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Category: hydrologic models

HEPEX Advances and Applications at MODSIM

HEPEX Advances and Applications at MODSIM

At the 23rd International Congress on Modelling and Simulation (MODSIM2019), from 1-6 December 2019 in Canberra, Australia, a HEPEX session highlighted recent work in hydrometeorological forecasting. Seline Ng from CSIRO discusses HEPEX highlights from MODSIM2019: We are glad to report that our session titled “Advances and applications in hydrometeorological forecasting” at the recent MODSIM2019 conference in Canberra, Australia went well, with a strong showing by the Australian Bureau of Meteorology (BOM), CSIRO Land & Water and University of Melbourne. Ours…

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Satellite inspired hydrology in an uncertain future – a joint H SAF and HEPEX workshop

Satellite inspired hydrology in an uncertain future – a joint H SAF and HEPEX workshop

When: 25-28 November 2019 Where: ECMWF , Reading, UK Five years ago, H SAF and HEPEX organised a joint workshop on “Coupled hydrology” at ECMWF, and now it is time to revisit the subject. Last time around the workshop was split into first an H SAF part, followed by a joint session and finished with a HEPEX workshop. This time the idea is to have joint sessions all through the workshop to further the collaboration between the two communities and…

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Lessons from calibrating a global flood forecasting system

Lessons from calibrating a global flood forecasting system

Contributed by Feyera Hirpa, University of Oxford. Hydrological models are key tools for predicting flood disasters several days ahead of their occurrence. However, their usability as a decision support tool depends on their skill in reproducing the observed streamflow. The forecast skill is subject to a cascade of uncertainties originating from errors in the models’ structure, parametrization, initial conditions and meteorological forcing. The Global Flood Awareness System (GloFAS) is an operational flood forecasting system that produces ensemble streamflow forecasts with…

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Nice hydrographs for everyone, from everyone: Introducing eWaterCycle II

Nice hydrographs for everyone, from everyone: Introducing eWaterCycle II

Contributed by Rolf Hut, TU Delft. “Nice hydrographs! Can you now compare your model to ‘that other hydrology groups model’?” The PhD student suppresses the urge to roll her eyes. Her supervisor is asking her to go back into code-hell. That other model is written in Fortran and she works in Python. It took her two months to get the Python model used in her group running in the first place. Realizing she needed to install an obtuse library on…

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How writing an article can come out of the blue (KGE on log-transformed flows: a bad idea?)

How writing an article can come out of the blue (KGE on log-transformed flows: a bad idea?)

Contributed by Léonard Santos (Irstea, France). It is common to read articles in which the Kling and Gupta Efficiency (KGE, Gupta et al., 2009) or its modified version (KGE’, Kling et al., 2012) are used as a metric to evaluate the quality of streamflow simulations. They are often seen as a solution to substitute the Nash and Sutcliffe Efficiency (NSE, Nash and Sutcliffe, 1970). However, are these two criterion totally comparable? Can the KGE be used exactly in the same…

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