气候变化领域集成服务门户(CCPortal): Unexpected climate variability inferred from a 380-year tree-ring earlywood oxygen isotope record in the Karakoram, Northern Pakistan

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DOI	10.1007/s00382-021-05736-6
	Unexpected climate variability inferred from a 380-year tree-ring earlywood oxygen isotope record in the Karakoram, Northern Pakistan
	Zhu, Haifeng; Huang, Ru; Asad, Fayaz; Liang, Eryuan; Braeuning, Achim; Zhang, Xuezhen; Dawadi, Binod; Man, Wenmin; Griessinger, Jussi
通讯作者	Zhu, HF (通讯作者)
发表日期	2021
ISSN	0930-7575
EISSN	1432-0894
起始页码	701
结束页码	715
卷号	57 期号:3-4
英文摘要	To provide a long-term context for understanding the Karakoram Anomaly in recent glacier studies, we originally aimed to develop an annually resolved multi-century winter-spring precipitation record using tree-ring earlywood cellulose delta O-18 (delta O-18(EW)) of Pinus wallachina from the Karakoram, northern Pakistan. Out of expectation, winter (January-May) temperature rather than precipitation is found to be the dominant climate signal (r = 0.63, p < 0.01, 1955-2013) stored in the delta O-18(EW) chronology. Precipitation signals mainly appear at high-frequency variations, but weaker than temperature signal. We reconstructed January-May temperature back to 1631 with an explained variance of 39.7 % during the calibration period of 1955-2013. The reconstruction reveals that the Little Ice Age (LIA) was 0.94 degrees C warmer during 1647-1746 than the twentieth century (1900-1999). These warmer conditions are additionally validated by ice-core delta O-18 data from the Kunlun Mountains of High Asia and the northern North America. The eastward Polar Vortex and enhanced mid-latitude Westerlies on the Euro-Asia continent may be a possible explanation of a spatial coherency of LIA temperature between the Karakoram and the northern North America. Although not the original aim of this study, we provide evidence that the attribution of anomalous behavior of Karakoram glaciers in a long-term context may be misled when using precipitation reconstructions derived from tree-ring oxygen isotope.
英文关键词	Oxygen isotopes; Winter‐ spring temperature reconstruction; Little Ice Age; Tree‐ rings; Karakoram
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000631329800001
来源期刊	CLIMATE DYNAMICS
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/260474
推荐引用方式 GB/T 7714	Zhu, Haifeng,Huang, Ru,Asad, Fayaz,et al. Unexpected climate variability inferred from a 380-year tree-ring earlywood oxygen isotope record in the Karakoram, Northern Pakistan[J]. 中国科学院青藏高原研究所,2021,57(3-4).
APA	Zhu, Haifeng.,Huang, Ru.,Asad, Fayaz.,Liang, Eryuan.,Braeuning, Achim.,...&Griessinger, Jussi.(2021).Unexpected climate variability inferred from a 380-year tree-ring earlywood oxygen isotope record in the Karakoram, Northern Pakistan.CLIMATE DYNAMICS,57(3-4).
MLA	Zhu, Haifeng,et al."Unexpected climate variability inferred from a 380-year tree-ring earlywood oxygen isotope record in the Karakoram, Northern Pakistan".CLIMATE DYNAMICS 57.3-4(2021).