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Improving Late Glacial European tree-ring chronologies for accurate climate archive dating - Consolidation and extension of the Swiss-German pine chronology back to 14 000 BP

English title Improving Late Glacial European tree-ring chronologies for accurate climate archive dating - Consolidation and extension of the Swiss-German pine chronology back to 14 000 BP
Applicant Wacker Lukas
Number 157187
Funding scheme Project funding (Div. I-III)
Research institution Labor für Ionenstrahlphysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geochronology
Start/End 01.03.2015 - 28.02.2019
Approved amount 603'319.00
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Keywords (10)

Radiocarbon; Stable Isotopes; Palaeoclimatology; Dendrochronology; Greenland Stadial 1; Late Glacial; Early Holocene; AMS; Younger Dryas; Environmental Archive

Lay Summary (German)

Lead
Jährlich aufgelöste Jahrringchronologien sind wichtige Umweltarchive. Sie decken die meisten extratropischen Regionen unserer Erde ab und können tausende von Jahre in die Vergangenheit zurückreichen. Da die Archive jahrgenau datiert werden können, sind sie für Paläoklimatologie und Paläoökologie, aber auch für Archäologie und Radiokarbon Datierung von unschätzbarem Wert.
Lay summary

Ziel dieses Projektes ist es, die weltweit längste Jahrringchronologie welche momentan bis 12’594 Jahre vor Heute (BP) zurückreicht, lückenlos und absolut datiert um weitere rund 2'000 Jahre in den Übergang zwischen der letzten Eiszeit und dem Holozän zu verlängern. Ein neuer, bezüglich Umfang und Alter weltweit einzigartiger Fund von 257 Kiefern innerhalb der Stadt Zürich soll dieses Ziel nun ermöglichen.  

Mit vereinten Kräften einer Deutsch-Schweizer Kollaboration unter Zuhilfenahme von dendrochronologischen Jahrringbreite- und Dichtemessungen soll nicht nur die Jahrringchronologie verlängert und verbessert werden, sondern gleichzeitig auch ein  Datensatz  zeitlich hochaufgelöster Radiokarbon (¹4C) und Stabiler (δ¹³C und δ¹8O ) Isotopen generiert werden. Der Ansatz mehrere Dendro- und Isotopen Parameter gleichzeitig zu messen, soll nicht nur die Erarbeitung einer erweiterten Chronologie  unterstützen und absichern, sondern vor allem auch unser paläoklimatologisches Verständnis des Spätglazial vor und nach der Jüngeren Dryas - einer Zeit starker klimatischer Veränderungen - erweitern.

