globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-014-2082-z
Scopus记录号: 2-s2.0-84905108104
论文题名:
Seychelles coral record of changes in sea surface temperature bimodality in the western Indian Ocean from the Mid-Holocene to the present
作者: Zinke J.; Pfeiffer M.; Park W.; Schneider B.; Reuning L.; Dullo W.-C.; Camoin G.F.; Mangini A.; Schroeder-Ritzrau A.; Garbe-Schönberg D.; Davies G.R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期:2017-03-04
起始页码: 689
结束页码: 708
语种: 英语
英文关键词: Climate model ; Corals ; Mid to late Holocene ; Oxygen isotopes ; Sea surface temperatures ; Seasonality ; Sr/Ca ; Western Indian Ocean
英文摘要: We report fossil coral records from the Seychelles comprising individual time slices of 14-20 sclerochronological years between 2 and 6.2 kyr BP to reconstruct changes in the seasonal cycle of western Indian Ocean sea surface temperature (SST) compared to the present (1990-2003). These reconstructions allowed us to link changes in the SST bimodality to orbital changes, which were causing a reorganization of the seasonal insolation pattern. Our results reveal the lowest seasonal SST range in the Mid-Holocene (6.2-5.2 kyr BP) and around 2 kyr BP, while the highest range is observed around 4.6 kyr BP and between 1990 and 2003. The season of maximum temperature shifts from austral spring (September to November) to austral autumn (March to May), following changes in seasonal insolation over the past 6 kyr. However, the changes in SST bimodality do not linearly follow the insolation seasonality. For example, the 5.2 and 6.2 kyr BP corals show only subtle SST differences in austral spring and autumn. We use paleoclimate simulations of a fully coupled atmosphere-ocean general circulation model to compare with proxy data for the Mid-Holocene around 6 kyr BP. The model results show that in the Mid-Holocene the austral winter and spring seasons in the western Indian Ocean were warmer while austral summer was cooler. This is qualitatively consistent with the coral data from 6.2 to 5.2 kyr BP, which shows a similar reduction in the seasonal amplitude compared to the present day. However, the pattern of the seasonal SST cycle in the model appears to follow the changes in insolation more directly than indicated by the corals. Our results highlight the importance of ocean-atmosphere interactions for Indian Ocean SST seasonality throughout the Holocene. In order to understand Holocene climate variability in the countries surrounding the Indian Ocean, we need a much more comprehensive analysis of seasonally resolved archives from the tropical Indian Ocean. Insolation data alone only provides an incomplete picture. © 2014 Springer-Verlag Berlin Heidelberg.
资助项目: AIMS, Commonwealth Scientific and Industrial Research Organisation ; CSIRO, Commonwealth Scientific and Industrial Research Organisation ; DFG, Commonwealth Scientific and Industrial Research Organisation ; UWA, Commonwealth Scientific and Industrial Research Organisation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54499
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: UWA Oceans Institute, School of Earth and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia; Australian Institute of Marine Science, 39 Fairway, Nedlands, WA, 6009, Australia; RWTH Aachen, Wuellnerstrasse2, 52056 Aachen, Germany; GEOMAR Helmholtz Centre for Ocean Research Kiel, Duesternbrooker Weg 20, 24105 Kiel, Germany; Institute of Geosciences, University of Kiel, Ludewig-Meyn Strasse 10, 24118 Kiel, Germany; GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstr. 1-3, 24148 Kiel, Germany; CEREGE UMR 6635 CNRS, Europole Méditerranéen de l'Arbois BP 80, 13545 Aix-en-Provence Cedex, France; Heidelberger Akademie der Wissenschaften, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany; VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands

Recommended Citation:
Zinke J.,Pfeiffer M.,Park W.,et al. Seychelles coral record of changes in sea surface temperature bimodality in the western Indian Ocean from the Mid-Holocene to the present[J]. Climate Dynamics,2014-01-01,43(2017-03-04)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zinke J.]'s Articles
[Pfeiffer M.]'s Articles
[Park W.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zinke J.]'s Articles
[Pfeiffer M.]'s Articles
[Park W.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zinke J.]‘s Articles
[Pfeiffer M.]‘s Articles
[Park W.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.