摘要
分析了安图红松树轮碳同位素和与之临近的敦化市气象站气象记录间的相关关系,发现树轮碳同位素与上年5～7月平均低云量间存在显著的负相关关系,重建了该区近200年来5～7月平均低云量变化。功率谱分析表明,δ13C序列、重建的低云量序列均包含明显的厄尔尼诺-南方涛动周期(ENSO)和准2年振荡周期(QBO),反映了ENSO以及东亚季风对该区气候的影响。
The relationship between δ13C of tree ring cellulose in Antu and climatic station records is analyzed. Significant negative correlation is discovered between δ13C and the average low cloud amount of May to July, and that in Antu in the recent 200 years is reconstructed. Periods of quasi 4 year related to the El Nino/southern oscillation (ENSO) phenomenon and quasi 2 year related to the Quasi biennial oscillation (QBO) of the East Asian monsoon are worked out at significant level of 95%by power spectrum analysis of both δ13C series and the reconstructed average low cloud amount level, which reflects the influence of both ENSO and the east Asian monsoon on Antu climate.
出处
《地球化学》
CAS
CSCD
北大核心
2002年第4期309-314,共6页
Geochimica
基金
国家自然科学基金重点项目(49733130)
关键词
红松树轮
碳同位素
低云量
气候重建
ENSO
QBO
安图县
古气候
厄尔尼诺
tree ring
δ^(13)C record
low cloud amount
climatic reconstruction
El Nino southern oscillation
quasi biennial oscillation
Antu County
