气候变化领域集成服务门户(CCPortal): Tree ring-reconstructed late summer moisture conditions, 1546 to present, northern Lake Michigan, USA

CCPortal

DOI	10.3354/cr01637
	Tree ring-reconstructed late summer moisture conditions, 1546 to present, northern Lake Michigan, USA
	Warner S.M.; Jeffries S.J.; Lovis W.A.; Arbogast A.F.; Telewski F.W.
发表日期	2021
ISSN	0936-577X
卷号	83
英文摘要	Drought can affect even humid regions like northeastern North America, which experienced significant, well-documented dry spells in the 1930s, 50s, 60s, and 80s, and proxies tell us that in the years before instrumentally recorded climate, droughts could be even more severe. To get a more complete picture of pre-recorded climate, the spatial coverage of proxy-based climate reconstructions must be extended. This can better put in context past, current, and future climate, and it can lend anthropological and historical insights. With regard to tree rings as climate proxies, however, there is increasing evidence that relationships between tree growth and climate can be inconsistent over time, in some cases decreasing the utility of tree rings in the representation of climate. We developed a chronology from white cedar Thuja occidentalis tree ring widths for the period 1469−2015 C.E. with which we modeled the relationship between growth and July−September moisture conditions (Palmer Z index). The relationship was consistent across the period of instrumentally recorded climate, 1895−present, and the model explained 27% of variability. Therefore, we used the model to reconstruct July−September moisture conditions from 1546−2014. We found the most variable century to be the 20th, the least the 18th. The severest decade-scale droughts (≤0.75 SD from mean) occurred in the 1560s, 1600s/10s, 1630s, 1770s/80s, 1840s, and 1910s/20s, the severest pluvials (≥0.75 SD) in the 1610s/20s, 1660s/70s, and the 1970s/80s. The occasional occurrence of severe droughts throughout the reconstruction, increasing variability in the 20th century, and expected climate change-enhanced late summer drought, portend a future punctuated with severe droughts. © Inter-Research 2021 · www.int-res.com
英文关键词	Dendroclimatology; Drought reconstruction; Great Lakes climate; Lake Michigan climate; Moisture reconstruction; Thuja occidentalis dendrochronology; Tree ring reconstruction; White cedar dendrochronology
来源期刊	Climate Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183804
作者单位	Ecology, Evolution, and Behavior Program, Department of Plant Biology, Michigan State University, East Lansing, MI 48824, United States; Department of Anthropology, Michigan State University, East Lansing, MI 48824, United States; Michigan State University Museum, Michigan State University, East Lansing, MI 48824, United States; Department of Geography, Environment and Spatial Sciences, Michigan State University, East Lansing, MI 48824, United States; W. J. Beal Botanical Garden, Michigan State University, East Lansing, MI 48824, United States
推荐引用方式 GB/T 7714	Warner S.M.,Jeffries S.J.,Lovis W.A.,et al. Tree ring-reconstructed late summer moisture conditions, 1546 to present, northern Lake Michigan, USA[J],2021,83.
APA	Warner S.M.,Jeffries S.J.,Lovis W.A.,Arbogast A.F.,&Telewski F.W..(2021).Tree ring-reconstructed late summer moisture conditions, 1546 to present, northern Lake Michigan, USA.Climate Research,83.
MLA	Warner S.M.,et al."Tree ring-reconstructed late summer moisture conditions, 1546 to present, northern Lake Michigan, USA".Climate Research 83(2021).