Project

Back to overview

Klima- und Umweltphysik: Isotope im Erdklimasystem (icoCEP)

English title Climate and Environmental Physics: Isotopes in Earth System Science (isoCEP)
Applicant Leuenberger Markus
Number 172550
Funding scheme Project funding (Div. I-III)
Research institution Klima und Umweltphysik Physikalisches Institut Universität Bern
Institution of higher education University of Berne - BE
Main discipline Climatology. Atmospherical Chemistry, Aeronomy
Start/End 01.04.2017 - 31.03.2022
Approved amount 1'095'910.00
Show all

All Disciplines (4)

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

Keywords (11)

Isotope; Emanation; Stable Isotope; Cosmogenic production; Dating; Underground production; Low level counting; Tracing environmental processes; Climate reconstruction; Hydrology; Atmosphere

Lay Summary (German)

Lead
Neu- und Weiterentwicklung von Isotopenmethoden und deren Anwendung an Archiven wie Baumringe, Eis, Luft und Grundwasser.
Lay summary
Wissenschaftliche Untersuchungen mittels Isotopen-Zusammensetzungen haben über die letzten Jahrzehnte deutlich zugenommen. Dies ist insbesondere auf die Entwicklung von gekoppelten Systemen der Probenaufbereitung und der Probendetektion zurückzuführen. Im Rahmen dieses Projekts werden wir Isotopenmessungen an Baumringfunden der letzten 10‘000 Jahre für Kohlenstoff, Sauerstoff und Wasserstoff durchführen. Dies erlaubt uns Variationen der Klimageschichte über die letzten 10'000 Jahre im Alpinen Raum zu rekonstruieren. Der Fokus liegt dabei auf Zeitintervallen die einen hohen beziehungsweise geringen Stress auf die untersuchten Baumarten ausweisen. Die simultane Bestimmung der Konzentration und Isotopie von Treibhausgasen (CO2, CH4, N2O) ermöglicht die Differenzierung zwischen natürlichen und von Menschen verursachten Emissionen. Im Weiteren werden die Produktions- und Freisetzungsmechanismen von Argon Isotopen im Untergrund untersucht. Dies wird eine zuverlässigere Datierung von Grundwässern mit Verweilzeiten von 100-1000 Jahre ermöglichen.
Direct link to Lay Summary Last update: 15.05.2017

Responsible applicant and co-applicants

Employees

Project partner

Datasets

Multi-laboratory compilation of atmospheric carbon dioxide data for the period 1957-2018; obspack_co2_1_GLOBALVIEWplus_v5.0_2019_08_12

Author Leuenberger, Markus
Publication date 12.08.2019
Persistent Identifier (PID) ?
Repository NOAA Earth System Research Laboratory, Global Monitoring Division
Abstract
A full list of all contributors for this product can be found at www.esrl.noaa.gov/gmd/ccgg/obspack/providerlist/obspack_co2_1_GLOBALVIEWplus_v5.0_2019-08-12.html. This product is constructed using the Observation Package (ObsPack) framework [Masarie et al., 2014; www.earth-syst-sci-data.net/6/375/2014/]. The framework is designed to bring together atmospheric greenhouse gas (GHG) observations from a variety of sampling platforms, prepare them with specific applications in mind, and package and distribute them in a self-consistent and well-documented product. ObsPack products are intended to support GHG budget studies and...

