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| Titel |
Elevation correction of ERA-Interim temperature data in complex terrain |
| VerfasserIn |
L. Gao, M. Bernhardt, K. Schulz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 16, no. 12 ; Nr. 16, no. 12 (2012-12-17), S.4661-4673 |
| Datensatznummer |
250013611
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| Publikation (Nr.) |
 copernicus.org/hess-16-4661-2012.pdf |
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| Zusammenfassung |
| Air temperature controls a large variety of environmental processes, and is
an essential input parameter for land surface models, for example in hydrology,
ecology and climatology. However, meteorological networks, which can provide
the necessary information, are commonly sparse in complex terrains,
especially in high mountainous regions. In order to provide temperature data
in an adequate temporal and spatial resolution for local scale applications
a new elevation correction method has been developed that is able to
downscale 3-hourly ERA-Interim temperature data. The scheme is based on
model internal vertical lapse rates derived from different ERA-Interim
pressure levels and has been validated for twelve meteorological stations in
the German and Swiss Alps. The method was also compared with two other
statistical, lapse rate based correction approaches. The results indicate
that the use of model internal ERA-Interim lapse rates can significantly
improve the downscaling performance when compared to the standard procedure
of using fixed lapse rates. |
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