中文摘要：

为 1960-2011 的每日的降水和为在 549 点记录的 1960-2008 的 maximum/ 最小温度极端在中国驻扎被利用调查气候极端变化。一套索引与每日的极端出现的趋势和可变性的一个主要焦点被导出并且分析。结果在每日的极端冷温度在每日的极端温暖的温度和减少显示出重要增加，定义为每天最大的温度(Tmax ) 和每天最小的温度(Tmin ) 分别地比第 90 百分位数和不到 the10th 百分位数大的在天的数字。通常，趋势大小在从 Tmax 比那些从 Tmin 导出的索引是更大的。基于百分位数的降水索引的趋势随重降水事件的增加显示出不同空间模式，把每日的降水的第 95 百分位数定义为顶在西方、东北的中国并且在长江盆区域的低活动范围，并且在另外的区域的细微减少。轻降水，作为每天的第 5 百分位数的尾巴定义然而，降水在大多数区域减少。年度最大的连续的干燥的天(CDD ) 在南部的中国和黄河盆的中间低的活动范围显示出一个增加的趋势，当时年度最大的连续的湿天(CWD ) 显示在除了西方的中国的大多数区域上的一个落之趋势。这些索引与区域和季节显著地变化。总的来说，在中国的极端事件的出现是更经常的，特别地，在中国的夜里时间极端温度，和大陆变得更温暖、更湿。

英文摘要：

Daily precipitation for 1960-2011 and maximum/minimum temperature extremes for 1960-2008 recorded at 549 stations in China are utilized to investigate climate extreme variations.A set of indices is derived and analyzed with a main focus on the trends and variabilities of daily extreme occurrences.Results show significant increases in daily extreme warm temperatures and decreases in daily extreme cold temperatures,defined as the number of days in which daily maximum temperature （Tmax） and daily minimum temperature （Tmin） are greater than the 90th percentile and less than thel0th percentile,respectively.Generally,the trend magnitudes are larger in indices derived from Tmin than those from Tmax.Trends of percentile-based precipitation indices show distinct spatial patterns with increases in heavy precipitation events,defined as the top 95th percentile of daily precipitation,in westem and northeastern China and in the low reaches of the Yangtze River basin region,and slight decreases in other areas.Light precipitation,defined as the tail of the 5th percentile of daily precipitation,however,decreases in most areas.The annual maximum consecutive dry days （CDD） show an increasing trend in southem China and the middle-low reach of the Yellow River basin,while the annual maximum consecutive wet days （CWD） displays a downtrend over most regions except western China.These indices vary significantly with regions and seasons.Overall,occurrences of extreme events in China are more frequent,particularly the night time extreme temperature,and landmasses in China become warmer and wetter.