{
  "abstract": "This study presents a comprehensive assessment of aerosol hygroscopicity during the HYGRO19 field campaign conducted at the MeteoSwiss station in Payerne (Switzerland) from June to December 2019. Continuous profiles of aerosol backscatter, water vapour mixing ratio, and temperature provided by the Raman Lidar for Meteorological Observations (RALMO) during both daytime and nighttime allowed aerosol hygroscopic growth to be investigated temporally and vertically under different atmospheric conditions. The campaign also provided a unique experimental framework by combining continuous Raman lidar observations with vertically resolved in situ measurements from the balloon-borne Compact Backscatter Aerosol Detector coupled with Vaisala RS41 radiosondes (COBALD-RS41), ground-based tandem nephelometers, and complementary surface aerosol chemical analyses, enabling aerosol hygroscopicity to be evaluated using three complementary approaches. Two contrasting aerosol regimes were observed: a summer period characterised by relatively high aerosol loading and frequent influence from long-range transported particles, and a second period dominated by low-pressure systems, persistent cloudiness, and reduced aerosol concentrations. Through these different atmospheric conditions, more than 200 well-mixed hygroscopic aerosol layers were identified with RALMO, with median hygroscopicity parameters of f β (355 nm) =2.64±0.64 and γ β (355 nm) =0.70±0.18. Statistical analyses revealed no systematic dependence of aerosol hygroscopicity on altitude, with comparable values in the atmospheric boundary layer and free troposphere. Multi-instrument comparisons showed generally consistent hygroscopic behaviour among RALMO, COBALD-RS41, and tandem nephelometer observations in the analysed cases, despite differences between the techniques. Surface chemical analyses showed a predominance of organic matter, with inorganic species accounting for approximately 11 % of the aerosol mass. No clear dependence of aerosol hygroscopicity on particle size was identified. These results show that continuous Raman lidar observations, complemented by vertically resolved and ground-based in situ measurements, provide a robust framework for characterising aerosol hygroscopicity under ambient atmospheric conditions.",
  "abstract_shown": true,
  "affiliations": [
    "Universidad de Granada (Granada, Spain)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 16,
  "authors": [
    {
      "name": "Arlett Díaz-Zurita",
      "orcid": "0000-0002-8982-7527"
    },
    {
      "name": "Simone Brunamonti",
      "orcid": "0000-0001-7667-443X"
    },
    {
      "name": "Alexander Haefele",
      "orcid": "0000-0002-3912-5316"
    },
    {
      "name": "Martine Collaud Coen",
      "orcid": "0000-0001-6482-2941"
    },
    {
      "name": "Giovanni Martucci"
    },
    {
      "name": "Benjamin Tobias Brem",
      "orcid": "0000-0001-6211-2815"
    },
    {
      "name": "Martin Gysel-Beer",
      "orcid": "0000-0002-7453-1264"
    },
    {
      "name": "Hassan Lyamani"
    },
    {
      "name": "Gloria Titos",
      "orcid": "0000-0003-3630-5079"
    },
    {
      "name": "Daniel Pérez-Ramírez",
      "orcid": "0000-0002-7679-6135"
    },
    {
      "name": "Christoph Hüglin",
      "orcid": "0000-0002-6973-522X"
    },
    {
      "name": "Lucas Alados-Arboledas",
      "orcid": "0000-0003-3576-7167"
    },
    {
      "name": "Alejandro Keller",
      "orcid": "0000-0002-6880-043X"
    },
    {
      "name": "Frank Gunther Wienhold"
    },
    {
      "name": "Maxime Hervo",
      "orcid": "0000-0003-3614-1297"
    },
    {
      "affs": [
        0
      ],
      "name": "Francisco Navas-Guzmán",
      "orcid": "0000-0002-0905-4385"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2n4zj2g037sff.bib",
  "cited_by": 0,
  "doi": "10.5194/acp-26-15653-2026",
  "fulltext_url": null,
  "id": "2n4zj2g037sff",
  "issns": [
    "1680-7324"
  ],
  "landing_url": "https://doi.org/10.5194/acp-26-15653-2026",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "earth/atmospheric"
    ]
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  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-09",
  "publisher": "Copernicus GmbH",
  "ris": "https://research.draconitic.com/paper/2n4zj2g037sff.ris",
  "sources": [
    {
      "first_seen": "2026-11-09T06:20:04Z",
      "native_id": "10.5194/acp-26-15653-2026",
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  "subjects": [
    {
      "field": "earth",
      "origin": "feed-journal:earth/atmospheric",
      "subfield": "atmospheric"
    }
  ],
  "title": "Characterisation of hygroscopic aerosol processes using remote sensing and in situ techniques at the MeteoSwiss Payerne station",
  "title_text": "Characterisation of hygroscopic aerosol processes using remote sensing and in situ techniques at the MeteoSwiss Payerne station",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T18:20:14Z",
  "url": "https://research.draconitic.com/paper/2n4zj2g037sff",
  "venue": "Atmospheric Chemistry and Physics",
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      "doi": "10.5194/egusphere-2026-4361",
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}