The "Hockey Stick" Imprint in Northwest African Speleothems

doi:10.1029/2021GL094232

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	The "Hockey Stick" Imprint in Northwest African Speleothems
	Sha, Lijuan 1; Brahim, Yassine Ait 2; Wassenburg, Jasper A.3,4; Yin, Jianjun 5; Lu, Jiayu 1; Cruz, Francisco W.6; Cai, Yanjun 1; Edwards, R. Lawrence 7; Cheng, Hai 1,5,8
刊名	GEOPHYSICAL RESEARCH LETTERS
	2021-09-16
卷号	48 期号:17 页码:11
关键词	speleothems Hockey Stick Northwest Africa global warming SST upwelling
ISSN号	0094-8276
DOI	10.1029/2021GL094232
通讯作者	Sha, Lijuan(shalijuan@xjtu.edu.cn) ; Cheng, Hai(cheng021@xjtu.edu.cn)
英文摘要	We present absolutely dated speleothem delta O-18 records spanning the past similar to 1.5 kyr, which provide new evidence of the transmission of an anthropogenic signal to natural climatic archives in NW Africa. Combined with three other speleothem delta O-18 records from SW Morocco, the results indicate unprecedentedly dry conditions during the 20th century, which developed more rapidly than those during the Medieval Climate Anomaly (900-1350 CE), likely due to rising atmospheric CO2 levels. The 20th century drying evident in the speleothem records is consistent with the "Hockey Stick" pattern of increasing temperatures due to global warming. We demonstrate that this rapid drying is linked to warmer sea surface temperatures (SSTs) over the Azores High region, and cooler local SSTs off the coast of NW Africa. These changes intensified the Canary Current Upwelling, which promoted increased biological productivity in the surface water and enhanced the coastal fishing industry in Morocco.
资助项目	NSFC[41888101] ; NSFC[41731174] ; NSFC[41561144003] ; Institute for Basic Science (IBS), Republic of Korea[IBS-R028-Y2] ; FAPESP[2017/50085-3]
WOS关键词	NORTHERN-HEMISPHERE TEMPERATURE ; STABLE-ISOTOPE VARIATIONS ; ATLANTIC OSCILLATION ; WINTER TEMPERATURES ; CLIMATE-CHANGE ; TRACE-ELEMENT ; RECONSTRUCTION ; MOROCCO ; VARIABILITY ; RECORDS
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000694653200011
资助机构	NSFC ; Institute for Basic Science (IBS), Republic of Korea ; FAPESP
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/16981]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Sha, Lijuan; Cheng, Hai
作者单位	1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China 2.Univ Basel, Dept Environm Sci, Basel, Switzerland 3.Inst Basic Sci, Ctr Climate Phys, Busan, South Korea 4.Pusan Natl Univ, Busan, South Korea 5.Chinese Acad Geol Sci, Key Lab Karst Dynam, MNR & Guangxi, Inst Karst Geol, Guilin, Peoples R China 6.Sao Paulo, Inst Geociencias Univ, Sao Paulo, Brazil 7.Univ Minnesota, Dept Earth Sci, Minneapolis, MN USA 8.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian, Peoples R China
推荐引用方式 GB/T 7714	Sha, Lijuan,Brahim, Yassine Ait,Wassenburg, Jasper A.,et al. The "Hockey Stick" Imprint in Northwest African Speleothems[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(17):11.
APA	Sha, Lijuan.,Brahim, Yassine Ait.,Wassenburg, Jasper A..,Yin, Jianjun.,Lu, Jiayu.,...&Cheng, Hai.(2021).The "Hockey Stick" Imprint in Northwest African Speleothems.GEOPHYSICAL RESEARCH LETTERS,48(17),11.
MLA	Sha, Lijuan,et al."The "Hockey Stick" Imprint in Northwest African Speleothems".GEOPHYSICAL RESEARCH LETTERS 48.17(2021):11.