Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era

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dc.citation.articleNumbere2020GL087237en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitleGeophysical Research Lettersen_US
dc.citation.volumeNumber47en_US
dc.contributor.authorMuñoz, Samuel E.en_US
dc.contributor.authorPorter, Trevor J.en_US
dc.contributor.authorBakkelund, Aleeshaen_US
dc.contributor.authorNusbaumer, Jesseen_US
dc.contributor.authorDee, Sylvia G.en_US
dc.contributor.authorHamilton, Brynnydden_US
dc.contributor.authorGiosan, Liviuen_US
dc.contributor.authorTierney, Jessica E.en_US
dc.date.accessioned2020-11-17T15:11:45Zen_US
dc.date.available2020-11-17T15:11:45Zen_US
dc.date.issued2020en_US
dc.description.abstractFloods 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.en_US
dc.identifier.citationMuñoz, Samuel E., Porter, Trevor J., Bakkelund, Aleesha, et al.. "Lipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Era." <i>Geophysical Research Letters,</i> 47, no. 12 (2020) Wiley: https://doi.org/10.1029/2020GL087237.en_US
dc.identifier.doihttps://doi.org/10.1029/2020GL087237en_US
dc.identifier.urihttps://hdl.handle.net/1911/109560en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsThis 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.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleLipid Biomarker Record Documents Hydroclimatic Variability of the Mississippi River Basin During the Common Eraen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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