Alpine Holocene Triple Tree Ring Isotope Record

Author Arosio, Tito; Ziehmer, Malim; Nicolussi, Kurt; Schlüchter, Christian; Thurner, Andrea; Österreicher, Andreas; Nyfeler, Peter; Leuenberger, Markus
Publication date 30.03.2022
Persistent Identifier (PID) https://doi.pangaea.de/10.1594/PANGAEA.941604 ((dataset in review))
Repository PANGAEA
Abstract
Stable isotope ratios from tree rings are important proxies of past climate variations. We have access to a calendar-dated wood material from wood collected at glacier forefields and peat bog sites located in the Alps. They are of two species, larch (Larix decidua) and cembran pine (Pinus cembra). All the wood samples were collected at high altitudes in the Swiss and Tyrol Alps, they cover the whole Holocene period and belong to the Eastern Alpine Conifer Chronology Dataset (Nicolussi et al., 2009; doi:10.1177/0959683609336565). We analysed the δ13C, δ18O and δ2H isotope ratios of alpha cellulose obtained from blocks of 5 annual rings from 203 trees. Cellulose was extracted following the modified Jayme-Wise method (Boettger et al., 2007; doi:10.1021/ac0700023). The isotopes values were determined using conventional Isotope Ratio Mass Spectrometry (Isoprime 100) coupled to a pyrolysis unit (HEKAtech GmbH, Germany), which is similar to the previously used TC/EA (for technical details see (Leuenberger 2007). This approach was extended to measurements of non-exchangeable hydrogen of alpha-cellulose using the on-line equilibration method (Filot et al., 2006 (doi:10.1002/rcm.2743); Loader et al., 2015(doi:10.1021/ac502557x)). The results are reported in per mil (‰) relative to the Vienna Pee Dee Belemnite (VPDB) for carbon and to Vienna Standard Mean Ocean Water (VSMOW) for hydrogen and oxygen (Coplen 1994; doi:10.1351/pac199466020273). For all the δ13C values after 1000 CE we applied the factor described in Leuenberger (2007; doi:10.1016/S1936-7961(07)01014-7) to correct for the δ13C depletion of CO2 caused by the Industrial Revolution from about 1850 onwards (Leuenberger, 2007).

