气候变化领域集成服务门户(CCPortal): Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era

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DOI	10.1029/2020GL087237
	Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era
	Muñoz S.E.; Porter T.J.; Bakkelund A.; Nusbaumer J.; Dee S.G.; Hamilton B.; Giosan L.; Tierney J.E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	Floods and droughts in the Mississippi River basin are perennial hazards that cause severe economic disruption. Here we develop and analyze a new lipid biomarker record from Horseshoe Lake (Illinois, USA) to evaluate the climatic conditions associated with hydroclimatic extremes that occurred in this region over the last 1,800 years. We present geochemical proxy evidence of temperature and moisture variability using branched glycerol dialkyl glycerol tetraethers (brGDGTs) and plant leaf wax hydrogen isotopic composition (δ2Hwax) and use isotope-enabled coupled model simulations to diagnose the controls on these proxies. Our data show pronounced warming during the Medieval era (CE 1000–1,600) that corresponds to midcontinental megadroughts. Severe floods on the upper Mississippi River basin also occurred during the Medieval era and correspond to periods of enhanced warm-season moisture. Our findings imply that projected increases in temperature and warm-season precipitation could enhance both drought and flood hazards in this economically vital region. ©2020. The Authors.
英文关键词	Biomarkers; Drought; Floods; Glycerol; Hazards; Isotopes; Moisture; Watersheds; Climatic conditions; Geochemical proxies; Hydroclimatic variability; Hydrogen isotopic composition; Mississippi River Basin; Moisture variability; Upper Mississippi; Warm season precipitation; Rivers; biomarker; drought stress; hydrogen isotope; hydrometeorology; isotopic composition; lipid; Medieval Warm Period; paleoclimate; proxy climate record; Horseshoe Lake; Illinois; Mississippi Basin; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170213
作者单位	Department of Marine and Environmental Sciences, Marine Science Center, Northeastern University, Nahant, MA, United States; Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, United States; Department of Geography, University of Toronto, Mississauga, ON, Canada; Climate and Global Dynamics Laboratory, NCAR, Boulder, CO, United States; Department of Earth, Environmental, and Planetary Sciences, William Marsh Rice University, Houston, TX, United States; Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Geosciences, University of Arizona, Tucson, AZ, United States
推荐引用方式 GB/T 7714	Muñoz S.E.,Porter T.J.,Bakkelund A.,et al. Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era[J],2020,47(12).
APA	Muñoz S.E..,Porter T.J..,Bakkelund A..,Nusbaumer J..,Dee S.G..,...&Tierney J.E..(2020).Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era.Geophysical Research Letters,47(12).
MLA	Muñoz S.E.,et al."Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era".Geophysical Research Letters 47.12(2020).