Joint ENSEMBLES RT5/RT8 Workshop on Climatic Extremes

Art Furrer Resort Hotel, Riederalp, Switzerland
January 28-31, 2009
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Rationale for the meeting

This is a follow-up workshop of several meetings that took place in Switzerland (Chateau-d’Oex 2004, 2005; Riederalp 2006, 2007). It aims to bring together scientists in the ENSEMBLES project who work on extreme events to discuss progress made in this field since the previous meetings, the most important results on extremes and remaining work on this topic.

This will be a small workshop (not a conference) with no more than 25 participants consisting mainly of scientists working on extremes in ENSEMBLES plus a few invited extremes experts. Priority will be given to scientists in ENSEMBLES who are actively working on extreme events towards ENSEMBLES deliverables. There is room for about 15 oral presentations and the opportunity to present a poster.

Principal workshop topics

Analysis of extremes in transient climate model runs (time-slices, time-varying distribution parameters);
Comparing (trends in) extremes in ERA40 driven RCM simulations with those in observed data;
Circulation patterns associated with climatic extremes;
What can we say about changes in very rare events? (e.g., a 100-year return value);
Heat waves and droughts;
Extreme precipitation and wind storms
Seasonal forecasting of extremes
Impacts and adaptation

WorkshopSynthesis Report (including program)

Click below for the r eportin pdf format


List of participants

Click below to read or download the Riederalp 2009 list of participants

Group photograph (
Taken on January 30, 2009)


Workshop Venue

Riederalp is a car-free resort in the UNESCO World Heritage "Aletsch Glacier" Region


Riederalp is a small summer and winter village in the region of the largest glacier of the European Alps, the Aletsch Glacier. It lies on a south-facing slope with spectacular views to the high summits of the Valais Alps on the other side of the Rhone Valley. It is one of about 14 Swiss resorts that are free of all road traffic.

The village is located at 1,900 altitude, and end January should be good for skiing (despite global warming!), with ski runs reaching above 2,500 m. You can check out the webcams; click on "Talstation" for the village webcam and "Moosfluh" for the webcam at the top of the ski-runs.