of the daytime mean. During
equinox the daytime maximum ozone abundance is for both, the observations and
the model, higher than during solstice, especially above 80 km. We also use the
HAMMONIA output of daytime variation patterns of several other different trace gas
species, e.g., water vapor and atomic oxygen, to discuss the daytime pattern in ozone.
In contrast to ozone, temperature data show little daytime variations between 65
and 90 km and their amplitudes are on the order of less than 1.5 %. In addition,
SABER and HAMMONIA temperatures show significant differences above 80 km. |
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