CAJ | 학술논문

东亚夏季风变化规律和驱动机制的研究是气候研究的重要方向，对较长时间尺度上东亚夏季风的变化进行进一步分析能够提供重要线索。采用前人重建的过去2000年和尚洞高分辨率石笋氧同位素(δ18 O)记录，通过奇异谱方法分解之后进行重建，发现前4个组分重建的序列反映了百年以上尺度东亚夏季风的演化，而组分5~16重建的序列则与年代际尺度上厄尔尼诺南方涛动(El Ni n~o Southern Oscillation ENSO)的变化良好相关，反映了这一时间尺度上ENSO 对东亚夏季风的调制作用。组分5~16重建的过去2000年序列中显著的77年和44年周期可能是 ENSO 传递的太阳活动信号。
동아하계풍변화규률화구동궤제적연구시기후연구적중요방향，대교장시간척도상동아하계풍적변화진행진일보분석능구제공중요선색。채용전인중건적과거2000년화상동고분변솔석순양동위소(δ18 O)기록，통과기이보방법분해지후진행중건，발현전4개조분중건적서렬반영료백년이상척도동아하계풍적연화，이조분5~16중건적서렬칙여년대제척도상액이니낙남방도동(El Ni n~o Southern Oscillation ENSO)적변화량호상관，반영료저일시간척도상ENSO 대동아하계풍적조제작용。조분5~16중건적과거2000년서렬중현저적77년화44년주기가능시 ENSO 전체적태양활동신호。
Variance and mechanism of changes in the East Asian summer monsoon (EASM)are im-portant topics in climate study,and more researches on long-term changes in the EASM can provide use-ful information.In the present study,we use Singular Spectrum Analysis (SSA)method to decompose time-series of stalagmiteδ1 8 O in the past 2000 years,and then reconstruct centennial scale and multi-dec-adal scale time-series.The results show that the centennial scale variation indicates the evolution of the EASM,and the multi-decadal change is well correlated with the El Ni n~o Southern Oscillation (ENSO) variance.The significant 77-year and 44-year cycles in the multi-decadal time-series might be signals of solar activity transported by ENSO.