气候变化领域集成服务门户(CCPortal): Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene

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DOI	10.1007/s00382-021-05669-0
	Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene
	Helama S.; Stoffel M.; Hall R.J.; Jones P.D.; Arppe L.; Matskovsky V.V.; Timonen M.; Nöjd P.; Mielikäinen K.; Oinonen M.
发表日期	2021
ISSN	0930-7575
起始页码	1303
结束页码	1316
卷号	56 期号:2021-11-12
英文摘要	Holocene climate variability is punctuated by episodic climatic events such as the Little Ice Age (LIA) predating the industrial-era warming. Their dating and forcing mechanisms have however remained controversial. Even more crucially, it is uncertain whether earlier events represent climatic regimes similar to the LIA. Here we produce and analyse a new 7500-year long palaeoclimate record tailored to detect LIA-like climatic regimes from northern European tree-ring data. In addition to the actual LIA, we identify LIA-like ca. 100–800 year periods with cold temperatures combined with clear sky conditions from 540 CE, 1670 BCE, 3240 BCE and 5450 BCE onwards, these LIA-like regimes covering 20% of the study period. Consistent with climate modelling, the LIA-like regimes originate from a coupled atmosphere–ocean–sea ice North Atlantic-Arctic system and were amplified by volcanic activity (multiple eruptions closely spaced in time), tree-ring evidence pointing to similarly enhanced LIA-like regimes starting after the eruptions recorded in 1627 BCE, 536/540 CE and 1809/1815 CE. Conversely, the ongoing decline in Arctic sea-ice extent is mirrored in our data which shows reversal of the LIA-like conditions since the late nineteenth century, our record also correlating highly with the instrumentally recorded Northern Hemisphere and global temperatures over the same period. Our results bridge the gaps between low- and high-resolution, precisely dated proxies and demonstrate the efficacy of slow and fast components of the climate system to generate LIA-like climate regimes. © 2021, The Author(s).
英文关键词	Atlantic meridional overturning circulation; East Atlantic pattern; Little Ice Age; Paleoclimatology; Tree ring; Volcanic forcing
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183262
作者单位	Natural Resources Institute Finland, Ounasjoentie 6, Rovaniemi, 96200, Finland; Climate Change Impacts and Risks in the Anthropocene (C-CIA), Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland; dendrolab.Ch, Department of Earth Sciences, University of Geneva, Geneva, Switzerland; Department F.-A. Forel for Environmental and Aquatic Sciences, University of Geneva, Geneva, Switzerland; School of Geography and Lincoln Centre for Water and Planetary Health, University of Lincoln, Lincoln, United Kingdom; Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, United Kingdom; Laboratory of Chronology, Finnish Museum of Natural History, University of Helsinki, Gustaf Hällströmin Katu 2, Helsinki, 00014, Finland; Institute of Geography RAS, Staromonetniy pereulok 29, Moscow, 119017, Russian Federation; Natural Resources Institute Finland, Tietotie 2, Espoo, 02150, Finland
推荐引用方式 GB/T 7714	Helama S.,Stoffel M.,Hall R.J.,et al. Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene[J],2021,56(2021-11-12).
APA	Helama S..,Stoffel M..,Hall R.J..,Jones P.D..,Arppe L..,...&Oinonen M..(2021).Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene.Climate Dynamics,56(2021-11-12).
MLA	Helama S.,et al."Recurrent transitions to Little Ice Age-like climatic regimes over the Holocene".Climate Dynamics 56.2021-11-12(2021).