干旱区生态环境知识资源中心(Arid): Seasonal and synoptic climatic drivers of tree growth in the Bighorn Mountains, WY, USA (1654-1983 CE)

Arid

DOI	10.1016/j.dendro.2019.125633
	Seasonal and synoptic climatic drivers of tree growth in the Bighorn Mountains, WY, USA (1654-1983 CE)
	Hudson, Amy R.; Alfaro-Sanchez, Raquel; Babst, Flurin; Belmecheri, Soumaya; Moore, David J. P.; Trouet, Valerie
通讯作者	Hudson, AR (corresponding author), Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA.
来源期刊	DENDROCHRONOLOGIA
ISSN	1125-7865
EISSN	1612-0051
出版年	2019
卷号	58
英文摘要	In the United States' (US) Northern Rockies, synoptic pressure systems and atmospheric circulation drive interannual variation in seasonal temperature and precipitation. The radial growth of high-elevation trees in this semi-arid region captures this temperature and precipitation variability and provides long time series to contextualize instrumental-era variability in synoptic-scale climate patterns. Such variability in climate patterns can trigger extreme climate events, such as droughts, floods, and forest fires, which have a damaging impact on human and natural systems. We developed 11 tree-ring width (TRW) chronologies from multiple species and sites to investigate the seasonal climatic drivers of tree growth in the Bighorn Mountains, WY. A principal component analysis of the chronologies identified 54% of shared common variance (1894-2014). Tree growth (expressed by PC1) was driven by multiple seasonal climate variables: previous October and current July temperatures, as well as previous December and current April precipitation, had a positive influence on growth, whereas growth was limited by July precipitation. These seasonal growth-climate relationships corresponded to circulation patterns at higher atmospheric levels over the Bighorn Mountains. Tree growth was enhanced when the winter jet stream was in a northward position, which led to warmer winters, and when the spring jet stream was further south, which led to wetter springs. The second principal component, explaining 19% of the variance, clustered sites by elevation and was strongly related to summer temperature. We leverage this summer temperature signal in our TRW chronologies by combining it with an existing maximum latewood density (MXD) chronology in a nested approach. This allowed us to reconstruct Bighorn Mountains summer (June, July, and August) temperature (BMST) back to 1654, thus extending the instrumental temperature record by 250 years. Our BMST reconstruction explains 39-53% of the variance in regional summer temperature variability. The 1830s were the relatively coolest decade and the 1930s were the warmest decade over the reconstructed period (1654-1983 CE) - which excludes the most recent 3 decades. Our results contextualize recent drivers and trends of climate variability in the US Northern Rockies, which contributes to the information that managers of human and natural systems need in order to prepare for potential future variability.
英文关键词	Ring width Maximum latewood density Bighorn Mountains, Wyoming Picea engelmannii Pinus contorta Pseudotsuga rnenziesii
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000510464700009
WOS关键词	TEMPERATURE RECONSTRUCTION ; VOLCANIC-ERUPTIONS ; SUMMER TEMPERATURE ; RING-WIDTH ; WEATHER ; DENDROCLIMATOLOGY ; PRECIPITATION ; AMPLIFICATION ; VARIABILITY ; MILLENNIUM
WOS类目	Forestry ; Geography, Physical
WOS研究方向	Forestry ; Physical Geography
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369769
作者单位	[Hudson, Amy R.; Moore, David J. P.; Trouet, Valerie] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA; [Hudson, Amy R.; Alfaro-Sanchez, Raquel; Babst, Flurin; Belmecheri, Soumaya; Trouet, Valerie] Univ Arizona, Lab Tree Ring Res, Tucson, AZ 85721 USA; [Alfaro-Sanchez, Raquel] CREAF, E-08193 Bellaterra, Cerdanyola De V, Spain; [Babst, Flurin] Swiss Fed Res Inst WSL, Birmensdorf, Switzerland; [Babst, Flurin] Polish Acad Sci, W Szafer Inst Bot, Dept Ecol, Warsaw, Poland
推荐引用方式 GB/T 7714	Hudson, Amy R.,Alfaro-Sanchez, Raquel,Babst, Flurin,et al. Seasonal and synoptic climatic drivers of tree growth in the Bighorn Mountains, WY, USA (1654-1983 CE)[J]. University of Arizona,2019,58.
APA	Hudson, Amy R.,Alfaro-Sanchez, Raquel,Babst, Flurin,Belmecheri, Soumaya,Moore, David J. P.,&Trouet, Valerie.(2019).Seasonal and synoptic climatic drivers of tree growth in the Bighorn Mountains, WY, USA (1654-1983 CE).DENDROCHRONOLOGIA,58.
MLA	Hudson, Amy R.,et al."Seasonal and synoptic climatic drivers of tree growth in the Bighorn Mountains, WY, USA (1654-1983 CE)".DENDROCHRONOLOGIA 58(2019).