气候变化领域集成服务门户(CCPortal): Seasonal imprint of Holocene temperature reconstruction on the Tibetan Plateau

CCPortal

DOI	10.1016/j.earscirev.2022.103927
	Seasonal imprint of Holocene temperature reconstruction on the Tibetan Plateau
	Zhang, Can; Zhao, Cheng; Yu, Shi-Yong; Yang, Xiangdong; Cheng, Jun; Zhang, Xiaojian; Xue, Bin; Shen, Ji; Chen, Fahu
通讯作者	Zhao, C (通讯作者)
发表日期	2022
ISSN	0012-8252
EISSN	1872-6828
卷号	226
英文摘要	The Tibetan Plateau (TP) is one of the most sensitive areas to global climate changes. Quantitative paleotemperature reconstructions on the TP since the Last Deglaciation provide a prominent opportunity not only for assessing the position, but also for better understanding the mechanism of recent warming. In this study, we first present a well-dated, high-resolution (similar to 70 years), ice-free-season temperature (from March to October, TM-O) record over the past 19 ka from a small alpine lake on the southeastern TP based on brGDGT proxy. Our reconstructed TM-O record displays a long-term similar to 4 degrees C warming trend during the past 19 ka with a deglacial increase of similar to 3 ?degrees C and Holocene increase of similar to 1 ?degrees C. To better understand the pattern and mechanism of post glacial temperature changes on the TP, we review 16 published paleotemperature records since the Last Deglaciation. The results show a general warming pattern during the Last Deglaciation but divergent trends of seasonal temperatures during the Holocene with a gradual cooling pattern in summer temperature, an overall warming pattern in winter temperature, annual temperature, and TM-O as well as a warming-cooling-warming pattern in TMJJAS (temperature from May to September). Data-model comparison indicates that the long-term warming trend in deglacial temperatures are primarily driven by rising atmospheric greenhouse gases (GHGs) on the TP. In contrast, Holocene temperature changes are mainly controlled by local seasonal insolation and additional radiative forcing of GHGs on the TP, thereby resulting in divergent patterns of seasonal temperature changes. Our study highlights the necessity of taking into account the seasonal bias when reconstructing temperatures, especially in high latitudes and high altitudes where the freezing occurs.
关键词	DIALKYL GLYCEROL TETRAETHERS CHAIN ALKENONE DISTRIBUTIONS SUMMER TEMPERATURE MONSOON PRECIPITATION CLIMATE VARIABILITY SOUTHWESTERN CHINA LAKE POLLEN CALIBRATION SEDIMENTS
英文关键词	Seasonal temperature; Holocene; Tibetan Plateau; Insolation; Greenhouse gas forcing
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000786666000002
来源期刊	EARTH-SCIENCE REVIEWS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260705
推荐引用方式 GB/T 7714	Zhang, Can,Zhao, Cheng,Yu, Shi-Yong,et al. Seasonal imprint of Holocene temperature reconstruction on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,226.
APA	Zhang, Can.,Zhao, Cheng.,Yu, Shi-Yong.,Yang, Xiangdong.,Cheng, Jun.,...&Chen, Fahu.(2022).Seasonal imprint of Holocene temperature reconstruction on the Tibetan Plateau.EARTH-SCIENCE REVIEWS,226.
MLA	Zhang, Can,et al."Seasonal imprint of Holocene temperature reconstruction on the Tibetan Plateau".EARTH-SCIENCE REVIEWS 226(2022).