Physically based inversion of surface snow concentrations of H₂O₂ to atmospheric concentrations at South Pole

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dc.contributor.authorMcConnell, Joseph R.
dc.contributor.authorWinterle, James R.
dc.contributor.authorBales, Roger C.
dc.contributor.authorThompson, Anne M.
dc.contributor.authorStewart, Richard W.
dc.date.accessioned2024-07-26T16:34:02Z
dc.date.available2024-07-26T16:34:02Z
dc.date.issued1997-02-15
dc.description.abstractInversion of chemical records archived in ice cores to atmospheric concentrations requires a detailed understanding of atmosphere-to-snow-to-ice transfer processes. A unique year-round series of surface snow samples, collected from November, 1994 through January, 1996 at South Pole and analyzed for H₂O₂, were used to test a physically based model for the atmosphere-to-snow component of the overall transfer function. A comparison of photochemical model estimates of atmospheric H₂O₂, which are in general agreement with the first measurements of atmospheric H₂O₂ at South Pole, with the inverted atmospheric record (1) demonstrate that the surface snow acts as an excellent archive of atmospheric H₂O₂ and (2) suggest that snow temperature is the dominant factor determining atmosphere-to-surface snow transfer at South Pole. The estimated annual cycle in atmospheric H₂O₂ concentration is approximately symmetric about the summer solstice, with a peak value of ∼280 pptv and a minimum around the winter solstice of ∼1 pptv, although some asymmetry results from the springtime stratospheric ozone hole over Antarctica.
dc.description.sponsorshipThis work was supportedbya NASA Graduate Fellowship for Global Change and inpart by National ScienceFoundation'sOfficeof Polar Pro-gram. Atmosphericphotochemicalmodelingat NASA wassupportedby the GoddardDirector'sDiscretionaryFund.Field work at South Pole was conducted under a cooper-ative agreementwith the NOAA Climate MonitoringandDiagnosticsLaboratory.We very muchappreciatethe helpof K. McNitt and R. Ramosof NOAA/CMDL for their helpin collectingsamplesat SouthPolethroughoutthe yearandS. Oltmans and P. Novelli for access to the surface ozoneand carbon monoxide data respectively.
dc.description.urihttps://onlinelibrary.wiley.com/doi/abs/10.1029/97GL00183
dc.format.extent4 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m28ftb-aaoh
dc.identifier.citationMcConnell, Joseph R., James R. Winterle, Roger C. Bales, Anne M. Thompson, and Richard W. Stewart. “Physically Based Inversion of Surface Snow Concentrations of H₂O₂ to Atmospheric Concentrations at South Pole.” Geophysical Research Letters 24, no. 4 (1997): 441–44. https://doi.org/10.1029/97GL00183.
dc.identifier.urihttps://doi.org/10.1029/97GL00183
dc.identifier.urihttp://hdl.handle.net/11603/34910
dc.language.isoen_US
dc.publisherAGU
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.titlePhysically based inversion of surface snow concentrations of H₂O₂ to atmospheric concentrations at South Pole
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920

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