Collaboration

Group / person Country
Types of collaboration
Empa Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Departement Umweltwissenschaften, Uni Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Institut für Geographie, Universität Innsbruck Austria (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
University of Chicago United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
LSCE-CNRS Gif sur Yvette France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
GEUS, Geological Survey Denmark (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
CHYN, Universität Neuchatel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Departement Umweltwissenschaften, ETHZ Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
EAWAG Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Geological Survey Israel (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
MPI-BGC Jena Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Argonne National Laboratories United States of America (North America)
- 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
Oeschger Center Plenary Individual talk Jungfraujoch «Top of Europe» - more than a tourist site 15.09.2021 Bern, Switzerland Leuenberger Markus;
Swiss National GAW/GCOS Symposium Talk given at a conference Combined oxygen and carbon dioxide measurements as tool for the partitioning of carbon dioxide emissions among the carbon pools atmosphere, biosphere and ocean 13.09.2021 Bern, Switzerland Leuenberger Markus;
Goldschmidt Concerence 2021 Talk given at a conference Application of 3H, 85Kr, 39Ar, and 14C, noble gas thermometry, and modeling to constrain mountain-front recharge to basin-fill aquifers 04.07.2021 Virtuell, France Purtschert Roland;
Goldschmidt Conference 2021 Poster Hydrological analysis of Unzen volcanic aquifer 04.07.2021 Virtuell, France Purtschert Roland;
Goldschmidt Conference 2021 Talk given at a conference Argon-37 emanation rates determined for irradiated dry and wet rock samples 04.07.2021 Virtuell, France Purtschert Roland; Musy Stéphanie;
ICOS conference Poster Influence of SARS-CoV-2 lockdown on atmospheric background CO₂ values measured at the High Altitude Research Station Jungfraujoch, Switzerland 15.10.2020 Utrecht, Netherlands Leuenberger Markus;
ICOS conference Poster Towards greenhouse gas remote sensing evaluation using the AirCore atmospheric sampling system 15.10.2020 Utrecht, Netherlands Leuenberger Markus;
ICOS conference Talk given at a conference ICOS flask sampler performance tests 15.10.2020 Utrecht, Netherlands Leuenberger Markus;
ICOS conference Poster Evaluation of the measurement quality through the comparison of two high alpine CO2 records at the Jungfraujoch (Switzerland) 15.10.2020 Utrecht, Netherlands Leuenberger Markus;
ICOS conference Talk given at a conference Comparisons of AirCore vertical profiles of greenhouse gases from an intensive RINGO campaign at Sodankylä, Finland 15.10.2020 Utrecht, Netherlands Leuenberger Markus;
Goldschmidt Conference 2020 Talk given at a conference Impact of cosmogenic Ar-39 production on groundwater dating 22.06.2020 Virtuell, United States of America Purtschert Roland; Musy Stéphanie;
Goldschmidt Conference 2020 Poster Ar-37 emanation factors determined by irradiation experiments on soil samples 21.06.2020 Virtuell, United States of America Purtschert Roland; Musy Stéphanie;
International Noble Gas Experiment Workshop 2019 Poster GLOBAL AR-37 EMISSIONS FROM RESEARCH AND POWER REACTORS EXTRAPOLATED FROM STACK MEASUREMENTS 02.12.2019 Freiburg i. B., Germany Purtschert Roland; Fontaine-Lagrand Jean-Elie Wilfrid;
17th Swiss Geoscience Meetin Talk given at a conference Speleothem-based temperature reconstruction over the past 14000 years from Milandre Cave, Switzerland 22.11.2019 Fribourg, Switzerland Leuenberger Markus;
ICOS MSA Meeting Individual talk ICOS flask sampler tests in Bern 18.11.2019 Bologna, Italy Leuenberger Markus;
Workshop on “Developments in isotope ratio measurements for gas analysis Talk given at a conference Water isotope measurements of speleothem fluid inclusions using laser spectroscopy 10.10.2019 Metas, Bern, Switzerland Leuenberger Markus;
Developments in isotope ratio measurements for gas analysis Talk given at a conference New method for high precision measurements of water inclusions in speleothems based laser absorption spectroscopy and its application 10.10.2019 Bern, Switzerland Leuenberger Markus;
Developments in isotope ratio measurements for gas analysis Talk given at a conference New method for high precision measurements of water inclusions in speleothems based laser absorption spectroscopy and its application 10.10.2019 Wengen, Switzerland Leuenberger Markus;
Workshop on “Developments in isotope ratio measurements for gas analysis” Talk given at a conference Insights into the new tracer 17O-excess: results from the Swiss precipitation network 10.10.2019 Metas, Bern, Switzerland Leuenberger Markus;
Workshop on “Developments in isotope ratio measurements for gas analysis” Talk given at a conference Challenges of using noble gas isotope ratios for reconstructing mean global ocean temperatures, deep ocean circulation and Greenland temperature reconstruction 10.10.2019 Metas, Bern, Switzerland Leuenberger Markus;
Swiss Climate Summer School 2019 Poster Alpine tree ring triple isotope records throughout the Holocene 08.09.2019 Ascona, Switzerland Arosio Tito; Leuenberger Markus;
KUP PhD Day Talk given at a conference diverse 13.07.2019 Bern, Switzerland Purtschert Roland; Leuenberger Markus;
International Workshop on Tracer Applications of Noble Gas Radionuclides in the Geosciences. Talk given at a conference Underground production of Ar-39: Preliminary Stand of Knowledge 02.07.2019 Hefei, China Purtschert Roland;
CTBT Science and Technology 2019 Conference Poster Argon-37 variability in the low troposphere 24.06.2019 Vienna, Austria Purtschert Roland; Fontaine-Lagrand Jean-Elie Wilfrid;
