January 1, 1999 Journal article Open Access

Giovanni Piccardi; S. Vermigli; Emiliano Castellano; Roberto Udisti; Silvia Becagli; Rita Traversi

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Giovanni Piccardi</dc:creator>
  <dc:creator>S. Vermigli</dc:creator>
  <dc:creator>Emiliano Castellano</dc:creator>
  <dc:creator>Roberto Udisti</dc:creator>
  <dc:creator>Silvia Becagli</dc:creator>
  <dc:creator>Rita Traversi</dc:creator>
  <dc:date>1999-01-01</dc:date>
  <dc:description>AbstractPrimary and secondary marine aerosol contributions to snow composition in Terra Nova Bay Antarctica, were evaluated by chemical analysis of surface and snow-pit samples. A seasonal pattern of marine inputs, very clear for secondary aerosol (mainly constituted by nssSO4- and methanesulphonic acid (MSA) coming from phytoplanktonic activity) and less evident for sea spray (Na+, CF, Mg2+) was shown by snow-pit samples. Altitude and distance from the coast were found to be the main parameters affecting seasonal change in the composition of snow collected within about a 200 km radius of the Terra Nova Bay Italian base. Using Na+ as a sea-spray indicator and MSA as a biogenic marker, fractionating aerosol effects (which are altitude-induced) as well as source contributions for Cl- and nssSO42- were found. A nssSO42- /MSA ratio of 2.7 (w/w), indicating their distribution from the common source dimethylsulphide, was calculated from Analysis of fresh summer snow collected in horizontal and vertical transects in northern Victoria Land.</dc:description>
  <dc:identifier>https://www.openaccessrepository.it/record/121975</dc:identifier>
  <dc:identifier>10.3189/172756499781820923</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>url:https://www.openaccessrepository.it/communities/itmirror</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:subject>NEANIAS Atmospheric Research Community</dc:subject>
  <dc:subject>Earth-Surface Processes</dc:subject>
  <dc:title>Sea-spray and marine biogenic seasonal contribution to snow composition at Terra Nova Bay, Antarctica</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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