Project

Back to overview

Assessing the spatiotemporal dynamics of the North American Monsoon System using tree-ring stable isotope and vegetation model parameters

English title Assessing the spatiotemporal dynamics of the North American Monsoon System using tree-ring stable isotope and vegetation model parameters
Applicant Babst Flurin
Number 154543
Funding scheme Advanced Postdoc.Mobility
Research institution Eidgenössische Forschungsanstalt WSL für Wald, Schnee und Landschaft
Institution of higher education Institution abroad - IACH
Main discipline Climatology. Atmospherical Chemistry, Aeronomy
Start/End 01.08.2014 - 30.09.2017
Show all

All Disciplines (2)

Discipline
Climatology. Atmospherical Chemistry, Aeronomy
Other disciplines of Environmental Sciences

Keywords (8)

climatic limitations; atmospheric circulation patterns; isotopes; ecophysiology; forest productivity; vegetation model; monsoon; global change

Lay Summary (German)

Lead
Die regionalen Auswirkungen der prognostizierten Klimaerwärmung auf Wälder weltweit sind ungewiss. Es ist jedoch wahrscheinlich, dass die sich ändernden Wachstumsbedingungen die Artenzusammensetzung und Produktivität von Waldökosystemen vielerorts stark beeinflussen werden. Besonders davon betroffen sind Baumarten am Rande ihres Verbreitungsgebiets (z.B. Kiefern in der Schweiz) und Wälder in Trockengebieten. Ein besseres Verständnis der Klima-Wachstumsbeziehungen ist dringend nötig, weil Baumarten stark von verfügbaren Ressourcen (Wasser, Licht, Nährstoffe, etc.) in verschiedenen Jahreszeiten abhängen und die saisonale Ausprägung von Klimaänderungen entscheidend sein wird.
Lay summary

Inhalt und Ziel des Forschungsprojekts

Dieses Projekt untersucht den räumlichen und zeitlichen Einfluss von Monsunregen auf Kiefernwachstum im semi-ariden Südwesten der USA. Messungen stabiler Kohlen- und Sauerstoff Isotope in Baumringen helfen dabei, den Einfluss der Frühlingstrockenphase vom Sommerniederschlag zu unterscheiden und die physiologischen Anpassungen der Bäume zu erörtern. Zeitreihen über mehrere Jahrzehnte werden dabei Aufschluss über klimatische Veränderungen geben und ein Vegetationsmodell wird eine Verbindung zur Produktivität des ökosystems erlauben. Diese Kombination eröffnet eine integrative Perspektive, die neue Erkenntnisse über den Umweltwandel generieren wird.

Gesellschaftlicher Kontext des Forschungsprojekts

Klimamodelle prognostizieren einen massiven Anstieg von Trockenstress im Südwesten der USA für das 21. Jahrhundert, mit nicht absehbaren gesellschaftlichen und wirtschaftlichen Folgen. Dieses Projekt trägt zu einer verlässlicheren wissenschaftlichen Basis bei, die forstwirtschaftliche und umweltpolitische Entscheidungsfindungen erleichtert. Die erwarteten Forschungsergebnisse sind zudem für Süd- und Mitteleuropa relevant, wo mittelfristig ähnliche klimatische Verhältnisse vorausgesagt werden.