Direct link to Lay Summary Last update: 09.02.2015

Responsible applicant and co-applicants

Employees

Publications

Publication
Re-evaluation of the New Oxalic Acid standard with AMS
Wacker L., Bollhalder S., Sookdeo A., Synal H.-A. (2019), Re-evaluation of the New Oxalic Acid standard with AMS, in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and , in press.
Subfossil trees suggest enhanced Mediterranean hydroclimate variability at the onset of the Younger Dryas
Pauly Maren, Helle Gerhard, Miramont Cécile, Büntgen Ulf, Treydte Kerstin, Reinig Frederick, Guibal Frédéric, Sivan Olivier, Heinrich Ingo, Riedel Frank, Kromer Bernd, Balanzategui Daniel, Wacker Lukas, Sookdeo Adam, Brauer Achim (2018), Subfossil trees suggest enhanced Mediterranean hydroclimate variability at the onset of the Younger Dryas, in Scientific Reports, 8(1), 13980-13980.
Introducing anatomical techniques to subfossil wood
Reinig Frederick, Gärtner Holger, Crivellaro Alan, Nievergelt Daniel, Pauly Maren, Schweingruber Fritz, Sookdeo Adam, Wacker Lukas, Büntgen Ulf (2018), Introducing anatomical techniques to subfossil wood, in Dendrochronologia, 52, 146-151.
New tree-ring evidence for the Late Glacial period from the northern pre-Alps in eastern Switzerland
Reinig Frederick, Nievergelt Daniel, Esper Jan, Friedrich Michael, Helle Gerhard, Hellmann Lena, Kromer Bernd, Morganti Sandro, Pauly Maren, Sookdeo Adam, Tegel Willy, Treydte Kerstin, Verstege Anne, Wacker Lukas, Büntgen Ulf (2018), New tree-ring evidence for the Late Glacial period from the northern pre-Alps in eastern Switzerland, in Quaternary Science Reviews, 186, 215-224.
Improved recovery of ancient DNA from subfossil wood - application to the world's oldest Late Glacial pine forest
Lendvay Bertalan, Hartmann Martin, Brodbeck Sabine, Nievergelt Daniel, Reinig Frederick, Zoller Stefan, Parducci Laura, Gugerli Felix, Büntgen Ulf, Sperisen Christoph (2018), Improved recovery of ancient DNA from subfossil wood - application to the world's oldest Late Glacial pine forest, in New Phytologist, 217(4), 1737-1748.
Speed Dating: A Rapid Way to Determine the Radiocarbon Age of Wood by EA-AMS
Sookdeo Adam, Wacker Lukas, Fahrni Simon, McIntyre Cameron P, Friedrich Michael, Reinig Frederick, Nievergelt Daniel, Tegel Willy, Kromer Bernd, Büntgen Ulf (2017), Speed Dating: A Rapid Way to Determine the Radiocarbon Age of Wood by EA-AMS, in Radiocarbon, 59(3), 933-939.
Decadally Resolved Lateglacial Radiocarbon Evidence from New Zealand Kauri–CORRIGENDUM
Hogg Alan, Southon John, Turney Chris, Palmer Jonathan, Ramsey Christopher Bronk, Fenwick Pavla, Boswijk Gretel, Buntgen Ulf, Friedrich Michael, Helle Gerhard, Hughen Konrad, Jones Richard, Kromer Bernd, Noronha Amexandra, Reinig Frederick, Reynard Linda, Staff Richard, Wacker Luckas (2016), Decadally Resolved Lateglacial Radiocarbon Evidence from New Zealand Kauri–CORRIGENDUM, in Radiocarbon, 58(4), 947-947.
Punctuated Shutdown of Atlantic Meridional Overturning Circulation during Greenland Stadial 1
Hogg Alan, Southon John, Turney Chris, Palmer Jonathan, Bronk Ramsey Christopher, Fenwick Pavla, Boswijk Gretel, Friedrich Michael, Helle Gerhard, Hughen Konrad, Jones Richard, Kromer Bernd, Noronha Alexandra, Reynard Linda, Staff Richard, Wacker Lukas (2016), Punctuated Shutdown of Atlantic Meridional Overturning Circulation during Greenland Stadial 1, in Scientific Reports, 6(1), 25902-25902.
Quality Dating: A well-defined protocol for quality high-precision 14C-dates tested on Late Glacial wood
SookdeoAdam, KromerBernd, BüntgenUlf, FriedrichMichael, FriedrichRonny, HelleGerd, PaulyMaren, NievergeltDaniel, ReinigFrederick, TreydteKerstin, SynalHans-Arno, WackerLukas, Quality Dating: A well-defined protocol for quality high-precision 14C-dates tested on Late Glacial wood, in Radiocarbon.

