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An Analysis of Forest Fire Occurrence Hazards by Changing Temperature and Humidity of Ten-day Intervals for 30 Years in Spring  

Won, Myoung-Soo (Division of Forest Fire, Korea Forest Research Institute)
Koo, Kyo-Sang (Division of Forest Fire, Korea Forest Research Institute)
Lee, Myung-Bo (Division of Forest Fire, Korea Forest Research Institute)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.8, no.4, 2006 , pp. 250-259 More about this Journal
Abstract
This study looks into forest fire occurrence hazards according to the change of temperature and humidity over thirty years at interval of ten days. We used data from the forest fire inventory from 1995 to 2004 and weather data such as average temperature and relative humidity for 30 years from 1971 to 2000. These data were expressed as a database with ten-day intervals for 76 weather stations. Forest fire hazards occurred in the spring season from the end of March to the middle of April. For the first step, the primitive surface of temperature and humidity was interpolated by IDW (the standard interpolation method). These thematic maps have a 1 km by 1 km grid spacing resolution. Next, we executed a simple regression analysis after extracting forest fire frequency, temperature and humidity values from 76 weather stations. The results produced a coefficient of determination ($R^2$) ranging from 0.4 to 0.6. Moreover, the estimation of forest fire occurrence hazards during early April was very high at Gyeongbuk Interior, Chungcheong Interior and part of Gangwon. The range of temperature and humidity having an influence on forest fire occurrence was as follows: average temperature and relative humidity in early April was $9-12^{\circ}C$ and 61-65%. At the end of March, temperature was $6-10^{\circ}C$, humidity 62-67%, and temperature was $11-14^{\circ}C$ and humidity 60-67% in the middle of April.
Keywords
Forest fire; Forest fire occurrence hazards; Spring; Temperature and humidity; IDW; Regression analysis; GIS;
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