Direct link to Lay Summary Last update: 30.06.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Twentieth century redistribution in climatic drivers of global tree growth
Babst Flurin, Bouriaud Olivier, Poulter Benjamin, Trouet Valerie, Girardin Martin P., Frank David C. (2019), Twentieth century redistribution in climatic drivers of global tree growth, in Science Advances, 5(1), eaat4313-eaat4313.
Recent enhanced high-summer North Atlantic Jet variability emerges from three-century context
Trouet V., Babst F., Meko M. (2018), Recent enhanced high-summer North Atlantic Jet variability emerges from three-century context, in Nature Communications, 9(1), 180-180.
The climatic drivers of normalized difference vegetation index and tree-ring-based estimates of forest productivity are spatially coherent but temporally decoupled in Northern Hemispheric forests
Seftigen Kristina, Frank David C., Björklund Jesper, Babst Flurin, Poulter Benjamin (2018), The climatic drivers of normalized difference vegetation index and tree-ring-based estimates of forest productivity are spatially coherent but temporally decoupled in Northern Hemispheric forests, in Global Ecology and Biogeography, 27(11), 1352-1365.
When tree rings go global: Challenges and opportunities for retro- and prospective insight
Babst Flurin, Bodesheim Paul, Charney Noah, Friend Andrew D., Girardin Martin P., Klesse Stefan, Moore David J.P., Seftigen Kristina, Björklund Jesper, Bouriaud Olivier, Dawson Andria, DeRose R. Justin, Dietze Michael C., Eckes Annemarie H., Enquist Brian, Frank David C., Mahecha Miguel D., Poulter Benjamin, Record Sydne, Trouet Valerie, Turton Rachael H., Zhang Zhen, Evans Margaret E.K. (2018), When tree rings go global: Challenges and opportunities for retro- and prospective insight, in Quaternary Science Reviews, 197, 1-20.
A Combined Tree Ring and Vegetation Model Assessment of European Forest Growth Sensitivity to Interannual Climate Variability
Klesse S., Babst F., Lienert S., Spahni R., Joos F., Bouriaud O., Carrer M., Di Filippo A., Poulter B., Trotsiuk V., Wilson R., Frank D. C. (2018), A Combined Tree Ring and Vegetation Model Assessment of European Forest Growth Sensitivity to Interannual Climate Variability, in Global Biogeochemical Cycles, 1.
Converging Climate Sensitivities of European Forests Between Observed Radial Tree Growth and Vegetation Models
Zhang Zhen, Babst Flurin, Bellassen Valentin, Frank David, Launois Thomas, Tan Kun, Ciais Philippe, Poulter Benjamin (2018), Converging Climate Sensitivities of European Forests Between Observed Radial Tree Growth and Vegetation Models, in Ecosystems, 21(3), 410-425.
Relative influences of multiple sources of uncertainty on cumulative and incremental tree-ring-derived aboveground biomass estimates
Alexander M. Ross, Rollinson Christine R., Babst Flurin, Trouet Valerie, Moore David J. P. (2018), Relative influences of multiple sources of uncertainty on cumulative and incremental tree-ring-derived aboveground biomass estimates, in Trees, 32(1), 265-276.
Differentiating drought legacy effects on vegetation growth over the temperate Northern Hemisphere
Wu Xiuchen, Liu Hongyan, Li Xiaoyan, Ciais Philippe, Babst Flurin, Guo Weichao, Zhang Cicheng, Magliulo Vincenzo, Pavelka Marian, Liu Shaomin, Huang Yongmei, Wang Pei, Shi Chunming, Ma Yujun (2018), Differentiating drought legacy effects on vegetation growth over the temperate Northern Hemisphere, in Global Change Biology, 24(1), 504-516.
Evaluating the effect of alternative carbon allocation schemes in a land surface model (CLM4.5) on carbon fluxes, pools, and turnover in temperate forests