Collaboration

Group / person Country
Types of collaboration
Jürg Beer, EAWAG Dübendorf Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Marcus Christl, ETH Zürich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Willy Tinner, OCCR and University of Bern Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Laura Parducci, University of Uppsala Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Raimund Muscheler, Lund University Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Niels Bleicher, Amt für Städtebau Zürich Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Alan Hogg, Waikato University New Zealand (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Kurt Nicolussi Austria (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Laboratory of Ion beam physics seminar Talk given at a conference Old dates, cool stories: Radiocarbon dating trees before and during the last cooling event 12.12.2018 Zurich, Switzerland Tegel Willy; Sookdeo Adam; Friedrich Michael; Helle Gerhard; Wacker Lukas; Guidobaldi Giulia; Büntgen Ulf; Reinig Frederick; Treydte Kerstin; Kromer Bernd;
Laboratory of Ion beam physics symposium Talk given at a conference Resolving the past: high precision 14C ages in the Younger Dryas 13.09.2018 Zürich, Switzerland Guidobaldi Giulia; Reinig Frederick; Kromer Bernd; Friedrich Michael; Sookdeo Adam; Büntgen Ulf; Tegel Willy; Helle Gerhard; Treydte Kerstin; Wacker Lukas;
European Geoscience Union – Intimate Assembly Poster Resolving the past: high precision 14C ages in the Younger Dryas 22.08.2018 Gdnask, Poland Helle Gerhard; Tegel Willy; Büntgen Ulf; Wacker Lukas; Reinig Frederick; Kromer Bernd; Treydte Kerstin; Sookdeo Adam; Guidobaldi Giulia; Friedrich Michael;
23rd Radiocarbon conference Talk given at a conference Resolving the past: high precision 14C ages in the Younger Dryas 18.06.2018 Trondheim, Norway Büntgen Ulf; Tegel Willy; Sookdeo Adam; Reinig Frederick; Friedrich Michael; Treydte Kerstin; Wacker Lukas; Kromer Bernd; Helle Gerhard; Guidobaldi Giulia;
10th World Dendro Conference Poster Using anatomical techniques to describe subfossil wood decay 02.06.2018 Thimphu, Bhutan Helle Gerhard; Wacker Lukas; Kromer Bernd; Treydte Kerstin; Friedrich Michael; Sookdeo Adam; Reinig Frederick; Tegel Willy; Büntgen Ulf;
European Geoscience Union – General Assembly Poster Using anatomical techniques to describe subfossil wood decay 07.04.2018 Wien, Austria Sookdeo Adam; Wacker Lukas; Kromer Bernd; Friedrich Michael; Treydte Kerstin; Reinig Frederick; Helle Gerhard; Tegel Willy; Büntgen Ulf;
Intcal Meeting Talk given at a conference A 14C investigation into the Big Freeze 19.08.2017 Ottawa, Canada Helle Gerhard; Büntgen Ulf; Reinig Frederick; Tegel Willy; Sookdeo Adam; Kromer Bernd; Treydte Kerstin; Wacker Lukas; Friedrich Michael;
Accelerator Mass Spectrometry 14 Talk given at a conference A 14C investigation into the Big Freeze 14.08.2017 Ottawa, Canada Helle Gerhard; Friedrich Michael; Tegel Willy; Wacker Lukas; Kromer Bernd; Büntgen Ulf; Sookdeo Adam; Treydte Kerstin; Reinig Frederick;
European Geoscience Union – General Assembly Talk given at a conference More wiggles and filling a void: highly resolved temporal 14C dates during the Younger Dryas 27.04.2017 Vienna, Austria Reinig Frederick; Wacker Lukas; Friedrich Michael; Helle Gerhard; Kromer Bernd; Tegel Willy; Büntgen Ulf; Sookdeo Adam; Treydte Kerstin;
European Geoscience Union – General Assembly Talk given at a conference Paleoenvironmental potential of 253 Late Glacial pines from Zurich, Switzerland 27.04.2017 Wien, Austria Friedrich Michael; Sookdeo Adam; Büntgen Ulf; Kromer Bernd; Reinig Frederick; Helle Gerhard; Treydte Kerstin; Wacker Lukas; Tegel Willy;
Wood Conservation Workshop Talk given at a conference Challenges of wood conservation of the Swiss LG tree-ring archive 04.04.2017 WSL, Birmensdorf, Switzerland Büntgen Ulf; Kromer Bernd; Wacker Lukas; Helle Gerhard; Friedrich Michael; Treydte Kerstin; Sookdeo Adam; Tegel Willy; Reinig Frederick;
Laboratory of ion beam physics seminar Talk given at a conference Untangling radiocarbon variations during the Younger Dryas 12.10.2016 Zürich, Switzerland Helle Gerhard; Friedrich Michael; Tegel Willy; Sookdeo Adam; Wacker Lukas; Büntgen Ulf; Reinig Frederick; Kromer Bernd; Treydte Kerstin;
Goldschmidt Poster Investigating the onset of the Younger Dryas by high temporal resolution of radiocarbon 26.06.2016 Yokohama, Japan Treydte Kerstin; Helle Gerhard; Büntgen Ulf; Kromer Bernd; Tegel Willy; Reinig Frederick; Friedrich Michael; Wacker Lukas;
Deutsche Physikalische Gesellschaft Talk given at a conference Speed Dating: A rapid way to determine the radiocarbon age of wood 29.02.2016 Hannover, Germany Treydte Kerstin; Wacker Lukas; Kromer Bernd; Tegel Willy; Friedrich Michael; Sookdeo Adam; Reinig Frederick; Büntgen Ulf;
22nd Radiocarbon conference Talk given at a conference Speed Dating: A rapid way to determine the radiocarbon age of wood 01.11.2015 Dakar, Senegal Treydte Kerstin; Wacker Lukas; Friedrich Michael; Büntgen Ulf; Sookdeo Adam; Reinig Frederick; Tegel Willy; Kromer Bernd;
International Zürich IntCal-Dendro Meeting Talk given at a conference The Swiss Younger Dryas and Late Glacial Pine Extension 04.08.2015 WSL, Birmensdorf, Switzerland Kromer Bernd; Reinig Frederick; Friedrich Michael; Büntgen Ulf; Tegel Willy; Wacker Lukas; Sookdeo Adam; Helle Gerhard; Treydte Kerstin;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Der WSL Bunker als Umweltarchive im Spätglazial German-speaking Switzerland 2017
Print (books, brochures, leaflets) Auf der Suche nach altem Holz Western Switzerland German-speaking Switzerland 2016
New media (web, blogs, podcasts, news feeds etc.) Helfen Sie uns, altes Holz zu finden! Website WSL International 2016
Media relations: radio, television Speed Dating Deutschlandfunk International 2016
New media (web, blogs, podcasts, news feeds etc.) Subfossiles Holz aus dem Zürcher Binz-Quartier Website WSL International 2016
Talks/events/exhibitions Presentation HOLCIM, Aigle "In search for old wood" Western Switzerland 2015

