December 18, 2018 Journal article Open Access

Wex, Heike; Huang, Lin; Zhang, Wendy; Hung, Hayley; Traversi, Rita; Becagli, Silvia; Sheesley, Rebecca J.; Moffett, Claire E.; Barrett, Tate E.; Bossi, Rossana; Skov, Henrik; Hünerbein, Anja; Lubitz, Jasmin; Löffler, Mareike; Linke, Olivia; Hartmann, Markus; Herenz, Paul; Stratmann, Frank

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    "creators": [
      {
        "name": "Wex, Heike"
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      {
        "name": "Huang, Lin"
      }, 
      {
        "name": "Zhang, Wendy"
      }, 
      {
        "name": "Hung, Hayley"
      }, 
      {
        "name": "Traversi, Rita"
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      {
        "name": "Becagli, Silvia"
      }, 
      {
        "name": "Sheesley, Rebecca J."
      }, 
      {
        "name": "Moffett, Claire E."
      }, 
      {
        "name": "Barrett, Tate E."
      }, 
      {
        "name": "Bossi, Rossana"
      }, 
      {
        "name": "Skov, Henrik"
      }, 
      {
        "name": "H\u00fcnerbein, Anja"
      }, 
      {
        "name": "Lubitz, Jasmin"
      }, 
      {
        "name": "L\u00f6ffler, Mareike"
      }, 
      {
        "name": "Linke, Olivia"
      }, 
      {
        "name": "Hartmann, Markus"
      }, 
      {
        "name": "Herenz, Paul"
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      {
        "name": "Stratmann, Frank"
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    "description": "Abstract. Number\nconcentrations of ice-nucleating particles (NINP) in the Arctic\nwere derived from ground-based filter samples. Examined samples had been\ncollected in Alert (Nunavut, northern Canadian archipelago on Ellesmere\nIsland), Utqia\u0121vik, formerly known as Barrow (Alaska), Ny-\u00c5lesund\n(Svalbard), and at the Villum Research Station (VRS; northern Greenland). For\nthe former two stations, examined filters span a full yearly cycle. For VRS,\n10 weekly samples, mostly from different months of one year, were included.\nSamples from Ny-\u00c5lesund were collected during the months from March until\nSeptember of one year. At all four stations, highest concentrations were\nfound in the summer months from roughly June to September. For those stations\nwith sufficient data coverage, an annual cycle can be seen. The spectra of\nNINP observed at the highest temperatures, i.e., those obtained\nfor summer months, showed the presence of INPs that nucleate ice up to\n\u22125\u2009\u2218C. Although the nature of these highly ice-active INPs could\nnot be determined in this study, it often has been described in the\nliterature that ice activity observed at such high temperatures originates\nfrom the presence of ice-active material of biogenic origin. Spectra observed\nat the lowest temperatures, i.e., those derived for winter months, were on\nthe lower end of the respective values from the literature on Arctic INPs or\nINPs from midlatitude continental sites, to which a comparison is presented\nherein. An analysis concerning the origin of INPs that were ice active at\nhigh temperatures was carried out using back trajectories and satellite\ninformation. Both terrestrial locations in the Arctic and the adjacent sea\nwere found to be possible source areas for highly active INPs.", 
    "doi": "10.5194/acp-19-5293-2019", 
    "keywords": [
      "Atmospheric Science"
    ], 
    "language": "eng", 
    "license": {
      "id": "CC-BY-4.0"
    }, 
    "notes": "", 
    "publication_date": "2018-12-18", 
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    "resource_type": {
      "subtype": "article", 
      "title": "Journal article", 
      "type": "publication"
    }, 
    "title": "Annual variability of ice-nucleating particle concentrations at different Arctic locations"
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