Montané Francesc, Fox Andrew M., Arellano Avelino F., MacBean Natasha, Alexander M. Ross, Dye Alex, Bishop Daniel A., Trouet Valerie, Babst Flurin, Hessl Amy E., Pederson Neil, Blanken Peter D., Bohrer Gil, Gough Christopher M., Litvak Marcy E., Novick Kimberly A., Phillips Richard P., Wood Jeffrey D., Moore David J. P. (2017), Evaluating the effect of alternative carbon allocation schemes in a land surface model (CLM4.5) on carbon fluxes, pools, and turnover in temperate forests, in Geoscientific Model Development, 10(9), 3499-3517.
Ecosystem functioning is enveloped by hydrometeorological variability
Pappas Christoforos, Mahecha Miguel D., Frank David C., Babst Flurin, Koutsoyiannis Demetris (2017), Ecosystem functioning is enveloped by hydrometeorological variability, in Nature Ecology & Evolution, 1(9), 1263-1270.
Northern Hemisphere Jet Stream Position Indices as Diagnostic Tools for Climate and Ecosystem Dynamics
Belmecheri Soumaya, Babst Flurin, Hudson Amy R., Betancourt Julio, Trouet Valerie (2017), Northern Hemisphere Jet Stream Position Indices as Diagnostic Tools for Climate and Ecosystem Dynamics, in Earth Interactions, 21(8), 1-23.
Fusing tree-ring and forest inventory data to infer influences on tree growth
Evans Margaret E. K., Falk Donald A., Arizpe Alexis, Swetnam Tyson L., Babst Flurin, Holsinger Kent E. (2017), Fusing tree-ring and forest inventory data to infer influences on tree growth, in Ecosphere, 8(7), e01889-e01889.
Improved tree-ring archives will support earth-system science
Babst Flurin, Poulter Benjamin, Bodesheim Paul, Mahecha Miguel D., Frank David C. (2017), Improved tree-ring archives will support earth-system science, in Nature Ecology & Evolution, 1(2), 0008-0008.
Observed forest sensitivity to climate implies large changes in 21st century North American forest growth
Charney Noah D., Babst Flurin, Poulter Benjamin, Record Sydne, Trouet Valerie M., Frank David, Enquist Brian J., Evans Margaret E. K. (2016), Observed forest sensitivity to climate implies large changes in 21st century North American forest growth, in Ecology Letters, 19(9), 1119-1128.
Blue intensity parameters derived from Ponderosa pine tree rings characterize intra-annual density fluctuations and reveal seasonally divergent water limitations
Babst Flurin, Wright William E., Szejner Paul, Wells Leon, Belmecheri Soumaya, Monson Russell K. (2016), Blue intensity parameters derived from Ponderosa pine tree rings characterize intra-annual density fluctuations and reveal seasonally divergent water limitations, in Trees, 30(4), 1403-1415.
Latitudinal gradients in tree ring stable carbon and oxygen isotopes reveal differential climate influences of the North American Monsoon SystemIntra-annual Tree Ring C and O Isotopes
Szejner Paul, Wright William E., Babst Flurin, Belmecheri Soumaya, Trouet Valerie, Leavitt Steven W., Ehleringer James R., Monson Russell K. (2016), Latitudinal gradients in tree ring stable carbon and oxygen isotopes reveal differential climate influences of the North American Monsoon SystemIntra-annual Tree Ring C and O Isotopes, in Journal of Geophysical Research: Biogeosciences, 121(7), 1978-1991.
Eine Einführung in die Dendrochronologie für Ägyptologen
Creasman Pearce Paul, Dean Jeff, Babst Flurin (2015), Eine Einführung in die Dendrochronologie für Ägyptologen, in Göttinger Miszellen, 49-66.
Millennium-length evaluation of Sierra Nevada snowpack
Belmecheri Soumaya, Babst Flurin, Wahl Eugene, Stahle David, Trouet Valerie (2015), Millennium-length evaluation of Sierra Nevada snowpack, in Nature Climate Change, 1.

