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Complex networks for streamflow dynamics

This study introduces the theory of networks, and in particular complex networks, to examine connections in streamflow dynamics. Monthly streamflow data from a network of 639 stations in the United States are studied. The connections are examined primarily using the concept of clustering coefficient, which quantifies the network’s tendency to cluster. The clustering coefficient analysis is performed with several different threshold levels based on correlations in streamflow between the stations.

Historical impact of water infrastructure on water levels of the Mekong River and the Tonle Sap system

This paper analyses the historical water levels of the Mekong River and Tonle Sap system by comparing pre- and post-1991 daily observations from six stations along the Mekong mainstream from Chiang Saen (northern Thailand), to Stung Treng (Cambodia), and the Prek Kdam station on the Tonle Sap River.

Analytical approach for predicting fresh water discharge in an estuary based on tidal water level observations

In this study, the authors investigate the influence of river discharge on tidal wave propagation in the Yangtze estuary with specific attention to residual water level slope.

Integrated assessment of global water scarcity over the 21st century under multiple climate change mitigation policies

Water scarcity conditions over the 21st century both globally and regionally are assessed in the context of climate change and climate mitigation policies, by estimating both water availability and water demand within the Global Change Assessment Model, a leading community-integrated assessment model of energy, agriculture, climate, and water.

On the future of journal publications in hydrology

A group of editors from hydrology journals discusses a number of actions to help strengthen publications and research in hydrology as a whole.

Impact of modellers’ decisions on hydrological a priori predictions

Researchers report the discharge predictions of 10 modellers – using the model of their choice – for the man-made Chicken Creek catchment (6 ha, northeast Germany) and analyse how well they improved their prediction in three steps based on adding information prior to each following step.

A general framework for understanding the response of the water cycle to global warming over land and ocean

In an attempt to develop a simple framework for local-scale analysis we found that the climate model output shows a remarkably close relation to the long-standing Budyko framework of catchment hydrology.

Ensemble projections of future streamflow droughts in Europe

This paper addresses the issue of future developments in streamflow drought characteristics across Europe.

Quantifying mesoscale soil moisture with the cosmic-ray rover

This paper explores the challenges and opportunities for mapping soil moisture over large areas using the cosmic-ray rover.

Statistical analysis to characterize transport of nutrients in groundwater near an abandoned feedlot

Surface water from a lagoon and groundwater samples from 17 wells within and near an abandoned feedlot in northwestern Minnesota, USA, were analyzed for carbon, nutrients, and field parameters.

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