With the observation data of geostationary satellite MTSAT of Japan and the report on typhoons released by Fujian Meteorology Bureau of China, this paper studies three typhoons in 2008: Fung Wong (0808), Sinlaku (0813), Hagupit(0814). The area index, center brightness temperature index, minimum brightness temperature index are defined to study the relationship with typhoon intensity. The data of MTSAT infrared channel(10.8μm, IR1 )and the water vapor channel(6.7μm, WV)adopted in the research was got by human-computer interaction. It is shown that the area index of the IR1 brightness temperature is closely related to the intensity evolution when the typhoon is intensifying. The change of IR1 center brightness temperature has the same trend with the change of intensity for intense typhoon. The IR1 minimum brightness temperature index decreases rapidly when typhoon weakens. The area index of IR1 and WV difference(IRWV)has the same trend with the IR1 center brightness temperature index,but the amplitude of IRWV area index is larger when typhoon weakens. By the research of this paper,some quantitative analysis data can be provided for the study on the evolution of typhoon intensity. In the actual meteorological operations,it, so these indices would be helpful in the estimation of typhoon intensity and its e volution.
国家科技期刊平台
NSTL
维普
万方数据
