{
  "annotation_id": "f0c23f69-271d-4997-8712-ac18a0903acf",
  "date_created": "2026-03-02T18:00:56.885000Z",
  "date_modified": "2026-03-02T18:00:56.885000Z",
  "file_hash": "2cd447356b8e8d9aa4b6448d0e4b67f6d801e0569510ab1776425fed241a5c7d",
  "private": false,
  "record": {
    "abstract": "Detailed tropospheric ion measurements are needed to improve understanding of\nthe electrical microphysics affecting clouds. Additionally, atmospheric ion\nmobility spectra can be used to identify ion growth processes leading to\ncondensation nucleus formation. However these measurements are rare,\nparticularly in the troposphere where the majority of clouds form. Developments\nin the operating theory of the classical instrument for ion measurement, the\naspirated cylindrical capacitor, are described, which enable ion mobility\nspectrum information to be extracted from the rate of voltage decay of the\naspirated capacitor in air. In this paper, data from historical balloon-borne\nion counter ascents will be reanalysed to extract new ion mobility spectra from\nsimple voltage time series. Such data recovery will increase the amount of\natmospheric ion spectra available for analysis.",
    "arxiv_id": "physics/0501129",
    "authors": [
      "K. L. Aplin"
    ],
    "categories": [
      "physics.ao-ph",
      "physics.geo-ph"
    ],
    "title": "A novel technique to determine atmospheric ion mobility spectra",
    "url": "https://arxiv.org/abs/physics/0501129"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "795593a1-d484-470d-b102-1aef3c7d6406",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}