Automated catena‐based discretization of landscapes for the derivation of hydrological modelling units

Francke, Till; Güntner, Andreas; Mamede, George Leite; Müller, Eva N.; Bronstert, Axel

doi:10.1080/13658810701300873

Cited by 36 publications

(25 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The model has been adapted for applications in mountain regions with previous applications in Central Asia . The original spatial discretization based on hillslopes [G€ untner and Bronstert, 2004;Francke et al, 2008] was modified into an approach based on hydrological response units (HRUs) as it allows faster computations. The model has routines for snow versus rain differentiation, snow and glacier melt, glacier mass balance, interception, evapotranspiration, infiltration and saturation excess runoff, interflow, and groundwater runoff.…”

Section: 1002/2014wr016716mentioning

confidence: 99%

Attribution of streamflow trends in snow and glacier melt‐dominated catchments of the Tarim River, Central Asia

Duethmann

Bolch

Farinotti

et al. 2015

Water Resources Research

167

142

View full text Add to dashboard Cite

Observed streamflow of headwater catchments of the Tarim River (Central Asia) increased by about 30% over the period . This study aims at assessing to which extent these streamflow trends can be attributed to changes in air temperature or precipitation. The analysis includes a data-based approach using multiple linear regression and a simulation-based approach using a hydrological model. The hydrological model considers changes in both glacier area and surface elevation. It was calibrated using a multiobjective optimization algorithm with calibration criteria based on glacier mass balance and daily and interannual variations of discharge. The individual contributions to the overall streamflow trends from changes in glacier geometry, temperature, and precipitation were assessed using simulation experiments with a constant glacier geometry and with detrended temperature and precipitation time series. The results showed that the observed changes in streamflow were consistent with the changes in temperature and precipitation. In the Sari-Djaz catchment, increasing temperatures and related increase of glacier melt were identified as the dominant driver, while in the Kakshaal catchment, both increasing temperatures and increasing precipitation played a major role. Comparing the two approaches, an advantage of the simulation-based approach is the fact that it is based on process-based relationships implemented in the hydrological model instead of statistical links in the regression model. However, data-based approaches are less affected by model parameter and structural uncertainties and typically fast to apply. A complementary application of both approaches is recommended.

show abstract

Section: 1002/2014wr016716mentioning

confidence: 99%

Attribution of streamflow trends in snow and glacier melt‐dominated catchments of the Tarim River, Central Asia

Duethmann

Bolch

Farinotti

et al. 2015

Water Resources Research

167

142

View full text Add to dashboard Cite

show abstract

“…sub-basins, landscape units and their discretization into terrain components, using a semiautomated algorithm presented by Francke et al (2008). Topographic features were derived from a digital elevation model with 15-m resolution, generated from ASTER images by Creutzfeldt (2006).…”

Section: Model Parameterizationmentioning

confidence: 99%

Modelling spatio-temporal patterns of sediment yield and connectivity in a semi-arid catchment with the WASA-SED model

Medeiros

Güntner

Francke

et al. 2010

Hydrological Sciences Journal

View full text Add to dashboard Cite

Rainfall-runoff induced soil erosion causes important environmental degradation by reducing soil fertility and impacting on water availability as a consequence of sediment deposition in surface reservoirs used for water supply, particularly in semi-arid areas. However, erosion models developed on experimental plots cannot be directly applied to estimate sediment yield at the catchment scale, since sediment redistribution is also controlled by the transport conditions along the landscape. In particular, representation of landscape connectivity relating to sediment transfer from upslope areas to the river network is required. In this study, the WASA-SED model is used to assess the spatial and temporal patterns of water and sediment connectivity for a semi-arid meso-scale catchment (933 km 2 ) in Brazil. It is shown how spatial and temporal patterns of sediment connectivity within the catchment change as a function of landscape and event characteristics. This explains the nonlinear catchment response in terms of sediment yield at the outlet.Key words sediment yield; watershed connectivity; catchment scale; semi-arid; WASA-SED model Modélisation des patrons spatio-temporels de la connectivité et de la production de sédiments dans un bassin versant semi-aride à l'aide du modèle WASA-SED Résumé L'érosion des sols induite par le ruissellement cause d'importantes dégradations de l'environnement en réduisant la fertilité des sols et en ayant un impact sur la disponibilité de l'eau suite au dépôt de sédiments dans les réservoirs, particulièrement dans les régions semi-arides. Cependant, des modèles d'érosion développés pour des parcelles expérimentales ne peuvent pas être appliqués à l'évaluation de la production de sédiments à l'échelle des bassins hydrographiques, parce que la redistribution des sédiments est aussi contrôlée par les conditions de transport dans le paysage. En particulier il est nécessaire de représenter la connectivité du paysage en relation avec le transfert des sédiments des versants vers le réseau hydrographique. Dans cette étude, on utilise le modèle WASA-SED pour évaluer les patrons spatio-temporels de la connectivité de l'eau et des sédiments dans un bassin versant semi-aride de méso-échelle (933 km 2 ) au Brésil. Les résultats montrent comment les patrons spatio-temporels de la connectivité des sédiments dans le bassin versant changent en fonction des caractéristiques du paysage et des événements. Ceci explique la réponse non-linéaire du bassin versant en termes de production de sédiments à l'exutoire.Mots clefs production des sédiments; connectivité; échelle du basin versant; semi-aride; modèle WASA-SED

