||This HEPEX workshop will focus on scientific questions
concerning how atmospheric prediction systems can be used for hydrologic streamflow applications and
probabilistic quantitative precipitation forecasting. Special attention will be given to how to produce
skillful and reliable ensemble forcing for hydrologic applications using both single-value and ensemble
Topics for the workshop may include :
||(1) diagnosis of problems
with atmospheric weather and climate ensemble forecast systems (for example, bias and spread
deficiencies) and how they affect hydrologic predictions)(2) comparisons with
precipitation estimation techniques not based on ensemble forecasting (e.g.: based on deterministic
predictions or statistical interpretation)(3) methods for statistically correcting the
ensemble forecasts to provide reliable input to hydrologic models(4) novel techniques for
using ensemble input in hydrologic models(5) methods of verifying ensemble forecasts and
evaluating their effect on hydrologic prediction systems(6) requirements for new databases
and collaborative activities that will support the hydrologic prediction system development
The workshop is meant to be interdisciplinary, fostering communication between research meteorologists
and hydrologists. This contributes to the HEPEX goal of helping the hydrologic community develop
hydrologic ensemble prediction systems that can be used with confidence by emergency and water resource
The HEPEX workshop is planned to start on Monday 15 June, afternoon, and to close on
Thursday 18 June evening. Possibly it will be followed by a COST 731 meeting on Friday 19th. COST 731
is a European project dealing with the same scientific subjects.
Registration, hotel reservation
and abstract submission are available on this
Short abstracts are requested before
15 March 2009 on the above subjects (1) to (6). A preliminary programme will be available on the web
during April, and the final programme available on 15 May. The deadline for registration is also 15 May.
More information about this meeting is available on the above web, and more information about HEPEX is
available on the web site http://hydis8.eng.uci.edu/hepex/
This meeting will be a workshop for
participants to discuss science issues with each other. Although we plan to have some oral presentations
(including a few invited oral overview presentations), the primary scientific interactions will occur
at poster sessions and through break-out group discussions.
Hosted by Meteo-France and SCHAPI,
co-sponsored by CEMAGREF, COSMOLEPS, COST731, ECMWF, EDF, EU/JRC, GEO, IAHS, Meteo-France MSC, NCAR,
NOAA, SCHAPI, WCRP/GEWEX/HAP, WWRP/THORPEX.
To be held at the Conference International Centre
at Meteo-France, Toulouse, France, June 15-18, 2009.