Projekt

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Farm-scale Methane Fluxes (FasMeF)

Titel Englisch Farm-scale Methane Fluxes (FasMeF)
Gesuchsteller/in Eugster Werner
Nummer 129866
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Institut für Agrarwissenschaften ETH Zürich
Hochschule ETH Zürich - ETHZ
Hauptdisziplin Andere Gebiete der Umweltwissenschaften
Beginn/Ende 01.08.2010 - 31.10.2013
Bewilligter Betrag 235'403.00
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Keywords (7)

methane fluxes; greenhouse gas budget; agricultural emissions; stable isotopes; Kyoto Protocol; Switzerland; Methane flux

Lay Summary (Englisch)

Lead
Lay summary
The release of the IPCC's Fourth Climate Assessment Report has once more drawn the public attention to the important role that agriculture plays in the global greenhouse gas budgets, namely in the case of CH4 and N2O. In Switzerland, 80.5% of all national CH4 emissions stem from the agricultural sector (year 2007 values). However, these numbers so far lack direct experimental validation in the field and are based on expert knowledge. We thus propose to investigate the CH4 emission processes leading to a clear increase in CH4 concentrations within the nocturnal atmospheric boundary layer. This project will thus aim at validating CH4 emissions at the farm scale as a first step towards a validation at the national scale.We hypothesize that the diurnal cycle in CH4 concentration is the combination of the local surface exchange of CH4 with oxidation by the soil if it is unsaturated or emissions from the soil if saturated, plus a much larger component attributable to emissions from cattle (ruminants).Our specific aim is to quantify CH4 emissions at the farm scale (0.5-5km2) of the ETH Research Station Chamau and relate this to estimates reported in the Swiss National Inventory Report under the Kyoto Protocol.We plan to employ a boundary-layer budgeting method (BLBM) by focusing on the nocturnal boundary layer conditions where steadily increasing CH4 concentrations can be observed during most of the nights. To achieve this, we need the following four components of our experiment:- Eddy covariance flux and concentration measurements to quantify the surface exchange of CH4 (soil production or consumption);- Vertical CH4 concentration profiles to know the vertical distribution of CH4 in the incompletely mixed stable nocturnal boundary layer (NBL), to determine the NBL height and its temporal evolution which are essential information required by the BLBM;- Spatial variation of near-surface CH4 concentrations to address the question how spatially representative our near-surface CH4 concentration measurements actually are.Measurements of stable isotopes, in particular d13C ratios in CH4 will provide additional information about the processes responsible for the CH4 fluxes obtained via the BLBM aproach.Our project will contribute to develop and test a potentially useful method for validating CH4 emissions at the farm scale and larger scales. This project will contribute to our scientific understanding by bridging the spatial and temporal gap in our efforts to quantify and validate CH4 emission estimates at the farm scale to regional scale.
Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

Verantw. Gesuchsteller/in und weitere Gesuchstellende

Mitarbeitende

Publikationen

Publikation
Validation of farm-scale methane emissions using nocturnal boundary layer budgets
Stieger Jacqueline, Bamberger Ines, Buchmann Nina, Eugster Werner (2015), Validation of farm-scale methane emissions using nocturnal boundary layer budgets, in Atmos. Chem. Phys., 15, 14055-14069.
Greenhouse gas budget (CO2, CH4 and N2O) of intensively managed grassland following restoration
Merbold L, Eugster W, Stieger J, Zahniser M, Nelson D, Buchmann N (2014), Greenhouse gas budget (CO2, CH4 and N2O) of intensively managed grassland following restoration, in Global Change Biology, 20, 1913-1928.
Spatial variability of methane: Attributing atmospheric concentrations to emissions
Bamberger I, Stieger J, Eugster W, Buchmann N (2014), Spatial variability of methane: Attributing atmospheric concentrations to emissions, in Environmental Pollution, 190, 65-74.
Contrasting response of grassland versus forest carbon and water fluxes to spring drought in Switzerland
Wolf Sebastian, Eugster Werner, Ammann Christof, Häni Matthias, Zielis Sebastian, Hiller Rebecca, Stieger Jacqueline, Imer Dennis, Merbold Lutz, Buchmann Nina (2013), Contrasting response of grassland versus forest carbon and water fluxes to spring drought in Switzerland, in Environmental Research Letters, 8, 035007.
Performance of a low-cost methane sensor for ambient concentration measurements in preliminary studies
Eugster Werner, Kling George W. (2012), Performance of a low-cost methane sensor for ambient concentration measurements in preliminary studies, in Atmospheric Measurement Techniques, 5, 1925-1934.
Methane emissions at farm and regional scales: origin, magnitude and spatio-temporal variability
Stieger Jacqueline V., Methane emissions at farm and regional scales: origin, magnitude and spatio-temporal variability, ETH Zurich, ETH Zurich.