Collaboration

Group / person Country
Types of collaboration
Eidgenössische Forschungsanstalt WSL, Dendroklimatologie Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
University of Gothenburg, Department of Earth Sciences Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
W. Szafer Institute of Botany, Polish Academy of Sciences Poland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
University of Arizona, Laboratory of Tree-ring Research United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
University of Cambridge, Department of Geography Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Montana State University, Ecosystem Dynamics Lab United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
NASA Goddard Space Flight Center United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
University of Arizona, Department of Ecology and Evolutionary Biology United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
University of Arizona, School of Natural Resources and the Environment United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
NOAA United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Max Planck Institut für Biogeochemie Germany (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
BACI Progress and Review Meeting Talk given at a conference Tracking changes in the climatic drivers of forest growth at large spatiotemporal scales 21.11.2017 Jena, Germany Babst Flurin;
ICOS Belgium Science Conference Talk given at a conference Using tree-ring sampling to quantify historical stem growth and reconstruct aboveground biomass at flux-tower sites 20.10.2017 Gembloux, Belgium Babst Flurin;
Eurodendro conference Talk given at a conference Towards spatiotemporal tree-ring width data for Europe 06.09.2017 Tartu, Estonia Babst Flurin;
Ecological Society of America annual meeting Talk given at a conference Reconstructing drought legacies in the North American Monsoon climate system using tree ring stable isotopes 06.08.2017 Portland, United States of America Babst Flurin;
WSL tree-ring lecture series Individual talk Statistical upscaling of global tree-ring data 18.07.2017 Birmensdorf, Switzerland Babst Flurin;
European Geosciences Union General Assembly Talk given at a conference When tree rings go global: challenges and opportunities for retro- and prospective insights 23.04.2017 Vienna, Austria Babst Flurin;
BGC-Feedback Teleconference Individual talk A data assimilation system for land surface models - information from fluxes, phenology and biomass 11.03.2017 Tucson, United States of America Babst Flurin;
AGU Fall Meeting Talk given at a conference Using tree-rings to constrain terrestrial carbon cycling: advances, pitfalls, and opportunities 12.12.2016 San Francisco, United States of America Babst Flurin;
GEO BON Open Science Conference Talk given at a conference Essential Ecosystem Variables emerge from linking Essential Climate and Biodiversity variables 04.07.2016 Leipzig, Germany Babst Flurin;
BACI Progress and Review Meeting Talk given at a conference On the potential and challenges for integrating global tree-ring archives with in-situ and Earth observations 07.06.2016 Jena, Germany Babst Flurin;
Lecture series of the Laboratory of Tree-Ring Research Individual talk Combining tree-ring and forest inventory data to infer climatic niche: a hierarchical Bayesian approach 20.04.2016 Tucson, United States of America Babst Flurin;
European Geosciences Union General Assembly Talk given at a conference Characterizing intra-annual density fluctuations using fine-spatial resolution blue intensity profiles 17.04.2016 Vienna, Austria Babst Flurin;
Third Amercian dendrochronology conference Talk given at a conference Latitudinal gradients in the stable carbon and oxygen isotopes of tree-ring cellulose reveal differential climate influences of the North American Monsoon system 28.03.2016 Mendoza, Argentina Babst Flurin;
Third Amercian dendrochronology conference Poster Associations among tree-ring, satellite, and mechanistically modelled estimates of productivity across the Northern Hemisphere 28.03.2016 Mendoza, Argentina Babst Flurin;
Third Amercian dendrochronology conference Talk given at a conference Combining tree-ring and forest inventory data to infer climatic niche: a hierarchical Bayesian approach 28.03.2016 Mendoza, Argentina Babst Flurin;
Third Amercian dendrochronology conference Poster Monthly climatic controls of the global vegetation activity: comparing satellite and tree-ring records with DGVM-based NPP estimates 28.03.2016 Mendoza, Argentina Babst Flurin;
Lecture series of the Krakow Botanical Society Individual talk The use of large tree-ring networks in environmental change research 03.03.2016 Krakow, Poland Babst Flurin;
AGU Fall Meeting Poster 20th century northern hemisphere Jetstream variability 14.12.2015 San Francisco, United States of America Babst Flurin;
AGU Fall Meeting Talk given at a conference Using novel approaches in process-based modeling for interpreting inter-annual variability in tree-ring widths, wood density profiles, and cellulose isotopic ratios 14.12.2015 San Francisco, United States of America Babst Flurin;
AGU Fall Meeting Poster Latitudinal Gradients in the Stable Carbon and Oxygen Isotopes of Tree-Ring Cellulose Reveal Differential Climate Influences of the North American Monsoon 14.12.2015 San Francisco, United States of America Babst Flurin;
AGU Fall Meeting Talk given at a conference Multi-century evaluation of Sierra Nevada snowpack 14.12.2015 San Francisco, United States of America Babst Flurin;
ESA Annual Meeting Poster Quantifying uncertainties in tree-ring estimates of biomass at the Valles Caldera, NM 09.08.2015 Baltimore, United States of America Babst Flurin;
ESA Annual Meeting Talk given at a conference North American forest growth potentials reduced by climate change in the 21st century 09.08.2015 Baltimore, United States of America Babst Flurin;
ESA Annual Meeting Talk given at a conference A tree-ring perspective on terrestrial carbon dynamics 09.08.2015 Baltimore, United States of America Babst Flurin;
International Congress for Conservation Biology Talk given at a conference A tree-ring perspective on the impact of climate change on North American tree growth 06.08.2015 Montpellier, France Babst Flurin;
Tree-ring lecture Series University of Arizona Individual talk Tree rings go global: the use of large networks in environmental change research 13.05.2015 Tucson, United States of America Babst Flurin;
Earth week University of Arizona Talk given at a conference Detecting false latewood bands from reflected blue light measurements 07.04.2015 Tucson, United States of America Babst Flurin;
5th North American Carbon Program Principal Investigators Meeting Poster Eddy meets dendro: Carbon allocation in two contrasting forest ecosystems 26.01.2015 Washington DC, United States of America Babst Flurin;
5th North American Carbon Program Principal Investigators Meeting Talk given at a conference Altered forest growth rates projected for North America with regionally variable climate response regimes 26.01.2015 Washington DC, United States of America Babst Flurin;
5th North American Carbon Program Principal Investigators Meeting Poster Comparing simulations of the community land model (CLM) with observations on multiple time scales for temperate forests in North America 26.01.2015 Washington DC, United States of America Babst Flurin;
AGU Fall Meeting Talk given at a conference Applications of dendrochronology for informing terrestrial carbon cycle modeling 15.12.2014 San Francisco, United States of America Babst Flurin;
AGU Fall Meeting Poster A tree-ring based reconstruction (1725-present) shows a 20th century northward shift in the position of the summer North Atlantic Jet 15.12.2014 San Francisco, United States of America Babst Flurin;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Tree-ring day, University of Arizona Talk 07.04.2015 Tucson, United States of America Babst Flurin;


