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Kohlenstoffkreislauf-Forschung auf dem Jungfraujoch

English title Carbon Cycle Research at Jungfraujoch
Applicant Leuenberger Markus
Number 134641
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 Other disciplines of Physics
Start/End 01.04.2011 - 31.03.2014
Approved amount 237'366.00
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All Disciplines (2)

Discipline
Other disciplines of Physics
Other disciplines of Environmental Sciences

Keywords (7)

Carbon cycle; Carbon Dioxide; Water cycle; Jungfraujoch; water isotopes; mass independent fractionation; Stratospheric Tropospheric Exchange

Lay Summary (German)

Lead
Lay summary

). Solche Isotopenbestimmungen stellen einen zusätzlichen Indikator für diese Quellenzuordnung dar. Vorstudien zu Variationen der Wasserdampfisotope werden auf dem Jungfraujoch durchgeführt werden. Das Ziel dabei ist, die Variabilität der Wasserdampfisotopen auf Wolkenbildungshöhe zu charakterisieren.2 Variationen wesentlich geringer sind. Diese kontinuierlichen Konzentrationsmessungen werden durch diskrete Flaschenmessungen kontrolliert und mit weiteren Messungen ergänzt (Isotopenbestimmungen an CO2 Variationen auf die verschiedenen Quellen erlaubt. Es geht in dieser Studie jetzt darum herauszufinden, ob dies auch auf dem Jungfraujoch gelingt, wo die CO2. Messungen in Bern haben gezeigt, dass diese Methodik eine Aufteilung der CO2 pro mol CO2. Der Austausch mit der Biosphäre hat ein Verhältnis von ungefähr 1.1 mol O2 pro mol CO2 zu erhalten, für den heutigen globalen fossilen Brennstoffmix allerdings nur ungefähr 1.4 mol O2 um 1 mol CO2) prozessabhängig sind. So braucht es für die Methanverbrennung (Erdgas) 2 mol O2/CO2 gebraucht wird. Durch die gleichzeitige Messungen beider Konzentrationen können Aussagen über die Herkunft des CO2 gemacht werden, da deren Verhältnisse (O2, O2) ist von Interesse, da bei der Verbrennung von fossilen Brennstoffen zu CO2 auf dem Jungfraujoch durchzuführen. Insbesondere die Sauerstoff Konzentration (O2. Diese Studie hat das Hauptziel Messungen von assozierten Variablen zu CO2 Konzentration in der Atmosphäre ergibt eine Erhöhung der Erdtemperatur über die Treibhausgas-Wirkung von CO2) in der Atmosphäre. Diese zunehmende CO2Der wachsende Verbrauch von fossilen Brennstoffträgern führt zu einer Zunahme des Kohlendioxids (CO

Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Atmospheric CO2, delta(O-2/N-2) and delta(CO2)-C-13 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program
van der Laan-Luijkx I. T., van der Laan S., Uglietti C., Schibig M. F., Neubert R. E. M., Meijer H. A. J., Brand W. A., Jordan A., Richter J. M., Rothe M., Leuenberger M. C. (2013), Atmospheric CO2, delta(O-2/N-2) and delta(CO2)-C-13 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program, in ATMOSPHERIC MEASUREMENT TECHNIQUES, 6(7), 1805-1815.
Combined CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch, Switzerland
Leuenberger M., Steinbacher M., Buchmann B., van der Laan-Luijkx I. T., Van der Laan S., Schibig M. F., Nyfeler P. (2013), Combined CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch, Switzerland.
Combined CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch, Switzerland
Leuenberger M., van der Laan-Luijkx I. T., Van der Laan S., Schibig M. F., Nyfeler P. (2013), Combined CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch, Switzerland.
Comparison of continous in-situ CO
Leuenberger M., Van der Laan S., van der Laan-Luijkx I. T., Schibig M. F. (2013), Comparison of continous in-situ CO.
Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques
Leuenberger M., Steinbacher M., Buchmann B., van der Laan-Luijkx I. T., Van der Laan S., Schibig M. F., Nyfeler P. (2013), Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques.
Comparison of continuous in-situ CO2 observations at Jungfraujoch, Switzerland using two different measurement techniques
Leuenberger M., Steinbacher M., Buchmann B., van der Laan-Luijkx I. T., Van der Laan S., Schibig M. F., Nyfeler P. (2013), Comparison of continuous in-situ CO2 observations at Jungfraujoch, Switzerland using two different measurement techniques.
Forschung auf höchstem Niveau
Leuenberger M. (2013), Forschung auf höchstem Niveau.
High precision carbon dioxide and oxygen measurements at Jungfraujoch
Leuenberger et al. (2013), High precision carbon dioxide and oxygen measurements at Jungfraujoch.
Jahresbericht 2013 für kombinierte CO2-O2 Messungen auf dem Jungfraujoch zuhanden Swiss GCOS office
Leuenberger M. (2013), Jahresbericht 2013 für kombinierte CO2-O2 Messungen auf dem Jungfraujoch zuhanden Swiss GCOS office.
The Global GAW Station Jungfraujoch – Measurement Programme & Selected Results
Steinbacher M., Weingartner E., Leuenberger M., Buchmann B. (2013), The Global GAW Station Jungfraujoch – Measurement Programme & Selected Results.
Atmospheric CO2, δ(O2/N2) and δ13CO2 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program
van der Laan-Luijkx Ingrid, van der Laan Sander, Uglietti Chiara, Schibig Michael, Neubert Rolf, Meijer Harro, Brand Willi, Jordan Armin, Richter J., Rothe M., Leuenberger M. C. (2012), Atmospheric CO2, δ(O2/N2) and δ13CO2 measurements at Jungfraujoch, Switzerland: results from a flask sampling intercomparison program, in Atmos. Meas. Tech. Discuss, 5, 7293-7322.
High precision carbon dioxide and oxygen measurements at Jungfraujoch
Leuenberger et al. (2012), High precision carbon dioxide and oxygen measurements at Jungfraujoch.
High precision carbon dioxide and oxygen measurements at Jungfraujoch
Leuenberger et al. (2012), High precision carbon dioxide and oxygen measurements at Jungfraujoch.
Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques
Leuenberger et al., Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques.
Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques
Leuenberger et al., Comparison of continuous in-situ CO2 observations at Jungfraujoch using two different measurement techniques.

Collaboration

Group / person Country
Types of collaboration
Max Planck Institut für Biogeochemie, Jena Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Empa Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Centre for Isotope Research CIO, Groningen Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
CNRS France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
Swiss GCOS office Switzerland (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
14. Swiss Global Change Day (Teilnahme Herr M. Schibig) Poster High precision CO2 and O2 concentration at Jungfraujoch 16.04.2014 Bern, Switzerland Leuenberger Markus;
15. Swiss Global Change Day Poster Online comparison of two CO2 measurement techniques at the 02.04.2014 Bern, Switzerland Schibig Michael Ferdinand; Leuenberger Markus;
21th European Research Course on Atmosphere (ERCA), (Teilnahme M. Schibig) Poster High precision CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch 07.01.2013 Grenoble, FR, France Schibig Michael Ferdinand;
13. Swiss Global Change Day (Teilnahme Herr M. Schibig) Poster High precision CO2 and O2 measurements at the High Altitude Research Station Jungfraujoch 04.04.2012 Bern, Switzerland Leuenberger Markus;
12. Swiss Global Change Day (Teilnahme Herr M. Schibig, M. Leuenberger) Poster European source and sink areas of CO2 retrieved from back-trajectory interpretation of combined O2 and CO2 measurements at the high alpine research station Jungfraujoch 19.04.2011 Bern, Switzerland Schibig Michael Ferdinand; Leuenberger Markus;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Kombinierte CO2- und O2-Messungen auf der hochalpinen Forschungsstation Jungfraujoch German-speaking Switzerland 2013

Associated projects

Number Title Start Funding scheme
153042 Kohlenstoff- und Wasserkreislauf Forschung auf dem Jungfraujoch 01.04.2014 Project funding (Div. I-III)
124932 Kohlenstoffkreislauf-Forschung auf dem Jungfraujoch 01.04.2009 Project funding (Div. I-III)
135356 Interaction of Aerosols with Clouds and Radiation 01.12.2011 Project funding (Div. I-III)
153042 Kohlenstoff- und Wasserkreislauf Forschung auf dem Jungfraujoch 01.04.2014 Project funding (Div. I-III)
116540 Klima- und Umweltphysik 01.04.2007 Project funding (Div. I-III)
1 Schlussband (Bd. VI) der Jacob Burckhardt-Biographie 01.10.1975 Project funding (Div. I-III)
147174 Climate and Environmental Physics 01.04.2013 Project funding (Div. I-III)

