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| Titel |
Reconstruction of high resolution atmospheric fields for Northern Europe using analog-upscaling |
| VerfasserIn |
F. Schenk, 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. 5 ; Nr. 8, no. 5 (2012-10-26), S.1681-1703 |
| Datensatznummer |
250005849
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| Publikation (Nr.) |
 copernicus.org/cp-8-1681-2012.pdf |
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| Zusammenfassung |
The analog method (AM) has found application to reconstruct gridded climate
fields from the information provided by proxy data and climate model
simulations. Here, we test the skill of different setups of the AM, in a
controlled but realistic situation, by analysing several statistical
properties of reconstructed daily high-resolution atmospheric fields for
Northern Europe for a 50-yr period. In this application, station
observations of sea-level pressure and air temperature are combined with
atmospheric fields from a 50-yr high-resolution regional climate
simulation. This reconstruction aims at providing homogeneous and physically
consistent atmospheric fields with daily resolution suitable to drive high
resolution ocean and ecosystem models.
Different settings of the AM are evaluated in this study for the period
1958–2007 to estimate the robustness of the reconstruction and its ability
to replicate high and low-frequency variability, realistic probability
distributions and extremes of different meteorological variables. It is
shown that the AM can realistically reconstruct variables with a strong
physical link to daily sea-level pressure on both a daily and monthly scale.
However, to reconstruct low-frequency decadal and longer temperature
variations, additional monthly mean station temperature as predictor is
required. Our results suggest that the AM is a suitable upscaling tool to
predict daily fields taken from regional climate simulations based on sparse
historical station data. |
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