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dc.contributor.authorMuñoz, Samuel E.
Porter, Trevor J.
Bakkelund, Aleesha
Nusbaumer, Jesse
Dee, Sylvia G.
Hamilton, Brynnydd
Giosan, Liviu
Tierney, Jessica E.
dc.date.accessioned 2020-11-17T15:11:45Z
dc.date.available 2020-11-17T15:11:45Z
dc.date.issued 2020
dc.identifier.citation Muñoz, Samuel E., Porter, Trevor J., Bakkelund, Aleesha, et al.. "Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era." Geophysical Research Letters, 47, no. 12 (2020) Wiley: https://doi.org/10.1029/2020GL087237.
dc.identifier.urihttps://hdl.handle.net/1911/109560
dc.description.abstract 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.
dc.language.iso eng
dc.publisher Wiley
dc.rights This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.title Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era
dc.type Journal article
dc.citation.journalTitle Geophysical Research Letters
dc.citation.volumeNumber 47
dc.citation.issueNumber 12
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1029/2020GL087237
dc.type.publication publisher version
dc.citation.articleNumber e2020GL087237


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