Frequency of extreme high temperature days in China,1961-2003

【摘要】：正Extreme weather and climate events have received much attention in the last few years, due to the large loss of human life and increasing financial costs often associated with them(Karl and Easterling,1999).Therefore, detection of changes in the frequency of these events has been one of the main themes of current climate research,especially under global warming scenarios.However, trends in the frequency of these events are quite diverse,both spatially and temporally (a brief review can be found in Easterling et al.,2000).Among extreme climate events,