摘要
厄尔尼诺-南方涛动(ENSO)常引起大气环流的改变并导致气候的异常变动。研究区域气候变化与ENSO之间的相互关系,有助于了解区域水文等各要素的变化。文章基于1960—2010年青海省29个气象站点的降水、气温数据与表征ENSO的热带太平洋海表温度距平(SSTA)和南方涛动指数(SOI)资料,通过气候倾向率、Mann-Kendall突变检验、相关性检验和小波分析等方法,研究了1960—2010年青海省降水和气温的变化特征及其与ENSO的关系。结果表明,1960—2010年青海省气候趋向暖湿,且这种趋势在90年代后愈加显著。在整个时间段内,气候变化尤其是降水变化与ENSO有显著的关系。在ENSO的冷暖事件时间段内,青海省的降水与气温都与海表温度、南方涛动指数有显著的相关性。由小波分析得出,降水和气温可能都受海表温度的影响较大;ENSO事件对青海省气温变化的影响大于对青海降水的影响。
As ENSO（E1 Nino-Southern Oscillation） often leads to alteration in atmospheric circulation and further causes climatic variation, exploring the relationship between regional climate changes and ENSO is helpful for understanding the variation in regional hydrology.Based on annual and monthly precipitation and temperature data from 29 meteorological stations in Qinghai Province, and characterization of ENSO tropical Pacific sea surface temperature anomaly （SSTA） and the Southern Oscillation Index （SOI） data during 1960-2010. The methods of climate linear trend analysis,Mann-Kendall,correlation test and wavelet analysis are employed to analyze changes intemperature and precipitation, and their relationship with ENSO..The results show that the climate in Qinghai tends to be warmer and wetter during 1960-2010, and that this trend has been even more significant since the 1990s. In the entire period of time, there a hight correlation between climate changes and ENSO, especially in precipitation..In the cold event years of ENSO evens, precipitation and temperature have a great relationship with SST and SOL The study further shows that precipitation and temperature changes might be influenced by sea surface temperature by using wavelet analysis . The impacts of ENSO on temperature are more significant than the precipitation in Oimzhai province.
出处
《生态环境学报》
CSCD
北大核心
2013年第4期547-553,共7页
Ecology and Environmental Sciences
基金
国家自然科学基金项目(41262001)
甘肃省科技支撑基金项目(1104FKCA116)
甘肃省自然科学基金项目(1010RJZA020)
甘肃省高校研究生导师科研项目(1101-04)
