Analysis of Thunderstorm Climatic Characteristics in Sanmenxia
Abstract：Based on the 40 years observational data of thunderstorm from 1970 to 2009 in Sanmenxia, the characteristics and mutation of thunderstorm variation are analyzed by using some methods such as linear trend estimate, Mann-Kendall and wavelet analysis. The results show that the average annual thun- derstorm days in Sanmenxia is 16.5 days, high occurrence time of thunderstorm is June to August for the year and 14：00 to 21：00 for the day. Decadal linearly changes of thunderstorm days decreased and climate tendency rate is approximately 0.5/10a. Mann-Kendall test shows that thunderstorm has a decreasing tendency on the whole and no mutation. The results from wavelet analysis show that the variation period of annual thunderstorm days in Sanmenxia is about the short periods of 3 and 6 years and the long periods of 8 and 14 years, thereinto, the variation period of 6 and 8 years are the main characteristics.
Keywords：thunderstormclimatic featurelinear trend estimateMann-Kendall methodwavelet analysis
Publication Date：2012-03-14
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 73-77 )