Article: Advancing representation of hydrologic processes in the Soil and Water Assessment Tool (SWAT) through integration of the TOPographic MODEL (TOPMODEL) features
| Title | Advancing representation of hydrologic processes in the Soil and Water Assessment Tool (SWAT) through integration of the TOPographic MODEL (TOPMODEL) features | ||||
|---|---|---|---|---|---|
| Authors | Chen, J1 Wu, Y1 2 | ||||
| Keywords | Baseflows Saturated fraction Surface runoff Swat Topmodel | ||||
| Issue Date | 2012 | ||||
| Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhydrol | ||||
| Citation | Journal of Hydrology, 2012, v. 420-421, p. 319-328 [How to Cite?] DOI: http://dx.doi.org/10.1016/j.jhydrol.2011.12.022 | ||||
| Abstract | This paper presents a study of the integration of the Soil and Water Assessment Tool (SWAT) model and the TOPographic MODEL (TOPMODEL) features for enhancing the physical representation of hydrologic processes. In SWAT, four hydrologic processes, which are surface runoff, baseflow, groundwater re-evaporation and deep aquifer percolation, are modeled by using a group of empirical equations. The empirical equations usually constrain the simulation capability of relevant processes. To replace these equations and to model the influences of topography and water table variation on streamflow generation, the TOPMODEL features are integrated into SWAT, and a new model, the so-called SWAT-TOP, is developed. In the new model, the process of deep aquifer percolation is removed, the concept of groundwater re-evaporation is refined, and the processes of surface runoff and baseflow are remodeled. Consequently, three parameters in SWAT are discarded, and two new parameters to reflect the TOPMODEL features are introduced. SWAT-TOP and SWAT are applied to the East River basin in South China, and the results reveal that, compared with SWAT, the new model can provide a more reasonable simulation of the hydrologic processes of surface runoff, groundwater re-evaporation, and baseflow. This study evidences that an established hydrologic model can be further improved by integrating the features of another model, which is a possible way to enhance our understanding of the workings of catchments. © 2011 Elsevier B.V. | ||||
| ISSN | 0022-1694 2011 Impact Factor: 2.656 2011 SCImago Journal Rankings: 0.084 | ||||
| DOI | http://dx.doi.org/10.1016/j.jhydrol.2011.12.022 | ||||
| ISI Accession Number ID | WOS:000301082000027
Funding Information: This research was supported by two Hong Kong RGC GRF projects (HKU 711008E and HKU710910E). The authors are grateful for the valuable review comments and suggestions from two anonymous reviewers. | ||||
| References | References in Scopus | ||||
| Grants | Experimental and Numerical Studies of the Hydrological Features of Flash Floods in Hong Kong |
| dc.contributor.author | Chen, J | ||||
|---|---|---|---|---|---|
| dc.contributor.author | Wu, Y | ||||
| dc.date.accessioned | 2012-06-26T06:06:27Z | ||||
| dc.date.available | 2012-06-26T06:06:27Z | ||||
| dc.date.issued | 2012 | ||||
| dc.description.abstract | This paper presents a study of the integration of the Soil and Water Assessment Tool (SWAT) model and the TOPographic MODEL (TOPMODEL) features for enhancing the physical representation of hydrologic processes. In SWAT, four hydrologic processes, which are surface runoff, baseflow, groundwater re-evaporation and deep aquifer percolation, are modeled by using a group of empirical equations. The empirical equations usually constrain the simulation capability of relevant processes. To replace these equations and to model the influences of topography and water table variation on streamflow generation, the TOPMODEL features are integrated into SWAT, and a new model, the so-called SWAT-TOP, is developed. In the new model, the process of deep aquifer percolation is removed, the concept of groundwater re-evaporation is refined, and the processes of surface runoff and baseflow are remodeled. Consequently, three parameters in SWAT are discarded, and two new parameters to reflect the TOPMODEL features are introduced. SWAT-TOP and SWAT are applied to the East River basin in South China, and the results reveal that, compared with SWAT, the new model can provide a more reasonable simulation of the hydrologic processes of surface runoff, groundwater re-evaporation, and baseflow. This study evidences that an established hydrologic model can be further improved by integrating the features of another model, which is a possible way to enhance our understanding of the workings of catchments. © 2011 Elsevier B.V. | ||||
| dc.description.grant | Experimental and Numerical Studies of the Hydrological Features of Flash Floods in Hong Kong | ||||
| dc.description.grantcode | 98676 | ||||
| dc.description.nature | Link_to_subscribed_fulltext | ||||
| dc.identifier.citation | Journal of Hydrology, 2012, v. 420-421, p. 319-328 [How to Cite?] DOI: http://dx.doi.org/10.1016/j.jhydrol.2011.12.022 | ||||
| dc.identifier.citeulike | 10158599 | ||||
| dc.identifier.doi | http://dx.doi.org/10.1016/j.jhydrol.2011.12.022 | ||||
| dc.identifier.epage | 328 | ||||
| dc.identifier.hkuros | 207937 | ||||
| dc.identifier.isi | WOS:000301082000027
Funding Information: This research was supported by two Hong Kong RGC GRF projects (HKU 711008E and HKU710910E). The authors are grateful for the valuable review comments and suggestions from two anonymous reviewers. | ||||
| dc.identifier.issn | 0022-1694 2011 Impact Factor: 2.656 2011 SCImago Journal Rankings: 0.084 | ||||
| dc.identifier.scopus | eid_2-s2.0-84856234575 | ||||
| dc.identifier.spage | 319 | ||||
| dc.identifier.uri | http://hdl.handle.net/10722/150650 | ||||
| dc.identifier.volume | 420-421 | ||||
| dc.language | eng | ||||
| dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhydrol | ||||
| dc.publisher.place | Netherlands | ||||
| dc.relation.ispartof | Journal of Hydrology | ||||
| dc.relation.references | References in Scopus | ||||
| dc.subject | Baseflows | ||||
| dc.subject | Saturated fraction | ||||
| dc.subject | Surface runoff | ||||
| dc.subject | Swat | ||||
| dc.subject | Topmodel | ||||
| dc.title | Advancing representation of hydrologic processes in the Soil and Water Assessment Tool (SWAT) through integration of the TOPographic MODEL (TOPMODEL) features | ||||
| dc.type | Article |
Author Affiliations
- The University of Hong Kong
- United States Geological Survey