摘要
运用小波分析方法对近５０年来东亚季风的年际和年代际变化特征进行了分析。运用相关分析方法研究了东亚冬、 夏季风对中国西北地区气温和降水的影响．结果表明， 东亚季风对西北地区干旱形成的影响是显著的。对季风形成前期东亚大陆地面气温和太平洋海表温度进行了分析， 结果指出： 前期东亚大陆陆面和太平洋洋面的热力状况会影响到东亚季风的强弱， 陆面和洋面的温差越大季风会越强， 反之则会越弱， 季风的强弱反过来又会影响陆面和洋面的热状况。
Wavelet technique is used to analyses the variability of East－Asian monsoon in recent 50 years. Correlationanalysis method is used to investigate the impact of the East－Asian winter monsoon and summer monsoon impact on the temperature and precipitation of Northwest China. The results show that the influence of East－Asian monsoon on the drought formation of Northwest China is significant. The surface temperature of East－Asian continent and Pacific SSTpreceding the East－Asian winter and summer monsoonare studied, the result suggests that the East－Asian monsoon intensity is closely related to the precedingthermal status of East－Asian continent and Pacific SST, the bigger the temperature gradient between continent and ocean, the stronger the East－Asian monsoon, and vice versa. On the contrary, monsoon intensity can also influence the thermal status of the continent and ocean.
出处
《高原气象》
CSCD
北大核心
2002年第2期193-198,共6页
Plateau Meteorology
基金
国家"九五"重中之重项目(96-908-05-03)课题资助
