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A validation of river routing networks for catchment modelling from small to large scales
SMHI, Forskningsavdelningen, Hydrologi.ORCID-id: 0000-0002-0086-4453
SMHI, Forskningsavdelningen, Hydrologi.
SMHI, Forskningsavdelningen, Hydrologi.
2013 (engelsk)Inngår i: HYDROLOGY RESEARCH, ISSN 1998-9563, Vol. 44, nr 5, s. 917-925Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Underpinning all hydrological simulations is an estimate of the catchment area upstream of a point of interest. Locally, the delineation of a catchment and estimation of its area is usually done using fine scale maps and local knowledge, but for large-scale hydrological modelling, particularly continental and global scale modelling, this level of detailed data analysis is not practical. For large-scale hydrological modelling, remotely sensed and hydrologically conditioned river routing networks, such as HYDROlk and HydroSHEDS, are often used. This study evaluates the accuracy of the accumulated upstream area in each gridpoint given by the networks. This is useful for evaluating the ability of these data sets to delineate catchments of varying scale for use in hydrological models. It is shown that the higher resolution HydroSHEDS data set gives better results than the HYDROlk data set and that accuracy decreases with decreasing basin scale. In ungauged basins, or where other local catchment area data are not available, the validation made in this study can be used to indicate the likelihood of correctly delineating catchments of different scales using these river routing networks.

sted, utgiver, år, opplag, sider
2013. Vol. 44, nr 5, s. 917-925
Emneord [en]
drainage basins, drainage networks, river routing, watershed delineation
HSV kategori
Forskningsprogram
Hydrologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-398DOI: 10.2166/nh.2012.341ISI: 000326902700011OAI: oai:DiVA.org:smhi-398DiVA, id: diva2:800038
Tilgjengelig fra: 2015-04-01 Laget: 2015-03-31 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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Donnelly, ChantalRosberg, JörgenIsberg, Kristina

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