CTBT Science and Technology 2019 Conference Poster Isotopic signature of radioargon released from the FRM-II reactor 24.06.2019 Vienna, Austria Purtschert Roland; Fontaine-Lagrand Jean-Elie Wilfrid;
CTBT Science and Technology 2019 Conference Talk given at a conference Ar-37, Be-7 and Xe-133 in the atmosphere 24.06.2019 Wien, Austria Purtschert Roland;
CLOUD-MOTION summer school and CLOUD collaboration meeting Talk given at a conference History of High-Alpine research at the Jungfraujoch: M. Leuenberger, Univ. Bern 14.06.2019 Wengen, Switzerland Leuenberger Markus;
Cloud Summer School 2019 Individual talk Past, present and future activities at Jungfraujoch 14.06.2019 Wengen, Switzerland Leuenberger Markus;
IAEA Isotope Hydrology Symposium Talk given at a conference 81Kr groundwater dating in rocks with high Uranium content 20.05.2019 Wien, Austria Purtschert Roland;
International Symposium on Isotope Hydrology: Advancing the Understanding of Water Cycle Processes Talk given at a conference 81KR GROUNDWATER DATING IN ROCKS WITH HIGH URANIUM CONTENT 20.05.2019 Vienna, Austria Musy Stéphanie; Purtschert Roland;
IAEA Isotope Hydrology Symposium Poster New in-situ samplers for krypton-85 for groundwater dating 20.05.2019 Wien, Austria Purtschert Roland; Musy Stéphanie;
International Symposium on Isotope Hydrology: Advancing the Understanding of Water Cycle Processes Poster NEW IN-SITU SAMPLERS FOR KRYPTON-85 FOR GROUNDWATER DATING 20.05.2019 Vienna, Austria Purtschert Roland; Musy Stéphanie;
TRACE 2019 Poster Alpine tree ring triple isotope records throughout the Holocene 06.05.2019 Caserata, Italy Arosio Tito; Leuenberger Markus;
EGU General Assembly Talk given at a conference Exploring the 36Cl/Cl input in arid environments: New insights gained by 81Kr groundwater dating in the Negev Desert, Israel 08.04.2019 Wien, Austria Purtschert Roland;
EGU General Assembly Talk given at a conference The comparison of two high altitude carbon dioxyde records from the Jungfraujoch area (Switzeralnd) reveals diurnal differences 07.04.2019 Vienna, Austria Leuenberger Markus; Mandrakis Vasileios;
EGU General Assembly Talk given at a conference Vertical profile observations of greenhouse gases using AirCore and FTIR from the intensive RINGO campaign at Sodankylä, Finland 07.04.2019 Vienna, Austria Leuenberger Markus;
EGU General Assembly Poster Alpine tree ring triple isotope records throughout the Holocene 07.04.2019 Vienna, Austria Arosio Tito; Leuenberger Markus;
EGU General Assembly Talk given at a conference Swiss Nitrous Oxide and Methane Emissions Estimated by Inverse Modelling 07.04.2019 Vienna, Austria Leuenberger Markus;
Seminar Talk, University of Basel Individual talk Links between the main biogeochemical cycles of the Earth’s climate system 27.03.2019 Basel, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster Glider-AirCore analyses linking ground-based and column integrated trace gas measurements with satellite retrievals 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Talk given at a conference Comparison of two high alpine CO2 records from the Jungfraujoch area 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster Horizontal open-path FTS measurements for bridging the gap between high accurate point measurements and spatially averaging atmospheric models using vertical greenhouse gas retrievals from satellite (H-OP-FTS) 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster Temperature reconstruction using speleothem fluid inclusions from Milandre cave, Jura Mountains, Switzerland 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster High precision CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch, Switzerland 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster First eddy covariance flux analysis at the tall tower site Beromünster, Switzerland 30.11.2018 Bern, Switzerland Leuenberger Markus;
16th Swiss Geoscience Meeting Poster Quality check of water isotope distribution from space to ground by vertical profiling and altitude dependent in-situ records 30.11.2018 Bern, Switzerland Leuenberger Markus;
Weiterbildung Gymnasien Individual talk Machen wir genug bezüglich der Klima-veränderung? Was sagen die Messungen? 27.11.2018 Bern, Switzerland Leuenberger Markus;
ICOS Science Conference 2018 Poster Inverse Modelling of Swiss CH4 and N2O Emissions 13.09.2018 Prag, Czech Republic Leuenberger Markus;
ICOS Science Conference 2018 Talk given at a conference First eddy covariance flux analysis at the tall tower site Beromünster, Switzerland 13.09.2018 Prag, Czech Republic Leuenberger Markus;
ICOS Science Conference 2018 Poster ICOS Switzerland – Greenhouse gas stories from high altitudes 13.09.2018 Prag, Czech Republic Leuenberger Markus;
ICOS Science Conference 2018 Poster Measuring atmospheric argon at Jungfrau East Ridge to estimate the oceanic influence on atmospheric oxygen using a mass spectrometer 11.09.2018 Prag, Czech Republic Leuenberger Markus;
EO 4 ALPS Poster Horizontal Open-Path FTS Measurements for Bridging the Gap Between High Accurate Point Measurements and Spatially Averaging Atmospheric Models Using Vertical Greenhouse Gas Retrievals from Satellite (H-OP-FTS) 27.06.2018 Innsbruck, Austria Leuenberger Markus;
EO 4 ALPS Talk given at a conference The Virtual Alpine Observatory, VAO 27.06.2018 Innsbruck, Austria Leuenberger Markus;
EO 4 ALPS Poster Glider-AirCore Analyses Linking Ground-Based and Column Integrated Trace Gas Measurements with Satellite Retrievals 27.06.2018 Innsbruck, Austria Leuenberger Markus;
EO 4 ALPS Poster Satellite Applications for the Benefit of the Alps (SABA) 27.06.2018 Innsbruck, Austria Leuenberger Markus;
EO 4 ALPS Poster Quality Check of Water Isotope Distribution from Space to Ground by Vertical Profiling and Altitude Dependent In-Situ Records 27.06.2018 Innsbruck, Austria Leuenberger Markus;
