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dc.contributor.authorHeeter, Karen J.
dc.contributor.authorHarley, Grant L.
dc.contributor.authorMaxwell, Justin T.
dc.contributor.authorWilson, Rob J.
dc.contributor.authorAbatzoglou, John T.
dc.contributor.authorRayback, Shelly A.
dc.contributor.authorRochner, Maegen L.
dc.contributor.authorKitchens, Katherine A.
dc.identifier.citationHeeter , K J , Harley , G L , Maxwell , J T , Wilson , R J , Abatzoglou , J T , Rayback , S A , Rochner , M L & Kitchens , K A 2021 , ' Summer temperature variability since 1730 CE across the low-to-mid latitudes of western North America from a tree ring blue intensity network ' , Quaternary Science Reviews , vol. 267 , 107064 .
dc.identifier.otherPURE: 275306883
dc.identifier.otherPURE UUID: 611f4a75-1592-4e9d-afcb-50773dbde931
dc.identifier.otherRIS: urn:7A8CF8A78E3018A497EF27213EBD2724
dc.identifier.otherScopus: 85111337494
dc.identifier.otherORCID: /0000-0003-4486-8904/work/98196429
dc.identifier.otherWOS: 000689254600002
dc.descriptionThis project was supported by the National Science Foundation under BCS- 2012482, BCS-1759694, and AGS-2002524, the United States Forest Service, the University of Idaho, and Indiana University Institute for Advanced Studies.en
dc.description.abstractRegional reconstructions of air temperature over the past millennium provide critical context for ongoing climate change, but they are temporally limited in the recent period or absent for many parts of the world. We demonstrate the use of latewood blue intensity (LWB) to reconstruct current-year growing (warm) season maximum temperatures (Tmax) in the low-to-mid latitudes (30°-50°N) of western North America. We present a new tree ring network comprised of 26 LWB chronologies developed from living, high-elevation Engelmann spruce (Picea engelmannii Parry ex Engelm.) sampled across the western United States. The LWB parameter shows strong, positive (r = 0.65–0.73), and temporally-stable correlations with growing season Tmax. From this network we present 4 regional Tmax reconstructions, which characterize regional temperature histories across western North America from northern Mexico to southern British Columbia over the past 4 centuries. Our comparison of these 4 temperature reconstructions highlights the spatial patterns of regional temperature trends throughout time. These reconstructions provide important updates and increased data point density to the tree ring temperature proxy network of the Northern Hemisphere. We highlight the use of blue intensity methods at both low- and mid-latitude upper tree line locations to increase the presence of strongly temperature-sensitive records at increasingly lower latitudes of the Northern Hemisphere.
dc.relation.ispartofQuaternary Science Reviewsen
dc.rightsCopyright © 2021 Elsevier Ltd. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectClimate changeen
dc.subjectLatewood blue intensityen
dc.subjectTemperature reconstructionen
dc.subjectGE Environmental Sciencesen
dc.subjectSDG 13 - Climate Actionen
dc.titleSummer temperature variability since 1730 CE across the low-to-mid latitudes of western North America from a tree ring blue intensity networken
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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