| Predicting pesticide concentrations in river water with a hydrologically calibrated basin-scale runoff model. | |
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MedLine Citation:
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PMID: 12079096 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Hydrological diffuse pollution models require calibration before they can be used to make accurate long-term predictions for a range of hydrological and meteorological conditions. As such, the applicability of the models to the dispersion of new pesticides is limited due to the lack of calibration data. In this study, the performance of a GIS-based basin-scale runoff model for predicting the concentrations of paddy-farming pesticides in river water was examined when calibrated using hydrological data alone, without optimization based on empirical pesticide concentration data. The prediction accuracy on a daily or hourly scale was somewhat unsatisfactory due to inevitable compromises concerning rice farming schedules. However, the month-averaged pesticide concentrations were satisfactorily accurate; more than 50% of predicted values were between half and twice the observed values, considering the deficiencies of the input data, particularly for pesticide usage, which may include up to 50% error. |
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Authors:
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Y Matsui; S Itoshiro; M Buma; T Matsushita; K Hosogoe; A Yuasa; S Shinoda; T Inoue |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Water science and technology : a journal of the International Association on Water Pollution Research Volume: 45 ISSN: 0273-1223 ISO Abbreviation: Water Sci. Technol. Publication Date: 2002 |
Date Detail:
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Created Date: 2002-06-24 Completed Date: 2002-12-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9879497 Medline TA: Water Sci Technol Country: England |
Other Details:
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Languages: eng Pagination: 141-8 Citation Subset: IM |
Affiliation:
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Department of Civil Engineering, Gifu University, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Calibration Forecasting Geographic Information Systems* Models, Theoretical* Pesticides / analysis* Rain Sensitivity and Specificity Water Movements* Water Pollutants / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Pesticides; 0/Water Pollutants |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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