About Hepex Workshops
Announcements
Test Beds
HEPEX WIKI
HEPEX Documents and Resources
Contacts

Announcements:
1. A Special Topics Workshop on Downscaling of Atmospheric Forecasts for Hydrologic Predition will be held June 15-18, 2009 in Toulouse France.  More information is available at the following website:  http://www.meteo.fr/cic/meetings/HEPEX09/. Contact John Schaake (john.schaake@noaa.gov) for additional information.  Announcement

Travel support opportunity for workshop: The U.S. National Science Foundation has sponsored a limited number of awards to support participation in the workshop by young scientists (graduate students, post-doctoral research associates or Assistant Professors in the first three years of their first faculty appointment) who are affiliated with institutions in the United States.   Futher information and the application form can be downloaded here: Travel Support Application 

Applications for travel support must be received no later than 30 April 2009.  Applications should be emailed to Eric Wood efwood@princeton.edu


2. There will be a session relating to the "Ensemble Representation of Rainfall Observation and Analysis Uncertainty" testbed held at the 2009 EGU General Assembly, Vienna, Austria on Tuesday 21st April.  For details please see: http://meetingorganizer.copernicus.org/EGU2009/session/571. 

3. An EGU Townhall Metting will be held at 19:00-20:00 on Wednesday 22nd April to discuss the inception of the HEPEX "Ensemble Representations of Rainfall Observation and Analysis Uncertainty" testbed project. This will take place in Meeting Room 7 of the Austria Center (the EGU venue). Anyone interested in this topic is cordially invited to participate.

About HEPEX

The Hydrologic Ensemble Prediction EXperiment (HEPEX) is an international effort that brings together hydrological and meteorological communities from around the globe to build a research project focused on advancing probabilistic hydrologic forecast techniques. The HEPEX mission is to demonstrate how to produce reliable hydrological ensemble predictions that can be used with confidence by emergency management and water resources sectors to make decisions that have important consequences for economy, public health and safety.

HEPEX Science Questions

The key science issue for HEPEX is reliable quantification of hydrologic forecast uncertainty. HEPEX plans to address the following key questions:

    * What are the adaptations required for meteorological ensemble systems to be coupled with hydrological ensemble systems?
    * How should the existing hydrological ensemble prediction systems be modified to account for all sources of uncertainty within a forecast?
    * What is the best way for the user community to take advantage of ensemble forecasts?

HEPEX Testbeds

A HEPEX Test Bed is a setting for HEPEX-community experiments.  A test bed could be a single basin (and its subbasins), a region containing multiple basins, or possibly a global collection of basins that facilitate experiments addressing questions over a range of scales and climates.  Regardless of geographical domain, test beds focus on one or more clearly defined HEPEX science questions, have the potential to develop data resources needed for community experiments to address the questions, and are expected to include active user participation.   Proposals for eight test bed projects were presented at the second HEPEX workshop.  (link to test bed pages)

HEPEX Participation

Participation in HEPEX is open to anyone wishing to contribute to its objectives. Individuals interested in becoming involved in HEPEX can do so as a member of the HEPEX Science Steering Group, User Council, or an affiliated international organization, or through participation in the HEPEX projects and activities. Primary leadership of the HEPEX project will be the responsibility of the science steering group. The User Council will oversee HEPEX activities. Scientists and users will formulate projects and activities to assure that user needs, as well as science issues, are addressed. HEPEX activities will include test beds, intercomparison experiments, workshops, and meetings.

Current list of HEPEX Committees


For more information about HEPEX, please contact:


For comments or questions about this website, please contact: Kristie Franz: kfranz@iastate.edu

This website is being hosted by the Center for Hydrometeorology and Remote Sensing, University of California, Irvine  

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sp; (Last Revised March 2009)