KUP PhD Day Talk given at a conference diverse 07.06.2018 Bern, Switzerland Purtschert Roland; Leuenberger Markus;
IAEA Technical Meeting on Advanced Analytical Methods for Tritium and Stable Isotopes of Carbon and Nitrogen Individual talk Insights into the new tracer 17O-excess: results from the Swiss precipitation network, speleothem and air humidity 14.05.2018 IAEA, Vienna, Austria Leuenberger Markus;
EGU General Assembly Talk given at a conference Investigation of adsorption / desorption behavior of various materials in small volume measurement chambers and its relevance to atmospheric trace gas analysis 08.04.2018 Vienna, Austria Leuenberger Markus;
4th VAO symposium Talk given at a conference COMPARISON OF TWO HIGH ALPINE CO2 RECORDS FROM THE JUNGFRAUJOCH AREA (SWITZERLAND) 13.03.2018 Grenoble, France Leuenberger Markus;
Invited Seminar talk, University of Heidelberg Individual talk Paleoclimate reconstruction using speleothem fluid inclusions from Milandre cave (Switzerland) 05.03.2018 Heidelberg, Germany Leuenberger Markus;
Institutsversammlung Physikalisches Institut, Universität Bern Individual talk Fluid inclusion water isotope record from a Swiss speleothem 13.02.2018 Bern, Switzerland Leuenberger Markus;
Institutsversammlung Phys. Institut, Universität Bern Individual talk Stalagmiten - ein neues Paleo-Archiv für Wasser 13.02.2018 Bern, Switzerland Leuenberger Markus;
15th Swiss Geoscience Meeting Talk given at a conference Estimation of the fossil-fuel component in atmospheric CO2 based on radiocarbon measurements at the Beromünster tall tower, Switzerland 17.11.2017 Davos, Switzerland Leuenberger Markus;
15th Swiss Geoscience Meeting Poster Four years of continuous CO2/CH4/CO measurements (2012-2016) at the Beromünster tall tower station in Switzerland 17.11.2017 Davos, Switzerland Leuenberger Markus;
ICOS conference Poster Continuous observation of CO₂, O₂ and radon in Bern city are complemented with their stable isotope measurements to partition CO₂ emissions into biogenic and specific fossil fuel contributions 15.10.2017 Utrecht online, Netherlands Mandrakis Vasileios; Leuenberger Markus;
GGMT-2017 Talk given at a conference Measurements of atmospheric oxygen using a newly built CRDS analyzer and compari-son with a paramagnetic cell and an IRMS 27.08.2017 Dübendorf, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Poster 10-years of combined CO2 and O2 measurements at two remote sites of Jungfraujoch, Switzerland and Puy de Dôme, France 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Poster High altitude CO2 measurements at the Jungfraujoch (Switzerland): Comparison between the Sphinx (3570 m a.s.l.) and East Ridge (3690 m a.s.l.) 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Talk given at a conference Estimation of the fossil-fuel component in atmospheric CO2 based on radiocarbon measurements at the Beromünster tall tower, Switzerland 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Poster Four years of continuous CO2/CH4/CO meaurements (2012-2016) at the Beromünster tall tower station in Switzerland 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Poster Measurements and modelling of carbon dioxide in Switzerland: The CarboCount-CH project 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
10th International Carbon Dioxide Conference Poster 20th century changes in carbon isotopes and water-use efficiency: tree-ringbased evaluation of the CLM4.5 and LPX-Bern models 20.08.2017 Interlaken, Switzerland Leuenberger Markus;
Goldschmidt Conference Talk given at a conference Direct evidence for changes in the hydrological cycle inferred from speleothem fluid inclusions for the last 14’000 years in Milandre Cave (Switzerland) 18.08.2017 Paris, France Leuenberger Markus;
Goldschmidt Conference Talk given at a conference Insights into the new tracer 17O-excess: results from the Swiss precipitation network 16.08.2017 Paris, France Leuenberger Markus;
Goldschmidt Conference Poster Underground production of Kr-81 detected in subsurface fluids 14.08.2017 Paris, France Purtschert Roland;
Isotopes 2017 Talk given at a conference Direct evidence for changes of the hydrological cycle from speleothem fluid inclusions data in Central Europe 09.07.2017 Monte Verita, Switzerland Leuenberger Markus;
Isotopes 2017 Talk given at a conference A millennial reconstruction of the oxygen isotope composition of summer precipitation in the Alps 09.07.2017 Monte Verita, Switzerland Leuenberger Markus;
EGU General Assembly Poster Constraining Swiss Methane Emissions from Atmospheric Observations: Sensitivities and Temporal Development 23.04.2017 Vienna, France Leuenberger Markus;
EGU General Assembly Talk given at a conference Alpine Holocene Tree Ring Isotope Records – A Synthesis of a Multi-Proxy Approach in Dendroclimatology 23.04.2017 Vienna, Austria Leuenberger Markus;
EGU General Assembly Talk given at a conference 400 years of summer hydroclimate from stable isotopes in Iberian trees 23.04.2017 Vienna, Austria Leuenberger Markus;
EGU General Assembly Talk given at a conference High Precision Continuous and Real-Time Measurement of Atmospheric Oxygen Using Cavity Ring-Down Spectroscopy 23.04.2017 Vienna, Austria Leuenberger Markus;
EGU General Assembly Poster Automatization of an inverse surface temperature modelling procedure for Greenland ice cores, developed and evaluated using nitrogen and argon isotope data measured on the Gisp2 ice core 23.04.2017 Vienna, Austria Leuenberger Markus; Döring Michael;
EGU General Assembly Poster Gas adsorption and desorption effects on high pressure small volume cylinders and their relevance to atmospheric trace gas analysis 23.04.2017 Vienna, Austria Leuenberger Markus;
Swiss Global Change Day 2017, 2018 and 2019 Poster diverse 11.04.2017 Bern, Switzerland Leuenberger Markus; Arosio Tito; Döring Michael;


