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Stochastic Spatial Disaggregation of Extreme Precipitation to Vali...

By: A. N. Rousseau; P. Gagnon

Description: Institut National de la Recherche Scientifique, Centre eau, terre et environnement, Université du Québec, 490 rue de la Couronne, Québec city, PQ, G1K 9A9, Canada. Regional Climate Models (RCMs) are valuable tools to evaluate impacts of climate change (CC) at regional scale. However, as the size of the area of interest decreases, the ability of a RCM to simulate extreme precipitation events decreases due to the spatial resolution. Thus, it is difficult to...

Amengual, A., Homar, V., Romero, R., Alonso, S., and Ramis, C.: Projections of the climate potential for tourism at local scales: Application to Platja de Palma, Spain, Int. J. Climatol., 32, 2095–2107, 2012.; Caya, D. and Laprise, R.: A Semi-Implicit Semi-Lagrangian Regional Climate Model: The Canadian RCM, Mon. Weather Rev., 127, 341–362, 1999.; Boé, J., Terray, L., Habets, F., and Martin, E.: Statistical and dynamical downscaling of the Seine basin climate for hydro-m...

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Moving Sociohydrology Forward: a Synthesis Across Studies : Volume...

By: V. Srinivasan; M. Konar; T. J. Troy; S. Thompson

Description: Department of Civil and Environmental Engineering, Lehigh University, STEPS 9A,1 W. Packer Ave, Bethlehem, PA 18015, USA. Sociohydrology is the study of coupled human–water systems with the premise that water and human systems co-evolve, often with two-way coupling. A recent special issue in HESS/ESD, Predictions under change: water, earth, and biota in the Anthropocene, includes a number of sociohydrologic publications that allow for a survey of the cur...

Angrist, J. D. and Pischke, J.-S.: Mostly Harmless Econometrics: An Empiricist's Companion, 1st Edn., Princeton University Press, Princeton, NJ, USA, 2009.; Brázdil, R. and Kundzewicz, Z. W.: Historical hydrology, Hydrolog. Sci. J., 51, 733–738, doi:10.1623/hysj.51.5.733, 2006.; Brázdil, R., Chromá, K., Valášek, H., and Dolák, L.: Hydrometeorological extremes derived from taxation records for south-eastern Moravia, Czec...

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Hydrologic Responses of the Zwalm Catchment Using the Rew Model: I...

By: A. El Ouazzani Taibi; A. Elfeki; G. P. Zhang

Description: Deveraux & Deloitte Partnership, Environmental Expert Group, Emile Wauters Street, 121, 1020 Brussels, Belgium. The research presented in this paper focuses on an application of a newly developed physically-based watershed model approach, which is called Representative Elementary Watershed (REW) approach. The study stressed the effects of uncertainty of input parameters on the watershed responses (i.e. simulated discharges). The approach was applied to t...

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Validation of the Operational Msg-seviri Snow Cover Product Over A...

By: J. Parajka; S. Surer; Z. Akyurek

Description: Geodetic and Geographic Information Technologies, Middle East Technical University, Ankara, Turkey. The objective of this study is to evaluate the mapping accuracy of the MSG-SEVIRI operational snow cover product over Austria. The SEVIRI instrument is aboard the geostationary Meteosat Second Generation (MSG) satellite. The snow cover product provides 32 images per day, with a relatively low spatial resolution of 5 km over Austria. The mapping accuracy is...

Romanov, P., Tarpley, D., Gutman, G., and Carroll, T.: Mapping and monitoring of the snow cover fraction over North America, J. Geophys. Res., 108, 8619, doi:10.1029/2002JD003142, 2003.; Siljamo, N. and Hyvärinen, O.: New geostationary satellite-based snow-cover algorithm, J. Appl. Meteorol. Clim., 50.6, 1275–1290, doi:10.1175/2010JAMC2568.1, 2011.; Simic, A., Fernande...

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Similarity of Climate Control on Base Flow and Perennial Stream De...

By: L. Wu; D. Wang

Description: Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL 32816, USA. Connection between perennial stream and base flow at the mean annual scale exists since one of the hydrologic functions of perennial stream is to deliver runoff even in low flow seasons. The partitioning of precipitation into runoff and evaporation at the mean annual scale, on the first order, is captured by the ratio of potential evap...

