{
  "annotation_id": "fafcf2dc-3188-452b-a1ed-f35141e76560",
  "date_created": "2026-03-02T18:01:18.017000Z",
  "date_modified": "2026-03-02T18:01:18.017000Z",
  "file_hash": "abb3e6a2dd1bd1938b86bbf9a50242fa4ea6f94941f65feb759c5900856f70f0",
  "private": false,
  "record": {
    "abstract": "Geomagnetic activity has two main peaks in the 11-year sunspot cycle caused\nby two types of solar agents: coronal mass ejections and high speed solar wind\nstreams, whose variations in number and intensity are related to the variations\nin solar toroidal and poloidal fields, respectively. From the long-term\nvariations in the lag between the two aa-index peaks we derive the long-term\nvariations in solar meridional circulation. We use these relations to test the\nflux-transport solar dynamo theory and to explain some well known\ncharacteristics of the solar cycle. Based on these relations, we give a\nprediction for the amplitude (125) and epoch of the maximum (April 2011) of\nsunspot cycle 24.",
    "arxiv_id": "physics/0703187",
    "authors": [
      "K. Georgieva",
      "B. Kirov"
    ],
    "categories": [
      "physics.space-ph"
    ],
    "title": "Long-term variations in solar meridional circulation from geomagnetic   data: implications for solar dynamo theory",
    "url": "https://arxiv.org/abs/physics/0703187"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ac6a9c89-f1f8-4602-a5ee-3e1d8beefb7b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}