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| Titel |
Development of a semi-parametric PAR (Photosynthetically Active Radiation) partitioning model for the United States, version 1.0 |
| VerfasserIn |
J. C. Kathilankal, T. L. O'Halloran, A. Schmidt, C. V. Hanson, B. E. Law |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 5 ; Nr. 7, no. 5 (2014-10-24), S.2477-2484 |
| Datensatznummer |
250115743
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| Publikation (Nr.) |
 copernicus.org/gmd-7-2477-2014.pdf |
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| Zusammenfassung |
| A semi-parametric PAR diffuse radiation model was developed using commonly
measured climatic variables from 108 site-years of data from 17 AmeriFlux
sites. The model has a logistic form and improves upon previous efforts
using a larger data set and physically viable climate variables as
predictors, including relative humidity, clearness index, surface albedo
and solar elevation angle. Model performance was evaluated by comparison
with a simple cubic polynomial model developed for the PAR spectral range.
The logistic model outperformed the polynomial model with an improved
coefficient of determination and slope relative to measured data (logistic:
R2 = 0.76; slope = 0.76; cubic: R2 = 0.73; slope = 0.72),
making this the most robust PAR-partitioning model for the United
States
currently available. |
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