Awards

Title Year
Experimental Innovation Award 2017

Abstract

Annually resolved and absolutely dated tree-ring chronologies are important paleo-environmental proxy archives, because they can cover several thousands of years and robust master chronologies are available for many different regions around the globe. Moreover, the unique dating accuracy has a strong impact on many fields of application, including paleoclimatology and paleoecology, but also archaeology and radiocarbon dating. Here, we strive to a) consolidate and b) extend the worldwide longest continuous tree-ring width chronology from Hohenheim/Zurich, which currently reaches back to 12 594 before present (BP). An exceptional discovery of 257 individual pine trees within the town of Zurich in 2013 (herein referred to as the Binz material), for which first radiocarbon dates now suggest a time window roughly between 14 000 and 12 1000 BP, implies strong evidence to fill the existing gaps in the Late Glacial tree-ring chronology around 12 600 BP. If indeed successful, the worldwide longest, absolutely dated and continuous tree-ring record would be extended by almost two millennia until around 14 300 BP, thus covering a particularly interesting climatological transition from the Last Ice Age into the Early Holocene - a period for which proxy evidence is generally scarce. Achieving this remarkable task, however, requires joint forces across an international Swiss-German collaboration, which will in addition to ample new dendrochronological ring width and density measurements also generate a unique record of corresponding high-resolution radiocarbon (¹4C) dates as well as stable isotope ratios (d¹³C and d¹8O). The herein proposed multi-parameter approach will not only support and strengthen the chronology development process typically based on ring width measurements alone, but particularly also our palaeoenvironmental understanding of the Late Glacial period surrounding the Younger Dryas, a period during which rapid climatic shifts likely provide a natural analogue to the most recent anthropogenic change.The new multi-parameter tree-ring archive will further allow extending the highly rewarded (tree-ring-based) terrestrial radiocarbon calibration curve for more than 2 000 years into late glacial times improving considerably radiocarbon dating accuracy for archaeologists and geological sciences. In combination with several available marine radiocarbon records and complementary radioisotopic records from polar ice cores (¹°Be, ³6Cl), an exceptionally precise and highly resolved calibration curve will also reveal historical information about changes in and levels of solar activity, as well as mounting evidence for trends and extremes at the putative transition of generally colder to warmer climatic conditions, associated with rapid changes in the Earth’s hydrological cycle. In addition, decadal to centennial ¹4C variations in tree-rings will be compared to the mirror image of ¹°Be in polar ice cores, therefore anchoring the ice core time scale to the tree-ring scale. Employment of the proposed high-resolution stable isotopes (d¹³C and d¹8O) from the same trees will further help us to more accurately capture the full range of synaptic-scale late glacial temperature and likely even also precipitation variability.
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