Thornthwaite, C.: The climates of North America according to a new classification, Geogr. Rev., 21, 633–655, 1931.; Simley, J.: National Hydrography Dataset Newsletter, US Geological Survey Report, Vol. 6, 2007.; Abrahams, A. D.: Channel Networks: A Geomorphological Perspective, Water Resour. Res., 20, 161–188, doi:10.1029/WR020i002p00161, 1984.; Abrahams, A. D. and Ponczynksi, J. J.: Drainage density in relation to p...

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The Wageningen Lowland Runoff Simulator (Walrus): Application to t...

By: R. Uijlenhoet; P. J. J. F. Torfs; A. J. Teuling; C. C. Brauer

Description: Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, the Netherlands. The Wageningen Lowland Runoff Simulator (WALRUS) is a new parametric (conceptual) rainfall–runoff model which accounts explicitly for processes that are important in lowland areas, such as groundwater-unsaturated zone coupling, wetness-dependent flowroutes, groundwater–surface water feedbacks, and seepage and surface water supply (see companion paper by...

Alley, W. M., Healy, R. W., LaBaugh, J. W., and Reilly, T. E.: Flow and storage in groundwater systems, Science, 296, 1985–1990, 2002.; Appels, W. M., Bogaart, P. W., and van der Zee, S. E. A. T. M.: Influence of spatial variations of microtopography and infiltration on surface runoff and field scale hydrological connectivity, Adv. Water Resour., 34, 303–313, 2011.; Beljaars, A. C. M. and Bosveld, F. C.: Cabauw data for the validation of land surface parameterization sch...

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Heat Transport of Diurnal Temperature Oscillations Upon River-wate...

By: M. Schirmer; O. A. Cirpka; T. Vogt

Description: Eawag – Swiss Federal Institute of Aquatic Science and Technology, Überlandstr. 133, 8600 Dübendorf, Switzerland. River-water infiltration is of high relevance for hyporheic and riparian groundwater ecology as well as for drinking water supply by river-bank filtration. Heat has become a popular natural tracer to estimate exchange rates between rivers and groundwater. However, quantifying flow patterns and velocities is impeded by spatial and temporal var...

de Marsily, G.: Quantitative Hydrogeology, Academic Press, San Diego, California, 1986.; Carsel, R. and Parrish, R.: Developing joint probability distributions of soil water retention characteristics, Water Resour. Res., 24, 755–769, 1988.; Anderson, M. P.: Heat as a ground water tracer, Ground Water, 43, 951–968, doi:10.1111/j.1745-6584.2005.00052.x, 2005.; BAFU: Hydrologischer Atlas der Schweiz, Bundesamt f...

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Deriving a Global River Network Map and Its Sub-grid Topographic C...

By: S. Kanae; T. Oki; D. Yamazaki

Description: Institute of Industrial Science, University of Tokyo, Japan. This paper proposes an improved method for converting a fine-resolution flow direction map into a coarse-resolution river network map for use in global river routing models. The proposed method attempts to preserve the river network structure of an original fine-resolution map in the upscaling procedure, as this has not been achieved with previous upscaling methods. We describe an improved met...

Arora, V. K. and Boer, G. J.: A variable velocity flow routing algorithm for GCMs, J. Geophys. Res., 104(D24), 30965–30979, 1999.; Coe, M. T., Costa, M. H., and Howard, E. A.: Simulating the surface waters of the Amazon River basin: Impact of new river geomorphic and flow parameterizations, Hydrol. Proc., 22, 2542–2553, 2008.; Costa, M. H., Olivera, C. H. C., Andrade, R. G., Bustamante, T. R., and Silva, F. A.: A macroscale hydrological data set of river flow routing par...

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Exploratory Data Analysis and Clustering of Multivariate Spatial H...

By: V. Lobo; A. Dassargues; F. Bação; L. Peeters

Description: Applied Geology and Mineralogy, KULeuven, Belgium. The use of unsupervised artificial neural network techniques like the self-organizing map (SOM) algorithm has proven to be a useful tool in exploratory data analysis and clustering of multivariate data sets. In this study a variant of the SOM-algorithm is proposed, the GEO3DSOM, capable of explicitly incorporating three-dimensional spatial knowledge into the algorithm. The performance of the GEO3DSOM i...

Alvisi, S., Mascellani, G., Franchini, M., and Bardossy, A.: Water level forecasting through fuzzy logic and artificial neural network approaches, Hydrol. Earth Syst. Sci. 10, 1–17, 2006.; ASCE Task Committee on Application of Artificial Neural Networks in Hydrology: Artificial neural networks in hydrology. II: Hydrologic applications, J. Hydrol. Eng., 5(2), 124–137, 2000.; Baç\~ao, F., Lobo, V., and Painho, M.: The self-organizing map, the Geo-SOM, and relevant variants...

