History / Scope of IWAIS

Historical Background

This Workshop is the thirteenth in the series, and the first to be held in Switzerland.

It will be held together with the Final Workshop of the COST Action 727 "Measuring and forecasting atmospheric icing on structures".

Previous Workshops have been held at:

  • 1982 Hanover, USA
  • 1984 Trondheim, Norway
  • 1986 Vancouver, Canada
  • 1988 Paris, France
  • 1990 Tokyo, Japan
  • 1993 Budapest, Hungary
  • 1996 Saguenay, Canada
  • 1998 Reykjavik, Iceland
  • 2000 Chester, England
  • 2002 Brno, Czech Republik
  • 2005 Montreal, Canada
  • 2007 Yokohama, Japan

Workshop Objectives

The IWAIS meeting provides a worldwide communication platform for researchers dealing with icing phenomena and their consequences.

Icing on structures is a natural atmospheric phenomenon and a key factor when planning infrastructures, such as overhead power lines, wind turbines, meteorological stations or cable cars in arctic or mountainous regions. Detailed knowledge on frequency and duration of icing events as well as maximum ice loads are crucial parameters for the design of such structures. Insufficient investigations and knowledge on that issue may result in tower collapses combined with regional power outage (overhead power lines), losses in power production (wind turbines), turn-down of transport installations (cable cars) or corrupt measurement data (meteorological stations).

The resulting effect of icing on structures may induce losses in billions of dollars by provoking extended system failures affecting human activities in tragic circumstances. Researches in the fields of measurements and forecasts of icing events will yield practical solutions to protect lives and strategic infrastructures.

The workshop will focus on field and laboratory research, meteorological studies, modeling and simulations of icing, the physics of ice and monitoring related to the effects of atmospheric icing on structures. Newest development and applications of instrumentation and equipments for ice measurements, ice prevention and de-icing facilities will be presented, together with the validation of the most modern achievements in the field of modeling and forecasting of icing events. Typical topics of the workshop are:

  • The effects of icing on telecommunication networks, overhead powerlines, meteorological instruments, wind turbines etc.
  • Icing climates, icing maps (available products, new methods)
  • Icing measurements (available instruments, field experience)
  • Meteorological measurements under icing conditions
  • Planning and operation of wind turbines under icing conditions
  • Methods for prevention of ice accretion (anti-icing) and removal of ice (de-icing)
  • Ice shedding and ice throw from structures (wind turbines, power lines)
  • Icing forecasts, numerical weather models
  • Design of structures exposed to icing, mechanical effects of ice accumulation on structures
  • Monitoring strategies for different applications
  • Analysis of ice storms, analysis of meteorological situations, damage incurred
  • Dynamic behavior of ice- and snow-covered structures and equipments and damage analysis
  • Electrical characteristics of ice and snow, flashover of ice- and snow-covered insulators

The purpose of the present workshop is to promote scientific and technical information exchanges among researches dealing with the effects of icing on utilities, industries, meteorological services, research laboratories and universities.