Abstract : 3K.17
Towards a method for estimating the risk of wet snow icing in mountainous regions

Haraldur Ólafsson, Hálfdán Ágústsson, Ólafur Rögnvaldsson, Árni Jón Elíasson
Bergen School of Meteorology, Geophysical Inst. University of Bergen and University of Iceland

By the use of high-resolution numerical modeling, the potential for wet snow icing is mapped in a mountainous region in North-Iceland. The process of mapping the wet snow icing potential is as follows:

a) The relative frequency of wind directions when there is risk of wet snow icing is established from observations

b) Winds and precipitation pattern are simulated for typical values of static stability in strong winds from different directions

c) The wet snow icing potential is mapped for each wind direction, based on a) and b)

d) The wet snow potential for individual power lines is estimated from the orientation of the power line and the maps in c)