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Laboratory Evidence for Enhanced Infiltration of Ion Load During S...

By: J. W. Pomeroy; G. Lilbæk

Description: Centre for Hydrology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. Meltwater ion concentration and infiltration rate into frozen soil both decline rapidly as snowmelt progresses. Their temporal association is highly non-linear and a covariance term must be added in order to use time-averaged values of snowmelt ion concentration and infiltration rate to calculate chemical infiltration. The covariance is labelled enhanced ion infiltratio...

Gray, D. M., Granger, R. J., and Dyck, G. E.: Overwinter Soil Moisture Changes, Trans. Am. Soc. Agr. Eng., 28, 442–447, 1985.; Abrahams, P. W., Tranter, M., Davies, T. D., and Blackwood, I. L.: Geochemical Studies in a Remote Scottish Upland Catchment, 2, Streamwater Chemistry during Snow-Melt, Water Air Soil Pollut., 43, 231–248, 1989.; Alexeev, G. A., Kaljuzhny, I. J., Kulik, V. Y., Pavlova, K. K., and Romanov, V. V.: Infiltration of snowmelt water into frozen soil, In...

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New Lessons on the Sudd Hydrology Learned from Remote Sensing and ...

By: H. H. G. Savenije; W. G. M. Bastiaanssen; B. J. J. M. Van Den Hurk; Y. A. Mohamed

Description: UNESCO-IHE, P.O. Box 3015, 2601 DA Delft, The Netherlands. Despite its local and regional importance, hydro-meteorological data on the Sudd (one of Africa's largest wetlands) is very scanty. This is due to the physical and political situation of this area of Sudan. The areal size of the wetland, the evaporation rate, and the influence on the micro and meso climate are still unresolved questions of the Sudd hydrology.

The evaporation flux from t...

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Multi-model Data Fusion for River Flow Forecasting: an Evaluation ...

By: L. See; R. J. Abrahart

Description: School of Geography, University of Nottingham, Nottingham NG7 2RD. This paper evaluates six published data fusion strategies for hydrological forecasting based on two contrasting catchments: the River Ouse and the Upper River Wye. The input level and discharge estimates for each river comprised a mixed set of single model forecasts. Data fusion was performed using: arithmetic-averaging, a probabilistic method in which the best model from the last time s...

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Stream Temperature Prediction in Ungauged Basins: Review of Recent...

By: M. P. Parlange; M. Lehning; B. Schaefli; H. Huwald; A. Gallice

Description: School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Switzerland. The development of stream temperature regression models at regional scales has regained some popularity over the past years. These models are used to predict stream temperature in ungauged catchments to assess the impact of human activities or climate change on riverine fauna over large spatial areas. A comprehensive literatur...

Arscott, D. B., Tockner, K., and Ward, J.: Thermal heterogeneity along a braided floodplain river (Tagliamento River, northeastern Italy), Can. J. Fish. Aquat. Sci., 58, 2359–2373, 2001.; Aschwanden, H. and Weingartner, R.: Die Abflussregimes der Schweiz, Publikation gewässerkunde nr. 65, Geographisches Institut der Universität Bern, Bern, 1985.; Benyahya, L., Caissie, D., St-Hilaire, A., Ouarda, T. B., and Bobée, B.: A review of statistical water temperature models, Can...

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Hydrological Dynamics of Water Sources in a Mediterranean Lagoon :...

By: I. E. Gönenc; A. Ekdal; P. Maloszewski; C. Stumpp

Description: Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Groundwater Ecology, Neuherberg, Germany. Lagoons are important ecosystems occupying large coastal areas worldwide. Lagoons contain various mixtures of marine and freshwater sources which are highly dynamic in time. However, it often remains a challenge to identify and quantify dynamic changes of water sources, particularly in heterogeneous lagoon systems like ...

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Analysis of Virtual Water Flows Associated with the Trade of Maize...

By: P. J. Ashton; E. Masekoameng; J. M. Dabrowski

Description: CSIR, Natural Resources and Environment, P.O. Box 395, Pretoria, 0001, South Africa. The concept of virtual water encourages a country to view agricultural crops in terms of the amount of water required to produce those crops, with a view to implementing trading policies that promote the saving of scarce water resources. Recently, increased attention has focussed on partitioning the virtual water content of crops into green and blue water (derived from ...

