1961-2008年中国西南地区极端气候变化幅度的海拔效应(英文)

编号 zgly0001585780

文献类型 期刊论文

文献题名 1961-2008年中国西南地区极端气候变化幅度的海拔效应(英文)

作者 李宗省  何元庆  WilfredH.THEAKSTONE  王旭峰  张薇  曹伟宏  杜建扩  辛惠娟  常丽 

作者单位 StateKeyLaboratoryofCryosphereScience/YulongSnowMountainGlaciersandEnvironmentalObservationStation  ColdandAridRegionEnvironmentandEngineeringResearchInstitute  CAS  GraduateUniversityofChineseAcademyofSciences  SchoolofEnvironm 

母体文献 Journal of Geographical Sciences 

年卷期 2012年03期

年份 2012 

分类号 P467 

关键词 southwesternChina  climate  altitudedependency 

文摘内容 A total of 12 indices of temperature extremes and 11 indices of precipitation ex-tremes at 111 stations in southwestern China at altitudes of 285-4700 m were examined for the period 1961-2008. Significant correlations of temperature extremes and elevation in-cluded the trends of diurnal temperature range, frost days, ice days, cold night frequency and cold day frequency. Regional trends of growing season length, warm night frequency, coldest night and warmest night displayed a statistically significant positive correlation with altitude. These characteristics indicated the obvious warming with altitude. For precipitation extreme indices, only the trends of consecutive dry days, consecutive wet days, wet day precipitation and the number of heavy precipitation days had significant correlations with increasing alti-tude owing to the complex influence of atmospheric circulation. It also indicated the increased precipitation mainly at higher altitude areas, whereas the increase of extreme precipitation events mainly at lowers altitude. In addition, the clearly local influences are also crucial on climate extremes. The analysis revealed an enhanced sensitivity of climate extremes to ele-vation in southwestern China in the context of recent warming.