Abstract

Preamble: The project “Carbon Cycle Research at Jungfraujoch” (SNF 200021_124932) started on 1st April 2009 with duration of three years. In response to the advertisement of the granted PhD position, 10 applications were received. The position was offered to Abhijit Chougule from India in summer 2009. Unfortunately, he resigned one month before the agreed starting date. Based on a second advertisement, the PhD position was offered to Alessandro Cedrino from Italy. He started on the 1st of April 2010. Due to personal reasons (care of his grandparents) he resigned after one week of work. Based on these unexpected circumstances, the PI asked the SNF (letter 11th May 2010) for a rearrangement of the funding to maintain the measurements at Jungfraujoch. This request was fulfilled (letter 27th May 2010), however with a shortened duration of the project until the 31st of March 2011. This requires a new proposal submission for its continuation by 1st October 2010. The present proposal is based on the current status of the ongoing project as well as extended testing of the PICARRO G1102-I instrument.Climate change is driven primarily by carbon dioxide emissions from fossil fuel consumption and land use changes. During the last decade a small CO2 monitoring network was developed in Europe. A comparison between model estimates and network data have clearly identified two shortcomings: (i) More high resolution data are required supplemented with related tracers such as CO, CH4, O2, Ar and corresponding isotopes to improve the partitioning of measured CO2 variations into either oceanic, biospheric or anthropogenic contributions. (ii) Transport modelling is a major limitation for an exact explanation of CO2 variations. This proposal is oriented to these issues by addressing two topics that are closely linked, i.e. A) Measurements of carbon dioxide and associated tracers and B) Tracing Stratosphere Troposphere Exchange (STE) by water isotope measurements. CO2 measurements at Jungfraujoch that commenced in late 2000 will be complemented by associated tracers as mentioned above. Particular focus will be given to (1) continuous O2 measurements, to (2) discrete analyses on flask samplings for Ar/N2 ratios and for isotope compositions on CO2 and to (3) the major air components. Questions related to these measurements are: How variable is the carbon oxidation ratio based on measurements from Jungfraujoch? What are the dominating processes driving the observed CO2 and O2 variations as monitored at Jungfraujoch; are they more biosphere or ocean related? What is the origin of inter-annual variation for CO2 and O2? How do CO2 and O2 trends compare to other sites over longer time periods (decades)?Isotope measurements of discrete precipitation (rain/snow) as well as on water vapour samples from Jungfraujoch will be performed using a new water-to-oxygen conversion device available at the Climate and Environmental Physics Division of the Physics Institute of the University of Bern. Emphasis will be on deviations among the oxygen isotopes (?17O) due to mass-independent fractionation processes. These discrete samplings will be complemented by continuous observations of the water isotopes of all water phases (water vapour + water droplets + ice crystals) using state-of-the-art inlet systems available at Jungfraujoch combined with efficient detection based on wavelength scanned cavity ring down laser spectroscopy. Burning questions that will be addressed are: Is it possible to detect small changes in ?17O at Jungfraujoch? If so, are these variations in agreement with stratospheric air intrusions as estimated from ozone levels or potential vorticity criteria? Do isotope data from the high-elevation site Jungfraujoch differ from those of the Swiss National Network for the Observation of Isotopes in the water cycle run by the host division?Both topics naturally extend the paleoclimate related research performed at the Climate and Environmental Physics division. The first topic allows us to compare today's atmospheric CO2 variations from a unique observational site with those reconstructed from ice cores, and the second topic is closely linked to our long-term involvement in water cycle research.This proposal seeks financial support for part of the research done at Jungfraujoch by the group of Prof. Leuenberger from the Division of Climate and Environmental Physics. Monitoring of CO2 concentrations at Jungfraujoch is not part of this budget since long term financial support was granted by the federal government through GCOS Schweiz in 2010.
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