% vor jede Referenz Aldaya, M. M., Hoekstra, A. Y., and Allan, J. A.: Strategic importance of green water in international trade. Value of Water Research Report Series No. 25, UNESCO-IHE, Delft, The Netherlands, 2008.; Chapagain, A. K. and Hoekstra, A. Y.: Water Footprints of Nations. Volume 2: Appendices. Value of Water Research Report Series No. 16, UNESCO-IHE, Delft, The Netherlands, 2004.; Chapagain, A. K., Hoekstra, A. Y., and Savenije, H. H. G.: Water saving throug...

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Assimilating Scatterometer Soil Moisture Data Into Conceptual Hydr...

By: G. Blöschl; W. Wagner; K. Scipal; V. Naeimi; R. Merz; J. Parajka

Description: Institute for Hydraulic and Water Resources Engineering, Vienna University of Technology, Austria. This paper examines the potential of scatterometer data from ERS satellites for improving hydrological simulations in both gauged and ungauged catchments. We compare the soil moisture dynamics simulated by a semidistributed hydrologic model in 320 Austrian catchments with the soil moisture dynamics inferred from the satellite data. The most apparent differ...

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Linking Biogeochemistry to Hydro-geometrical Variability in Tidal ...

By: G. G. Laruelle; S. Arndt; P. Regnier; C. Volta

Description: Department of Earth and Environmental Sciences, Université Libre de Bruxelles, Belgium. This study applies the Carbon-Generic Estuary Model (C-GEM) modeling platform to simulate the estuarine biogeochemical dynamics – in particular the air-water CO2 exchange – in three idealized end-member systems covering the main features of tidal alluvial estuaries. C-GEM uses a generic biogeochemical reaction network and a unique set of model paramet...

Alongi, D. M.: Coastal Ecosystem Processes, first edition, edited by: Kennish, M. J. and Lutz, P. L., CRC Mar. Sci. Ser., CRC Press, New York, 1998.; Alpine, A. E. and Cloern, J. E.: Trophic interactions and direct physical effects control phytoplankton biomass and production in an estuary, Limnol. Oceanogr., 37, 946–955, 1992.; Andersson, A. J. and Mackenzie, F. T.: Shallow-water ocean: a source or sink of atmospheric CO2?, Front. Ecol. Environ., 2, 348–353, ...

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Historical Trends in Precipitation and Stream Discharge at the Skj...

By: K. H. Jensen; T. O. Sonnenborg; J. C. Refsgaard; I. B. Karlsson

Description: Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark. A 133 yr data set from the 1055 km2 Skjern River catchment in western Denmark has been analysed with respect to precipitation, temperature, evapotranspiration and discharge. The precipitation series have been tested and corrected using the standard normal homogene...

Perry, M.: A spatial analysis of trends in the UK climate since 1914 using gridded datasets, National Climate Information Centre, Exeter, Devon, 2006.; DHI: Reference manual, DHI – Water & Environment, Hørsholm, Denmark, 2009b.; Alexanderson, H. and Moberg, A.: Homogenization of swedish temperature data. Part 1: Homogeneity Test for Linear Trends, Int. J. Climatol., 17, 25–34, 3.0.CO;2-J title= ...

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Spatial Distribution of Stable Water Isotopes in Alpine Snow Cover...

By: M. Weiler; N. Dietermann

Description: Institute of Hydrology, University Freiburg, Freiburg, Germany. The aim of this study was to analyse and predict the mean stable water isotopic composition of the snow cover at specific geographic locations and altitudes. In addition, the dependence of the isotopic composition of the entire snow cover on altitude was analysed. Snow in four Swiss catchments was sampled at the end of the accumulation period in April 2010 and a second time during snowmelt ...

Aizen, V., Aizen, E., Melack, J., and Martma, T.: Isotopic measurements of precipitation on central Asian glaciers (Southeastern Tibet, northern Himalayas, central Tien Shan), J. Geophys. Res., 101, 9185–9198, 1996.; Ambach, W., Eisner, H., and Pessl, K.: Isotopic oxygen composition of firn, old snow and precipitation in alpine regions, Z. Gletscherk. Glazialgeol., 8, 125–135, 1972.; Arnason, B., Buason, T., Martinec, J., and Theodôrsson, P.: Movement of water through a ...

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Digital Terrain Analysis of the Haute-mentue Catchment an Scale Ef...

By: C. Higy; A. Musy

Description: Soil and Water Management Institute, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland. It is widely recognised that topography plays an important role in the generation of runoff. The scale of a digital elevation model has been found to have some impacts on the results of hydrological modelling in several studies. In particular it has been shown that the representation of the statistical distribution of the topographic inde...

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