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| Titel |
Technical Note: Bias correcting climate model simulated daily temperature extremes with quantile mapping |
| VerfasserIn |
B. Thrasher, E. P. Maurer, C. McKellar, P. B. Duffy |
| 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. 9 ; Nr. 16, no. 9 (2012-09-17), S.3309-3314 |
| Datensatznummer |
250013471
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| Publikation (Nr.) |
 copernicus.org/hess-16-3309-2012.pdf |
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| Zusammenfassung |
| When applying a quantile mapping-based bias correction to daily temperature
extremes simulated by a global climate model (GCM), the transformed values
of maximum and minimum temperatures are changed, and the diurnal temperature
range (DTR) can become physically unrealistic. While causes are not
thoroughly explored, there is a strong relationship between GCM biases in
snow albedo feedback during snowmelt and bias correction resulting in
unrealistic DTR values. We propose a technique to bias correct DTR, based on
comparing observations and GCM historic simulations, and combine that with
either bias correcting daily maximum temperatures and calculating daily
minimum temperatures or vice versa. By basing the bias correction on a base
period of 1961–1980 and validating it during a test period of 1981–1999, we
show that bias correcting DTR and maximum daily temperature can produce more
accurate estimations of daily temperature extremes while avoiding the
pathological cases of unrealistic DTR values. |
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