Zusammenarbeit

Gruppe / Person Land
Formen der Zusammenarbeit
PSI Schweiz (Europa)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
- Forschungsinfrastrukturen
MetAir AG Schweiz (Europa)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
- Publikation
- Forschungsinfrastrukturen
- Industrie/Wirtschaft/weitere anwendungs-orientierte Zusammenarbeit

Wissenschaftliche Veranstaltungen

Aktiver Beitrag

Titel Art des Beitrags Titel des Artikels oder Beitrages Datum Ort Beteiligte Personen
GEIA 2012 Conference - Emissions to Address Science and Policy Needs Vortrag im Rahmen einer Tagung Active participation (this was a workshop) 11.06.2012 Toulouse, Frankreich Stieger Jacqueline;
Climate change in the Pyrenees: vulnerability, impacts, mitigation and adaptation Vortrag im Rahmen einer Tagung Mountains and climate change mitigation: managing ecosystems for carbon storage and conservation 05.06.2012 Barcelona, Spanien Eugster Werner;
ESF Exploratory Workshop on Towards A Global Synthesis Of Methane Fluxes From Land Ecosystems Vortrag im Rahmen einer Tagung State of the art of eddy covariance CH4 flux measurements 10.04.2012 Hamburg, Deutschland Eugster Werner;
TTorch summer school – Challenges in measurements of greenhouse gases and their interpretation Vortrag im Rahmen einer Tagung FasMeF - Measuring Farm-Scale Methane Fluxes 27.09.2011 Hyytiälä, Finnland, Finnland Stieger Jacqueline;


Veranstaltungen zum Wissenstransfer

Aktiver Beitrag

Titel Art des Beitrags Titel des Artikels oder Beitrages Datum Ort Beteiligte Personen
Empa Akademie, Tagung Klimarelevante Spurengase und Aerosole. Vortrag: Validierung von regionalen Methanemissionen in der Schweiz mit Flugzeug, Fesselballon und am Boden Vortrag 16.01.2015 Dübendorf, Schweiz
MethanausstossinderLandwirtschaftundanderswo. ETH Alumni GEP Baden Vortrag 10.09.2014 Baden, Schweiz


