Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-016-3360-8 |
Coherency of late Holocene European speleothem delta O-18 records linked to North Atlantic Ocean circulation | |
Deininger, Michael1; McDermott, Frank1,2; Mudelsee, Manfred3,4; Werner, Martin4; Frank, Norbert5; Mangini, Augusto5 | |
2017-07-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; Germany |
英文摘要 | Speleothem delta O-18 records provide valuable information about past continental environmental and climatic conditions, although their interpretation is often not straightforward. Here we evaluate a compilation of late Holocene speleothem delta O-18 records using a Monte Carlo based Principal Component Analysis (MC-PCA) method that accounts for uncertainties in individual speleothem age models and for the variable temporal resolution of each delta O-18 record. The MC-PCA approach permits not only the identification of temporally coherent changes in speleothem delta O-18; it also facilitates their graphical depiction and evaluation of their spatial coherency. The MC-PCA method was applied to 11 Holocene speleothem delta O-18 records that span most of the European continent (apart from the circum-Mediterranean region). We observe a common (shared) mode of speleothem delta O-18 variability that suggests millennial-scale coherency and cyclicity during the last 4.5 ka. These changes are likely caused by variability in atmospheric circulation akin to that associated with the North Atlantic Oscillation, reflecting meridionally shifted westerlies. We argue that these common large-scale variations in European speleothem delta O-18 records are in phase with changes in the North Atlantic Ocean circulation indicated by the vigour of the Iceland Scotland Overflow Water (ISOW), the strength of the subpolar gyre (SPG) and an ocean stacked North Atlantic ice rafted debris (IRD) index. Based on a recent modelling study, we conclude that these changes in the North Atlantic circulation history may be caused by wind stress on the ocean surface driven by shifted westerlies. However, the mechanisms that ultimately force the westerlies remain unclear. |
英文关键词 | Speleothems Spatio-temporal coherency Palaeoclimate dynamics Subpolar gyre ISOW Westerlies |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403716500034 |
WOS关键词 | CLIMATE VARIABILITY ; STALAGMITE RECORD ; ISOTOPE FRACTIONATION ; MODERN CALIBRATION ; STABLE-ISOTOPES ; TIME-SERIES ; OSCILLATION ; TEMPERATURE ; CALCITE ; PRECIPITATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35984 |
专题 | 气候变化 |
作者单位 | 1.Univ Coll Dublin, UCD Sch Earth Sci, Dublin 4, Ireland; 2.Univ Coll Dublin, UCD Earth Inst, Dublin 4, Ireland; 3.Kreuzstr 27, D-37581 Bad Gandersheim, Germany; 4.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Bussestr 24, D-27570 Bremerhaven, Germany; 5.Heidelberg Univ, Inst Environm Phys, Neuenheimer Feld 229, D-69120 Heidelberg, Germany |
推荐引用方式 GB/T 7714 | Deininger, Michael,McDermott, Frank,Mudelsee, Manfred,et al. Coherency of late Holocene European speleothem delta O-18 records linked to North Atlantic Ocean circulation[J]. CLIMATE DYNAMICS,2017,49. |
APA | Deininger, Michael,McDermott, Frank,Mudelsee, Manfred,Werner, Martin,Frank, Norbert,&Mangini, Augusto.(2017).Coherency of late Holocene European speleothem delta O-18 records linked to North Atlantic Ocean circulation.CLIMATE DYNAMICS,49. |
MLA | Deininger, Michael,et al."Coherency of late Holocene European speleothem delta O-18 records linked to North Atlantic Ocean circulation".CLIMATE DYNAMICS 49(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论