GSTDTAP  > 气候变化
DOI10.1002/2017JD026716
Seasonal-Scale Dating of a Shallow Ice Core From Greenland Using Oxygen Isotope Matching Between Data and Simulation
Furukawa, Ryoto1; Uemura, Ryu2; Fujita, Koji3; Sjolte, Jesper4; Yoshimura, Kei5; Matoba, Sumito1; Iizuka, Yoshinori1
2017-10-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:20
文章类型Article
语种英语
国家Japan; Sweden
英文摘要

A precise age scale based on annual layer counting is essential for investigating past environmental changes from ice core records. However, subannual scale dating is hampered by the irregular intraannual variabilities of oxygen isotope (delta O-18) records. Here we propose a dating method based on matching the delta O-18 variations between ice core records and records simulated by isotope-enabled climate models. We applied this method to a new delta O-18 record from an ice core obtained from a dome site in southeast Greenland. The close similarity between the delta O-18 records from the ice core and models enables correlation and the production of a precise age scale, with an accuracy of a few months. A missing delta O-18 minimum in the 1995/1996 winter is an example of an indistinct delta O-18 seasonal cycle. Our analysis suggests that the missing delta O-18 minimum is likely caused by a combination of warm air temperature, weak moisture transport, and cool ocean temperature. Based on the age scale, the average accumulation rate from 1960 to 2014 is reconstructed as 1.02 m yr(-1) in water equivalent. The annual accumulation rate shows an increasing trend with a slope of 3.6 mm yr(-1), which is mainly caused by the increase in the autumn accumulation rate of 2.6 mm yr(-1). This increase is likely linked to the enhanced hydrological cycle caused by the decrease in Arctic sea ice area. Unlike the strong seasonality of precipitation amount in the ERA reanalysis data in the southeast dome region, our reconstructed accumulation rate suggests a weak seasonality.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000417195200018
WOS关键词DATA ASSIMILATION ; STABLE-ISOTOPES ; SURFACE SNOW ; ACCUMULATION ; PRECIPITATION ; DOME ; RECONSTRUCTION ; VARIABILITY ; ERUPTION ; SYSTEM
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/32302
专题气候变化
作者单位1.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan;
2.Univ Ryukyus, Fac Sci, Dept Chem Biol & Marine Sci, Nishihara, Okinawa, Japan;
3.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan;
4.Lund Univ, Dept Geol, Quaternary Sci, Lund, Sweden;
5.Univ Tokyo, Inst Ind Sci, Tokyo, Japan
推荐引用方式
GB/T 7714
Furukawa, Ryoto,Uemura, Ryu,Fujita, Koji,et al. Seasonal-Scale Dating of a Shallow Ice Core From Greenland Using Oxygen Isotope Matching Between Data and Simulation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(20).
APA Furukawa, Ryoto.,Uemura, Ryu.,Fujita, Koji.,Sjolte, Jesper.,Yoshimura, Kei.,...&Iizuka, Yoshinori.(2017).Seasonal-Scale Dating of a Shallow Ice Core From Greenland Using Oxygen Isotope Matching Between Data and Simulation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(20).
MLA Furukawa, Ryoto,et al."Seasonal-Scale Dating of a Shallow Ice Core From Greenland Using Oxygen Isotope Matching Between Data and Simulation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.20(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Furukawa, Ryoto]的文章
[Uemura, Ryu]的文章
[Fujita, Koji]的文章
百度学术
百度学术中相似的文章
[Furukawa, Ryoto]的文章
[Uemura, Ryu]的文章
[Fujita, Koji]的文章
必应学术
必应学术中相似的文章
[Furukawa, Ryoto]的文章
[Uemura, Ryu]的文章
[Fujita, Koji]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。