Publication:
Continuous CO2/CH4/CO measurements (2012–2014) at Beromünster tall tower station in Switzerland

cris.virtual.author-orcid0000-0003-4299-6793
cris.virtualsource.author-orcid58dc7083-8fc9-4366-a704-2c0511e0533e
cris.virtualsource.author-orcid5ac4242c-d92e-4fba-9251-56cf95616a19
cris.virtualsource.author-orcidfeb2f13c-3ddd-414c-88f2-b13b839544a4
dc.contributor.authorSatar, Ece
dc.contributor.authorBerhanu, Tesfaye
dc.contributor.authorBrunner, Dominik
dc.contributor.authorHenne, Stephan
dc.contributor.authorLeuenberger-Lüthy, Markus Christian
dc.date.accessioned2024-10-24T17:32:56Z
dc.date.available2024-10-24T17:32:56Z
dc.date.issued2016
dc.description.abstractThe understanding of the continental carbon budget is essential to predict future climate change. In order to quantify CO₂ and CH₄ fluxes at the regional scale, a measurement system was installed at the former radio tower in Beromünster as part of the Swiss greenhouse gas monitoring network (CarboCount CH). We have been measuring the mixing ratios of CO₂, CH₄ and CO on this tower with sample inlets at 12.5, 44.6, 71.5, 131.6 and 212.5 m above ground level using a cavity ring down spectroscopy (CRDS) analyzer. The first 2-year (December 2012–December 2014) continuous atmospheric record was analyzed for seasonal and diurnal variations and interspecies correlations. In addition, storage fluxes were calculated from the hourly profiles along the tower. The atmospheric growth rates from 2013 to 2014 determined from this 2-year data set were 1.78 ppm yr⁻¹, 9.66 ppb yr⁻¹ and and -1.27 ppb yr⁻¹ for CO₂, CH₄ and CO, respectively. After detrending, clear seasonal cycles were detected for CO₂ and CO, whereas CH₄ showed a stable baseline suggesting a net balance between sources and sinks over the course of the year. CO and CO₂ were strongly correlated (r² > 0.75) in winter (DJF), but almost uncorrelated in summer. In winter, anthropogenic emissions dominate the biospheric CO₂ fluxes and the variations in mixing ratios are large due to reduced vertical mixing. The diurnal variations of all species showed distinct cycles in spring and summer, with the lowest sampling level showing the most pronounced diurnal amplitudes. The storage flux estimates exhibited reasonable diurnal shapes for CO₂, but underestimated the strength of the surface sinks during daytime. This seems plausible, keeping in mind that we were only able to calculate the storage fluxes along the profile of the tower but not the flux into or out of this profile, since no Eddy covariance flux measurements were taken at the top of the tower.
dc.description.numberOfPages13
dc.description.sponsorshipPhysikalisches Institut, Klima- und Umweltphysik (KUP)
dc.identifier.doi10.7892/boris.83824
dc.identifier.publisherDOI10.5194/bg-13-2623-2016
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/142705
dc.language.isoen
dc.publisherEuropean Geosciences Union
dc.relation.ispartofBiogeosciences
dc.relation.issn1726-4189
dc.relation.organizationDCD5A442C08FE17DE0405C82790C4DE2
dc.relation.organizationDCD5A442BF29E17DE0405C82790C4DE2
dc.relation.schoolDCD5A442C6A1E17DE0405C82790C4DE2
dc.subject.ddc500 - Science::530 - Physics
dc.subject.ddc500 - Science::550 - Earth sciences & geology
dc.titleContinuous CO2/CH4/CO measurements (2012–2014) at Beromünster tall tower station in Switzerland
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.endPage2635
oaire.citation.issue9
oaire.citation.startPage2623
oaire.citation.volume13
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
oairecerif.author.affiliation2Oeschger Centre for Climate Change Research (OCCR)
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.description.ispublishedpub
unibe.eprints.legacyId83824
unibe.journal.abbrevTitleBiogeosciences
unibe.refereedTRUE
unibe.subtype.articlejournal

Files

Original bundle
Now showing 1 - 1 of 1
Name:
satar16bg.pdf
Size:
710.15 KB
Format:
Adobe Portable Document Format
File Type:
text
License:
https://creativecommons.org/licenses/by/4.0
Content:
published

Collections