Study on Estimation Model of Wire Icing Thickness in Hunan Province

Based on the daily meteorological data from the 97 observation stations(28 with wire icing observation) in Hunan province from their establishment to 2008,part of the wire icing data from the stations at Xuefeng and Dongshan mountain,the NCEP/NCAR reanalysis data and geographic information data,the influence of such environmental factors as meteorological elements,vertical structure of temperature and the geographic information on the thickness of wire icing was analyzed.By using the stepwise regression method,a regression model between wire icing thickness and environmental factors was established.Based on the statistical testing of the regression model,comparisons between this model and other two related models were carried out.Results show that the new model is valid.