Communication with the public

Communication Title Media Place Year
Media relations: radio, television Guten Morgen Radio SRF 4 News German-speaking Switzerland 2019

Associated projects

Number Title Start Funding scheme
144034 Regional response of forest productivity to the North American Monsoon System along a broad climatic gradient 01.02.2013 Fellowships for prospective researchers

Abstract

This study addresses the magnitude, geographic domain, and the associated spatiotemporal dynamics of monsoonal influence on forest ecophysiological processes (i.e. carbon and water cycling) across the southwestern United States. These poorly understood mechanisms are highly relevant for the vigor, productivity and susceptibility of ecosystems under a changing climate and directly affect human societies in this semi-arid area. An extensive tree-ring stable isotope network (13C, 18O) will be developed from existing material to assess seasonal water-use strategies and efficiency across and beyond the monsoon area. In a second project phase, the tree-ring data will be employed to benchmark simulations of ecosystem productivity from dynamic global vegetation models, which tend to be overly drought sensitive compared to observational references. As forest growth in the study area heavily depends on the intensity and persistence of the summer monsoon, such model-data comparisons will simultaneously contribute to improved quantification of the regional terrestrial carbon sink and to efforts refining current-generation earth system models. The mechanisms observed in this project are expected to yield valuable information regarding the current and future drought susceptibility of central and southern European forests because the study area represents a warm and dry analogue to projected future conditions.
-