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| Titel |
Modelling the effects of acid deposition: refinements, adjustments and inclusion of nitrogen dynamics in the MAGIC model |
| VerfasserIn |
B. J. Cosby, R. C. Ferrier, A. Jenkins, R. F. Wright |
| 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 ; 5, no. 3 ; Nr. 5, no. 3, S.499-518 |
| Datensatznummer |
250002570
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| Publikation (Nr.) |
 copernicus.org/hess-5-499-2001.pdf |
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| Zusammenfassung |
| The MAGIC model of the responses of
catchments to acidic deposition has been applied and tested extensively over a
15 year period at many sites and in many regions around
the world. Overall, the model has proven to be robust, reliable and useful in a
variety of scientific and managerial activities. Over the
years, several refinements and additions to MAGIC have been proposed and/or
implemented for particular applications. These adjustments
to the model structure have all been included in a new version of the model
(MAGIC7). The log aluminium – pH relationship now does
not have to be fixed to aluminium trihydroxide solubility. Buffering by organic
acids using a triprotic analog is now included. Dynamics
of nitrogen retention and loss in catchments can now be linked to soil nitrogen
and carbon pools. Simulation of short-term episodic
response by mixing fractions of different water types is also possible. This
paper presents a review of the conceptual structure of
MAGIC7 relating to long-term simulation of acidification and recovery, describes
the conceptual basis of the new nitrogen dynamics and
provides a comprehensive update of the equations, variables, parameters and
inputs for the model.
Keywords: process-based model, acid deposition, recovery |
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