古ENSO的研究进展  

An overview of the paleo-ENSO

作　　者：闻新宇[1] 王绍武[1] 朱锦红[1] 

机构地区：[1]北京大学物理学院大气科学系,北京100871

出　　处：《地球物理学报》2007年第2期387-396,共10页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(40205011)资助

摘　　要：本文对20世纪90年代后期逐渐在古气候学、古海洋学、地质学和古生物学等跨学科交叉领域中崭露头角的热点问题——古ENSO研究的前沿进展做了系统的总结和回顾.从观测和气候模拟两方面对集中于不同时间尺度的焦点问题进行展开,主要包括如下几个时段:早-中全新世的厄尔尼诺的减弱;末次冰期中的ENSO循环及其与高纬气候的联系;以及末次间冰期的ENSO现象.其中对早-中全新世时期的ENSO减弱的相对成熟的“岁差”机制做了详细总结,而对另两个时段的矛盾和问题做了简要整理和概括.建议在今后的古ENSO研究中,除观测外,要注意提高对古ENSO进行动力模拟研究的比重,两者相互配合来增加对ENSO循环和气候背景之间相互作用机理的理解,从而为今后全球变暖背景下的ENSO预测提供有意义的借鉴.Studies on paleo-ENSO in fields of paleoclimate, paleoceanography, geology and paleobiology in recent decades were reviewed in this paper. Those works related to paleo-ENSO are reviewed in both observation and modeling studies, expecially in some specific warm or cool geological epochs, such as early-middle Holocene, Last Glacial, Last Interglacial and Eocene. Although a variety of uncertainties were still presented in paleo-ENSO research work, the mechanism for particularly weak El Nifio variability during early-middle Holocene is investigated. Moreover, the paradoxes in other periods were categorized and addressed. Paleo- ENSO studies will improve the understanding of the interaction between ENSO cycle and climatological background, and will further complete ENSO dynamics so as to predict how El Nino, the strongest signal that affects global climate on interannual time scale, will behave on the global warming background.

关 键 词：厄尔尼诺 古ENSO 古气候 全新世 冰期-间冰期旋回 

分 类 号：P532[天文地球—古生物学与地层学]