The Extreme Precipitation Change Characteristics of the Source Area of the Middle Route of South-North Water Transfer Project

摘要: Abstract Extreme precipitation indices were defined and analyzed in order to estimate the impacts of global climate change on water source area middle route South-North Water Transfer Project. Researches extreme intensity events show a general increasing trend while no obvious found frequency events. The Mann-Kendall test results indicate all three indices’ time series suffered an abrupt late 20th century after that, becomes more frequent with larger intensity.