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| Titel |
Increase of upper troposphere/lower stratosphere wave baroclinicity during the second half of the 20th century |
| VerfasserIn |
J. M. Castanheira, J. C. Antuña, J. A. Añel, M. L. R. Liberato, L. de la Torre, L. Gimeno |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250028771
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| Zusammenfassung |
| Observational evidence of an increase of upper troposphere/lower stratosphere wave
baroclinicity, during the second half of the 20th century, is presented. The evidence is given
by positive trends in the energy of baroclinic normal modes of the NCEP/NCAR reanalysis,
and positive trends in the frequency of double tropopause events in radiosonde
data.
Considering results from several modelling studies, it is suggested that the positive trend
in the upper-troposphere/lower-stratosphere wave baroclinicity may be associated with the
increase of greenhouse gas radiative forcing. |
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