Simulated European stalagmite record and its relation to a quasi-decadal climate mode

被引：6

作者：

Lohmann, G. ^{[1
]}

Wackerbarth, A. ^{[2
]}

Langebroek, P. M. ^{[1
,4
]}

Werner, M. ^{[1
]}

Fohlmeister, J. ^{[2
]}

Scholz, D. ^{[3
]}

Mangini, A. ^{[2
]}

机构：

[1] Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany

[2] Heidelberg Acad Sci, D-69120 Heidelberg, Germany

[3] Johannes Gutenberg Univ Mainz, Inst Geowissensch, D-55128 Mainz, Germany

[4] Bjerknes Ctr Climate Res, Bergen, Norway

来源：

CLIMATE OF THE PAST | 2013年 / 9卷 / 01期

关键词：

NORTH-ATLANTIC OSCILLATION; SEA-SURFACE TEMPERATURE; CAVE DRIP WATER; ATMOSPHERIC CIRCULATION; OXYGEN ISOTOPES; PROXY DATA; PALAEO-CLIMATE; VARIABILITY; PRECIPITATION; SPELEOTHEMS;

D O I：

10.5194/cp-9-89-2013

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A synthetic stalagmite delta O-18 record for the Bunker Cave (51 degrees N, 7 degrees E) is constructed using a combined climate-stalagmite modelling approach where we combine an atmospheric circulation model equipped with water isotopes and a model simulating stalagmite calcite delta O-18 values. Mixing processes in the soil and karst above the cave represent a natural low-pass filter of the speleothem climate archive. Stalagmite delta O-18 values at Bunker Cave lag the regional surface climate by 3-4 yr. The power spectrum of the simulated speleothem calcite delta O-18 record has a pronounced peak at quasi-decadal time scale, which is associated with a large-scale climate variability pattern in the North Atlantic. Our modelling study suggests that stalagmite records from Bunker Cave are representative for large-scale teleconnections and can be used to obtain information about the North Atlantic and its decadal variability.

引用

页码：89 / 98

页数：10