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Representative Direct Ensemble Uncertainty Visualizations: Conveying Uncertainty Using A Small Portion of The Data

Representative Direct Ensemble Uncertainty Visualizations: Conveying Uncertainty Using A Small Portion of The Data

Contributed by Le Liu, PhD., School of Computer Science Northwestern Polytechnical University.   As we know, ensemble approaches are widely adopted to estimate forecasts uncertainty. In atmospheric sciences, these approaches are specifically categorized into two types: multi-model ensembles and perturbed parameter ensembles. The former runs multiple numerical prediction models with the same initial parameters to estimate the atmospheric evolution, while the latter runs a single model multiple times with slightly perturbed initial conditions. They are usually combined to form the final forecast….

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Summary of H SAF-HEPEX workshop

Summary of H SAF-HEPEX workshop

by Fredrik Wetterhall, David Fairbairn and Patricia de Rosnay, ECMWF. More than a hundred modellers and satellite data specialists in the field of hydrology came together at ECMWF from 25 to 28 November to debate new ideas and deepen collaborations. The workshop on “satellite-inspired hydrology in an uncertain future” was organized jointly by the EUMETSAT Satellite Application Facility for hydrology and water management (H SAF) and the HEPEX community. The last joint H SAF/HEPEX workshop was held in 2014, so…

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EGU Twitter page

EGU Twitter page

This week, the HEPEX traveling circus will descend on Vienna, home of the annual convention of the European Geosciences Union. HEPEX-ers will be tweeting their way through the conference – and these Tweets will be assembled in below Twitter stream. Feel free to add your thoughts, ideas and observations – just make sure they’re summarized in 160 characters max – and don’t forget to include the #hepex tag! #hepex at #EGU17

Live from workshop on seasonal hydrological forecasting, Sweden

Live from workshop on seasonal hydrological forecasting, Sweden

You can follow a live report of the Seasonal Hydrological Forecasting Workshop in Norrkoping, Sweden, here.  All Tweets that include the #hepex hashtag will be displayed on this page. Feel free to contribute by Tweeting what you see and hear! The presentations (see agenda here) will also be live streamed: see instructions here! Tweets about “#hepex”

Devastating flooding in Myanmar/ Burma and Bangladesh

Devastating flooding in Myanmar/ Burma and Bangladesh

Contributed by Jutta Thielen, Annett Wania, Vera Thiemig, Xeni Kechagioglou, Ionut-Lucian, Peter Salamon, and Beatriz Revilla-Romero Following a period of unusually heavy monsoon precipitation that started in mid-July and continued into August, Myanmar/Burma and (to a lesser degree) Bangladesh experienced the most severe flooding in decades. Heavy rainfall continued during the first half of the month of August, and more rainfall is forecast. This precipitation is associated with the South-West Monsoon, which is expected to last until October. The extent…

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