Evaluation of multidecadal and longer-term temperature changes since 850 CE based on Northern Hemisphere proxy-based reconstructions and model simulations

doi:10.1007/s11430-019-9607-x

	Evaluation of multidecadal and longer-term temperature changes since 850 CE based on Northern Hemisphere proxy-based reconstructions and model simulations
	Wang, Jianglin 1; Yang, Bao 1,2; Zheng, Jingyun 3; Zhang, Xuezhen 3; Wang, Zhiyuan 4; Fang, Miao 5; Shi, Feng 6,7; Liu, Jingjing 1
刊名	SCIENCE CHINA-EARTH SCIENCES
	2020-05-14
页码	18
关键词	Temperature changes Multidecadal and longer-term variability Northern Hemisphere Last millennium
ISSN号	1674-7313
DOI	10.1007/s11430-019-9607-x
通讯作者	Yang, Bao(yangbao@lzb.ac.cn)
英文摘要	The temperature variability over multidecadal and longer timescales (e.g., the cold epochs in the late 15th, 17th, and early 19th centuries) is significant and dominant in the millennium-long, large-scale reconstructions and model simulations; however, their temporal patterns in the reconstructed and simulated temperature series are not well understood and require a detailed assessment and comparison. Here, we compare the reconstructed and simulated temperature series for the Northern Hemisphere (NH) at multidecadal and longer-term timescales (>30 years) by evaluating their covariance, climate sensitivity and amplitude of temperature changes. We found that covariances between different reconstructions or between reconstructions and simulations are generally high for the whole period of 850-1999 CE, due to their similar long-term temporal patterns. However, covariances between different reconstructions or between reconstructions and simulations steadily decline as time series extends further back in time, becoming particularly small during Medieval times. This is related to the large uncetainties in the reconstructions caused by the decreased number of proxy records and sample duplication during the pre-instrumental periods. Reconstructions based solely on tree-ring data show higher skill than multiproxy reconstructions in capturing the amplitude of volcanic cooling simulated by models. Meanwhile, climate models have a shorter recovery (i.e., lag) in response to the cooling caused by volcanic eruptions and solar activity minima, implying the lack of some important feedback mechanisms between external forcing and internal climate processes in climate models. Amplitudes of temperature variations in the latest published tree-ring reconstructions are comparable to those of the multiproxy reconstructions. We found that the temperature difference between the Medieval Climate Anomaly (950-1250 CE) and the Little Ice Age (1450-1850 CE) is generally larger in proxy-based reconstructions than in model simulations, but the reason is unclear.
资助项目	National Key R&D Program of China[2017YFA0603302] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41602192] ; National Natural Science Foundation of China[41977383] ; Belmont Forum ; JPI-Climate, Collaborative Research Action INTEGRATE[41661144008] ; Youth Innovation Promotion Association Foundation of the Chinese Academy of Sciences[2018471] ; National Natural Science Foundation[41901095] ; National Natural Science Foundation[41877440] ; Opening Fund of Key Laboratory of Desert and Desertification, Chinese Academy of Sciences[KLDD-2019-04]
WOS关键词	PAST 2000 YEARS ; LAST MILLENNIUM ; SURFACE-TEMPERATURE ; CLIMATE VARIABILITY ; TIBETAN PLATEAU ; LARGE-SCALE ; ICE-AGE ; ATLANTIC CLIMATE ; MEAN TEMPERATURE ; EASTERN CHINA
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000533046800001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Belmont Forum ; JPI-Climate, Collaborative Research Action INTEGRATE ; Youth Innovation Promotion Association Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation ; Opening Fund of Key Laboratory of Desert and Desertification, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159758]
专题	中国科学院地理科学与资源研究所
通讯作者	Yang, Bao
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100049, Peoples R China 4.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Zhejiang, Peoples R China 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, Lanzhou 730000, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 7.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianglin,Yang, Bao,Zheng, Jingyun,et al. Evaluation of multidecadal and longer-term temperature changes since 850 CE based on Northern Hemisphere proxy-based reconstructions and model simulations[J]. SCIENCE CHINA-EARTH SCIENCES,2020:18.
APA	Wang, Jianglin.,Yang, Bao.,Zheng, Jingyun.,Zhang, Xuezhen.,Wang, Zhiyuan.,...&Liu, Jingjing.(2020).Evaluation of multidecadal and longer-term temperature changes since 850 CE based on Northern Hemisphere proxy-based reconstructions and model simulations.SCIENCE CHINA-EARTH SCIENCES,18.
MLA	Wang, Jianglin,et al."Evaluation of multidecadal and longer-term temperature changes since 850 CE based on Northern Hemisphere proxy-based reconstructions and model simulations".SCIENCE CHINA-EARTH SCIENCES (2020):18.