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| Titel |
Internal and external variability in regional simulations of the Iberian Peninsula climate over the last millennium |
| VerfasserIn |
J. J. Gómez-Navarro, J. P. Montávez, P. Jiménez-Guerrero, S. Jerez, R. Lorente-Plazas, J. F. González-Rouco, E. Zorita |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 8, no. 1 ; Nr. 8, no. 1 (2012-01-04), S.25-36 |
| Datensatznummer |
250005359
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| Publikation (Nr.) |
 copernicus.org/cp-8-25-2012.pdf |
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| Zusammenfassung |
| In this study we analyse the role of internal variability in regional climate
simulations through a comparison of two regional paleoclimate simulations for
the last millennium. They share the same external forcings and model
configuration, differing only in the initial condition used to run the
driving global model simulation. A comparison of these simulations allows us
to study the role of internal variability in climate models at regional
scales, and how it affects the long-term evolution of climate variables such
as temperature and precipitation. The results indicate that, although
temperature is homogeneously sensitive to the effect of external forcings,
the evolution of precipitation is more strongly governed by random
unpredictable internal dynamics. There are, however, some areas where the role
of internal variability is lower than expected, allowing precipitation to
respond to the external forcings. In this respect, we explore the underlying
physical mechanisms responsible for it. This study identifies areas,
depending on the season, in which a direct comparison between model
simulations of precipitation and climate reconstructions would be meaningful,
but also other areas where good agreement between them should not be
expected even if both are perfect. |
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