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Sensitivity of hydrogen peroxide (H2O2) and formaldehyde (HCHO) preservation in snow to changing environmental conditions: Implications for ice core records

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dc.contributor.authorHutterli, Manuel
dc.contributor.authorMcConnell, Joseph R.
dc.contributor.authorBales, Roger C.
dc.contributor.authorStewart, Richard W.
dc.date.accessioned2024-09-02T17:44:00Z
dc.date.available2024-09-02T17:44:00Z
dc.date.issued2003
dc.description.abstractSensitivity studies with physically based numerical air–snow–firn transfer models for formaldehyde (HCHO) and hydrogen peroxide (H2O2) show that even though nonlinear processes determine the preservation of HCHO and H2O2 in snow and firn, changes in atmospheric mixing ratios are linearly recorded in ice cores under otherwise constant environmental conditions. However, temperature, snowpack ventilation, and rate and timing of snow accumulation also affect the ice core records of reversibly deposited species and must be considered when inferring past atmospheric mixing ratios. The results of the sensitivity studies allow quantitative separation of these factors in ice core records. Past temperatures and accumulation rates are generally determined in ice cores and the preservation of HCHO and H2O2 is not highly sensitive to snowpack ventilation, leaving changes in seasonality of snow accumulation as the main source of uncertainty in a reconstruction of past atmospheric mixing ratios.
dc.description.numberOfPages9
dc.description.sponsorshipPhysikalisches Institut, Klima- und Umweltphysik (KUP)
dc.identifier.doi10.48350/158293
dc.identifier.publisherDOI10.1029/2002JD002528
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/43042
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.relation.ispartofJournal of Geophysical Research: Atmospheres
dc.relation.issn2169-897X
dc.relation.organizationDCD5A442BF29E17DE0405C82790C4DE2
dc.subject.ddc500 - Science::530 - Physics
dc.titleSensitivity of hydrogen peroxide (H2O2) and formaldehyde (HCHO) preservation in snow to changing environmental conditions: Implications for ice core records
dc.typearticle
dspace.entity.typePublication
oaire.citation.endPage6.9
oaire.citation.issueD1
oaire.citation.startPage6.1
oaire.citation.volume108
oairecerif.author.affiliationPhysikalisches Institut, Klima- und Umweltphysik (KUP)
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unibe.date.licenseChanged2021-08-19 11:54:37
unibe.description.ispublishedpub
unibe.eprints.legacyId158293
unibe.refereedTRUE
unibe.subtype.articlejournal

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