Evidence of a natural marine source of oxalic acid and a possible link toglyoxal (Articolo in rivista)

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  • Evidence of a natural marine source of oxalic acid and a possible link toglyoxal (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2011JD015659 (literal)
Alternative label
  • Rinaldi, M., Decesari, S., Carbone, C., Finessi, E., Fuzzi, S., Ceburnis, D., O'Dowd, CD., Sciare, J., Burrows, JP., Vrekoussis, M., Ervens, B., Tsigaridis, K., Facchini, MC. (2011)
    Evidence of a natural marine source of oxalic acid and a possible link toglyoxal
    in Journal of Geophysical Research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rinaldi, M., Decesari, S., Carbone, C., Finessi, E., Fuzzi, S., Ceburnis, D., O'Dowd, CD., Sciare, J., Burrows, JP., Vrekoussis, M., Ervens, B., Tsigaridis, K., Facchini, MC. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 116 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • D1624 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Inst Atmospher Sci & Climate, I-40126 Bologna, Italy Natl Univ Ireland Galway, Sch Expt Phys, Galway, Ireland Natl Univ Ireland Galway, Environm Change Inst, Galway, Ireland CNRS CEA IPSL, Lab Sci Climat & Environm, Gif Sur Yvette, France Univ Bremen, Inst Environm Phys & Remote Sensing, D-28334 Bremen, Germany Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA NOAA, Div Chem Sci, Earth Syst Res Lab, Boulder, CO USA Columbia Univ, Ctr Climate Syst Res, New York, NY USA NASA, Goddard Inst Space Studies, New York, NY 10025 USA (literal)
Titolo
  • Evidence of a natural marine source of oxalic acid and a possible link toglyoxal (literal)
Abstract
  • This paper presents results supporting the existence of a natural source of oxalic acid over the oceans. Oxalate was detected in \"clean-sector\" marine aerosol samples at Mace Head (Ireland) (53 degrees 20'N, 9 degrees 54'W) during 2006, and at Amsterdam Island (37 degrees 48'S, 77 degrees 34'E) from 2003 to 2007, in concentrations ranging from 2.7 to 39 ng m(-3) and from 0.31 to 17 ng m(-3), respectively. The oxalate concentration showed a clear seasonal trend at both sites, with maxima in spring-summer and minima in fall-winter, being consistent with other marine biogenic aerosol components (e.g., methanesulfonic acid, non-sea-salt sulfate, and aliphatic amines). The observed oxalate was distributed along the whole aerosol size spectrum, with both a submicrometer and a supermicrometer mode, unlike the dominant submicrometer mode encountered in many polluted environments. Given its mass size distribution, the results suggest that over remote oceanic regions oxalate is produced through a combination of different formation processes. It is proposed that the cloud-mediated oxidation of gaseous glyoxal, recently detected over remote oceanic regions, may be an important source of submicrometer oxalate in the marine boundary layer. Supporting this hypothesis, satellite-retrieved glyoxal column concentrations over the two sampling sites exhibited the same seasonal concentration trend of oxalate. Furthermore, chemical box model simulations showed that the observed submicrometer oxalate concentrations were consistent with the in-cloud oxidation of typical marine air glyoxal mixing ratios, as retrieved by satellite measurements, at both sites. Evidence of a natural marine source of oxalic acid and a possiblelink toglyoxal JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 2011 116, D16204, 10.1029/2011JD015659 (literal)
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