Knowledge transfer events



Self-organised

Title Date Place
diverse 01.04.2017 Jungfraujoch, Switzerland
diverse 01.04.2017 Jungfraujoch, Switzerland
diverse 01.04.2017 Jungfraujoch, Switzerland

Communication with the public

Communication Title Media Place Year
New media (web, blogs, podcasts, news feeds etc.) «Top of Europe» – auch bei der Messung von Treibhausgasen Scnat International 2018
New media (web, blogs, podcasts, news feeds etc.) «Top of Europe» – auch bei Treibhausgasmessungen Empa German-speaking Switzerland 2018
New media (web, blogs, podcasts, news feeds etc.) «Top of Europe» – auch bei Treibhausgasmessungen Universität Bern German-speaking Switzerland 2018
New media (web, blogs, podcasts, news feeds etc.) «Top of Europe» for greenhouse gas measurements Empa International 2018
New media (web, blogs, podcasts, news feeds etc.) CLASS 1 Atmospheric Monitoring Station – Jungfraujoch ETHZ International 2018
New media (web, blogs, podcasts, news feeds etc.) Icoscapes ICOS-RI International 2018
New media (web, blogs, podcasts, news feeds etc.) ICOS-CH ETHZ German-speaking Switzerland 2018
Media relations: radio, television Verräterisches Argon Nano 3Sat/SRF German-speaking Switzerland 2017