Kommunikation mit der Öffentlichkeit

Kommunikation Titel Medien Ort Jahr
Medienarbeit: Radio, Fernsehen Jungforscher auf Methan-Jagd Fernsehen SF: Schweiz Aktuell Westschweiz Deutschschweiz Italienische Schweiz Romanische Schweiz 2012
Medienarbeit: Printmedien, Online-Medien Ballon misst den Treibhaus-Effekt von Rindern ETH Life Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien ETH misst Methan mit Fesselballon Schweizer Bauer Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien ETH misst mit Ballon Methankonzentration BauernZeitung Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien Forscher nehmen Kühe unter die Lupe Die Südostschweiz / Ausgabe Graubünden Deutschschweiz Romanische Schweiz 2011
Medienarbeit: Printmedien, Online-Medien Fressen und Furzen St. Galler Tagblatt / Ausgabe St. Gallen+Gossau Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien Messung der Methanemissionen aus der landwirtschaft: Was das rindvieh zum treibhauseffekt beiträgt SNF Info Deutschschweiz 2011
Neue Medien (Web, Blogs, Podcasts, NewsFeed, usw.) Messung der Methanemissionen: Was das Rindvieh zum Treibhaus-Effekt beiträgt SNF Newsletter Deutschschweiz Westschweiz Romanische Schweiz Italienische Schweiz 2011
Neue Medien (Web, Blogs, Podcasts, NewsFeed, usw.) Methanaussstoss von Rindern soll genauer untersucht werden Schweizer Bauer Online Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien Methan-Ausstoss der Rinder wird erforscht Appenzeller Volksfreund Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien Methanausstoss von Rindern unter der Lupe Alttoggenburger / Toggenburger Volksblatt Deutschschweiz 2011
Neue Medien (Web, Blogs, Podcasts, NewsFeed, usw.) Neues Messverfahren zum Methangas-Ausstoß top agrar online International 2011
Weitere Aktivitäten SNF Bild der Forschung: Was das Rindvieh zum Treibhaus-Effekt beiträgt Deutschschweiz 2011
Medienarbeit: Printmedien, Online-Medien Was das Rindvieh zum Treibhaus-Effekt beiträgt SNF Bild der Forschung Romanische Schweiz Westschweiz Deutschschweiz Italienische Schweiz 2011

Verbundene Projekte

Nummer Titel Start Förderungsinstrument
136273 CarboCount CH: Quantifying greenhouse gas fluxes and their sensitivity to climate variations: A case study in Central Europe and Switzerland 01.01.2012 Sinergia

Abstract

1. Relevance:The release of the IPCC’s Fourth Climate Assessment Report has once more drawn the public attention to the important role that agriculture plays in the global greenhouse gas budgets, namely in the case of CH4 and N2O. In Switzerland, 80.5% of all national CH4 emissions stem from the agricultural sector (year 2007 values). However, these numbers so far lack direct experimental validation in the field and are based on expert knowledge. We thus propose to investigate the CH4 emission processes leading to a clear increase in CH4 concentrations within the nocturnal atmospheric boundary layer. The proposed project will thus aim at validating CH4 emissions at the farm scale as a first step towards a validation at the national scale. 2. Working Hypotheses:We hypothesize that the diurnal cycle in CH4 concentration is the combination of the local surface exchange of CH4 (measured by eddy covariance) with oxidation by the soil if it is unsaturated or emissions from the soil if saturated, plus a much larger component attributable to emissions from cattle (ruminants). 3. Specific Aim:Our specific aim is to quantify CH4 emissions at the farm scale (0.5- 5 km2) of the ETH Research Station Chamau and relate this to estimates reported in the Swiss National Inventory Report under the Kyoto Protocol.4. Experimental Design and Methods:We plan to employ a boundary-layer budgeting method (BLBM; Section 2.4.5) by focusing on the nocturnal boundary layer conditions where steadily increasing CH4 concentrations can be observed during most of the nights. To achieve this, we need the following four components of our experiment: A. Eddy covariance flux and concentration measurements to quantify the surface exchange of CH4 (soil production or consumption) (Section 2.4.1) B. Vertical CH4 concentration profiles to know the vertical distribution of CH4 in the incompletely mixed stable nocturnal boundary layer (NBL), to determine the NBL height and its temporal evolution which are essential information required by the BLBM (Section 2.4.2) C. Spatial variation of near-surface CH4 concentrations to address the question how spatially representative our near-surface CH4 concentration measurements actually are; for this we plan the use of a car to move a CH4 analyser along transects during daytime and nighttime, and a small aircraft to probe the lowest 50-3000 m during daytime (Section 2.4.3) D. Measurements of stable isotopes, in particular d13C ratios in CH4 will provide additional information about the processes responsible for the CH4 fluxes obtained via the BLBM aproach (Section 2.4.4) 5. Expected Value of the Proposed Project:Our project will contribute to develop and test a potentially useful method for validating CH4 emissions at the farm scale and larger scales. This project will contribute to our scientific understanding by bridging the spatial and temporal gap in our efforts to quantify and validate CH4 emission estimates at the farm scale to regional scale. And this project is expected to provide an essential basis for the developments of the European Integrative Carbon Observation System (ICOS).
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