An Icing Index Comparison to Luosto Icing Measurements

Document Number: 2007-01-3305

Date Published: September 2007

Author(s):
Jarkko Hirvonen - Finnish Meteorological Institute
Kristiina Säntti - Finnish Meteorological Institute
Sami Niemelä - Finnish Meteorological Institute
Reijo Hyvönen - Finnish Meteorological Institute
Kari Ahti - Finnish Meteorological Institute
Kari Lehtinen - Finnish Meteorological Institute

Abstract:
Icing index values are compared to in-situ icing measurements. The calculation of the icing index is based on two operational NWP models' 7 to 12 hours forecast datasets. Four icing events measured at the top of the fell Luosto during winter season 2005/2006 were selected for comparison. Measured icing events and calculated icing indices are graphically compared. Subjective icing intensity has been estimated by using video camera recordings and by available meteorological data. The icing index values clearly show some ability to predict the start and end of the icing event, but they are far from perfect.

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See other papers presented at 2007 SAE Aircraft and Engine Icing International Conference, September 2007, Seville, SPAIN, Session: Icing of Structures

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