Awards

Title Year
Acceptance of Beromünster station, Switzerland, as a GAW Regional station 2019
Research Station Jungfraujoch receives the Chemical Landmark award from the Swiss Chemical Society. 2019
The Research Station Jungfraujoch receives the Historic site award of the European Physical Society (EPS) 2019
The Jungfraujoch Research Station was awarded the status of Class 1 ICOS Station 2018

Associated projects

Number Title Start Funding scheme
144255 Alpine Jahrringisotopen Zeitreihen im Holozän 01.05.2013 Project funding (Div. I-III)
170726 IsoConCair: Charakterisierung der Konzentrations- und Isotopenzusammensetzung der Hauptluftkomponenten 01.12.2016 R'EQUIP
148994 ICOS-Zusatz an den Unterhalt und Betrieb der Hochalpinen Forschungsstation Jungfraujoch, 2013-2016 01.12.2013 Research Infrastructure
148992 ICOS-CH: Integrated Carbon Observation System in Switzerland 01.07.2013 Research Infrastructure
159563 Climate and Environmental Physics 01.04.2015 Project funding (Div. I-III)
198227 ICOS-CH Phase 3 01.07.2021 Research Infrastructure
205143 Subsidy for the maintenance and operation of the High Altitude Research Stations Jungfraujoch and Gornergrat, 2022 - 2025 01.01.2022 Research Infrastructure
173691 ICOS-CH Phase 2 01.07.2017 Research Infrastructure

Abstract

Isotope studies have considerably increased over the last decades mainly due to the development of online preparation systems and new detector methods such as laser based instruments. Yet, for many applications mass spectrometric isotope ratio measurements are still state-of-the-art. Recent analytical developments in our groups allow a more detailed quantification of past temperature variations based on climate proxies and characterization of biogeochemical cycles. The goal of the project isotopes in Earth System Science (isoCEP) is to extend these new analytical tools and to apply them to four paleo archives, namely ice cores, tree rings, ground water and speleothems as well as to direct atmospheric air samples in order to enhance the process understanding of the Earth’s Climate System. This includes (i) quantification of temperature variations based on air nitrogen and argon isotopes (d15N and d40Ar) extracted from polar ice focussing on the Holocene period; (ii) quantification of water stable isotopes (d17O, d18O, d17O, dD) of speleothem fluid inclusions and build-up of an expertise of clumped isotope applications related to the above mentioned archives and on biogeochemical processes, i.e. photosynthesis/respiration, fossil fuel oxidation etc.; (iii) measurements of triple isotopes (d13C, d18O and dD) to complete the Holocene records of tree ring finds from forelands of retreating alpine glaciers; (iv) quantification of direct atmospheric air composition and (v) quantification of subsurface production rates of argon isotopes in order to enhance the robustness of argon isotope interpretations related to groundwater dating and reconstructions of recharge conditions in the past. We will address two main objectives by investigations of these five different research topics. First, we aim to improve the robustness of Holocene temperature reconstructions and to better understand their spatial differences and gradients. Therefore, we will perform measurements from four paleo archives polar ice cores, groundwater aquifers, mid-latitude tree rings and low-mid latitude speleothems that exhibit the necessary spatial and vertical coverage. Second, since the understanding of biogeochemical processes is the key to correctly read and interpret past variations of climate proxy data, we will deepen this understanding by process specific experiments including clumped besides conventional isotope ratio measurements complemented by gas concentration analyses. This also includes linking past variations with present-day measurements and comparisons with in-house model results. These five different research topics and associated data streams allow us to capture - though still incompletely - the complexity of the Earth’s Climate Systems. In collaboration with our partners and colleagues from the Climate and Environmental Physics Division and with regard to their proposed work submitted in parallel to this proposal, we optimize the outcome from both, the experimental and model, perspectives.
-