摘要
文章利用季风强度指数研究了近４０年冬季１月份东亚季风强度趋势、年际、十年际变化特征及其与我国冬季天气气候的关系．结果指出，东亚冬季风的年际变化、年代际变化与我国冬季天气气候关系密切．弱冬季风时，我国天气气候是暖、湿；强冬季风时，则冷、干．但是，季风与我国气候在近４０年中的趋势变化关系则不如其年际、十年际变化更密切．近４０年来，我国冬季气温已明显升高，季风减弱，但不太显著．８０年代中期开始，冬季风已明显减弱．此外，还指出，东亚强冬季风时，大气环流具有强ＷＰ型、弱ＥＵ遥相关型的特征．
Utilizing the East Asian monsoon intensity indexes the features of their trend,interannual and interdecadal changes of the monsoon in January during the period of 1950￣1989 and their relation to the China's winter weather-climate are studied.It is found that the interannual and interdecadal changes of the East Asian winter monsoon were closely related to the weather in China.It was cold/dry when the winter monsoon was strong,and warm/moist weather when the monsoon was weak.However,the relationship between the monsoon and China's climate change trend was not as good as that of the interannual and interdecadal changes.During the past 40 years,the air temperature experienced a remarkable increase,while the monsoon underwent a pronounced reduction.Since the mid-1980s,however,the winter monsoon has become rather weakened.It is also found that when the East Asian winter monsoon was strong,the atmospheric circulation showed the strong WP pattern and the EU teleconnection pattern.
出处
《应用气象学报》
CSCD
北大核心
1996年第2期175-182,共8页
Journal of Applied Meteorological Science
基金
国家自然科学基金
关键词
气候变化
年际变化
遥相关型
季风
东亚季风
East Asian winter monsoon
Climate change
Interdecadal change
Teleconnection pattern