show abstract

“…While WASA_zero performs poorly when parameterized based on the broad soil and geological maps (using the same semi-automated delineation algorithm LUMP; Francke et al 2008), exchanging the precise but scarce hydraulic soil parameters with standard values after Carsel and Parrish (1988) in the fully parameterized model has a minor impact (Fig. 3).…”

Section: Discussionmentioning

confidence: 99%

“…The LUMP algorithm (Landscape Unit Mapping Program; Francke et al 2008) proposed as the standard WASA preprocessing tool was used as a semiautomated approach to delineate catenas and identify the spatial-functional entities based on an analysis of the given digital elevation model (DEM), soil and vegetation inputs. Moreover, stream network geometries and hydraulic conductivity of the bedrock have to be given.…”

Section: Eco-hydrological Model Frameworkmentioning

confidence: 99%

An experiment to gauge an ungauged catchment: rapid data assessment and eco-hydrological modelling in a data-scarce rural catchment

Jackisch

Zehe

Samaniego

et al. 2014

Hydrological Sciences Journal

View full text Add to dashboard Cite

We conducted a PUB (predictions in ungauged basins) experiment looking at hydrology and crop dynamics in the semi-arid rural Mod catchment in India. The experiment was motivated by the aims (a) to develop a coupled eco-hydrological model capable of analysing land-use strategies concerning crop water need, erosion protection, crop yield and resistivity against droughts and floods, and (b) to assess the feasibility of a strategy for collecting the necessary data in a data-scarce region. Our experiment combines parsimonious data assessment and eco-hydrological model coupling at the lower mesoscale. Linking bottom-up sampling of functionally representative soil classes and top-down regionalization based on spectral properties of the same resulted in a comprehensive distributed data basis for the model. A clear focus on the dominating processes and the catena as the organizing landscape element in the given environmental setting enabled this. We employed the WASA (Water Availability in Semi-Arid environments) model for uncalibrated process-based water balance modelling and integrated a crop simulation subroutine based on the SWAP (Soil Water Atmosphere Plant) model to account for crop dynamics, feedbacks and yield estimation. While we found the data assessment strategy and the hydrological model application largely feasible, in terms of its accounting for scale, processes and model concepts, the simulation of feedbacks with crops was problematic. Contributing to the PUB issue, more general conclusions are drawn concerning spatially-distributed structural information and uncalibrated modelling.Key words eco-hydrological modelling; Prediction in Ungauged Basins (PUB); model coupling; semi-arid; rural Expérience de jaugeage d'un bassin versant non jaugé: évaluation rapide des données et modélisation éco-hydrologique dans un bassin versant rural pauvre en données Résumé Nous avons mené une expérience de prévision en bassin non jaugé (PUB) en nous intéressant à l'hydrologie et la dynamique des cultures dans le bassin versant rural semi-aride Mod en Inde. L'expérience a été menée dans le but (a) de développer un modèle éco-hydrologique couplé capable d'analyser les stratégies d'utilisation des terres concernant les besoin en eau des cultures, la protection contre l'érosion, le rendement des cultures et la résistance aux sécheresses et aux inondations, et (b) d'évaluer la faisabilité d'une stratégie de collecte des données nécessaires à une région pauvre en données. Notre expérience a combiné l'évaluation de données rares et le couplage de modèles éco-hydrologiques à petite méso-échelle. La liaison d'un échantillonnage ascendant de classes de sols fonctionnellement représentatives et sa régionalisation descendante sur la base de ses propriétés spectrales a permis d'obtenir une base de données distribuées complète pour le modèle. Cela a pu être réalisé en se concentrant sur les processus dominants et la catena organisant le paysage dans le contexte environnemental étudié. Nous avons utilisé le modèle WASA (Water Ava...

show abstract

Automated catena‐based discretization of landscapes for the derivation of hydrological modelling units

Cited by 36 publications

References 8 publications

Attribution of streamflow trends in snow and glacier melt‐dominated catchments of the Tarim River, Central Asia

Attribution of streamflow trends in snow and glacier melt‐dominated catchments of the Tarim River, Central Asia

Modelling spatio-temporal patterns of sediment yield and connectivity in a semi-arid catchment with the WASA-SED model

An experiment to gauge an ungauged catchment: rapid data assessment and eco-hydrological modelling in a data-scarce rural catchment

Contact Info

Product

Resources

About